diff --git a/apex/Android.bp b/apex/Android.bp
index f62f930..f6820d1 100644
--- a/apex/Android.bp
+++ b/apex/Android.bp
@@ -28,7 +28,10 @@
     ],
     multilib: {
         both: {
-            binaries: ["linker"],
+            binaries: [
+                "crash_dump",
+                "linker",
+            ],
         },
     },
     key: "com.android.runtime.key",
diff --git a/libc/Android.bp b/libc/Android.bp
index 2b1c7ca..7fcd2ec 100644
--- a/libc/Android.bp
+++ b/libc/Android.bp
@@ -777,6 +777,7 @@
         "bionic/android_set_abort_message.cpp",
 
         "bionic/strchr.cpp",
+        "bionic/strchrnul.cpp",
         "bionic/strnlen.c",
         "bionic/strrchr.cpp",
     ],
@@ -837,25 +838,17 @@
         },
         arm64: {
             srcs: [
-                "arch-arm64/generic/bionic/memcmp.S",
                 "arch-arm64/generic/bionic/memcpy.S",
                 "arch-arm64/generic/bionic/memmove.S",
                 "arch-arm64/generic/bionic/memset.S",
-                "arch-arm64/generic/bionic/stpcpy.S",
-                "arch-arm64/generic/bionic/strcpy.S",
                 "arch-arm64/generic/bionic/wmemmove.S",
 
-                "arch-arm64/default/bionic/memchr.S",
-                "arch-arm64/default/bionic/strchr.S",
-                "arch-arm64/default/bionic/strcmp.S",
-                "arch-arm64/default/bionic/strlen.S",
-                "arch-arm64/default/bionic/strncmp.S",
-                "arch-arm64/default/bionic/strnlen.S",
-
                 "arch-arm64/mte/bionic/memchr.c",
-                "arch-arm64/mte/bionic/strchr.cpp",
+                "arch-arm64/mte/bionic/stpcpy.S",
+                "arch-arm64/mte/bionic/strchrnul.cpp",
+                "arch-arm64/mte/bionic/strrchr.cpp",
                 "arch-arm64/mte/bionic/strcmp.c",
-                "arch-arm64/mte/bionic/strlen.c",
+                "arch-arm64/mte/bionic/strcpy.S",
                 "arch-arm64/mte/bionic/strncmp.c",
                 "arch-arm64/mte/bionic/strnlen.c",
 
@@ -868,7 +861,9 @@
             exclude_srcs: [
                 "bionic/__memcpy_chk.cpp",
                 "bionic/strchr.cpp",
+                "bionic/strchrnul.cpp",
                 "bionic/strnlen.c",
+                "bionic/strrchr.cpp",
             ],
         },
 
@@ -1121,7 +1116,6 @@
         "bionic/spawn.cpp",
         "bionic/stat.cpp",
         "bionic/stdlib_l.cpp",
-        "bionic/strchrnul.cpp",
         "bionic/strerror.cpp",
         "bionic/string_l.cpp",
         "bionic/strings_l.cpp",
@@ -1358,6 +1352,7 @@
 
     whole_static_libs: [
         "gwp_asan",
+        "libarm-optimized-routines-string",
         "libc_bionic_ndk",
         "libc_bootstrap",
         "libc_fortify",
@@ -1388,6 +1383,7 @@
     name: "libc_nopthread",
 
     whole_static_libs: [
+        "libarm-optimized-routines-string",
         "libc_bionic",
         "libc_bionic_ndk",
         "libc_bootstrap",
@@ -1643,6 +1639,8 @@
                 srcs: [":libc_sources_shared_arm"],
                 // special for arm
                 cflags: ["-DCRT_LEGACY_WORKAROUND"],
+
+                whole_static_libs: [ "libunwind_llvm" ],
             },
 
             // Arm 32 bit does not produce complete exidx unwind information
@@ -1652,8 +1650,6 @@
             strip: {
                 keep_symbols_and_debug_frame: true,
             },
-
-            whole_static_libs: [ "libunwind_llvm" ],
         },
         arm64: {
             version_script: ":libc.arm64.map",
@@ -1664,7 +1660,9 @@
                 keep_symbols: true,
             },
 
-            whole_static_libs: [ "libgcc_stripped" ],
+            shared: {
+                whole_static_libs: [ "libgcc_stripped" ],
+            },
         },
         x86: {
             // TODO: This is to work around b/24465209. Remove after root cause is fixed.
@@ -1679,7 +1677,9 @@
                 keep_symbols: true,
             },
 
-            whole_static_libs: [ "libgcc_stripped" ],
+            shared: {
+                whole_static_libs: [ "libgcc_stripped" ],
+            },
         },
         x86_64: {
             version_script: ":libc.x86_64.map",
@@ -1690,7 +1690,9 @@
                 keep_symbols: true,
             },
 
-            whole_static_libs: [ "libgcc_stripped" ],
+            shared: {
+                whole_static_libs: [ "libgcc_stripped" ],
+            },
         },
     },
 
@@ -1756,6 +1758,7 @@
         "//external/perfetto:__subpackages__",
         "//external/scudo:__subpackages__",
         "//system/core/debuggerd:__subpackages__",
+        "//system/core/libunwindstack:__subpackages__",
         "//system/memory/libmemunreachable:__subpackages__",
     ],
     host_supported: true,
@@ -1780,6 +1783,18 @@
     ramdisk_available: true,
     recovery_available: true,
     native_bridge_supported: true,
+    apex_available: [
+        "//apex_available:platform",
+        "//apex_available:anyapex",
+    ],
+    visibility: [
+        ":__subpackages__", // visible to bionic
+        // ... and only to these places (b/152668052)
+        "//external/gwp_asan",
+        "//external/libunwind_llvm",
+        "//system/core/property_service/libpropertyinfoparser",
+        "//system/extras/toolchain-extras",
+    ],
 
     no_libcrt: true,
     stl: "none",
@@ -1911,6 +1926,10 @@
     ramdisk_available: true,
     recovery_available: true,
     native_bridge_supported: true,
+    apex_available: [
+        "//apex_available:platform",
+        "//apex_available:anyapex",
+    ],
 
     cflags: [
         "-Wno-gcc-compat",
diff --git a/libc/NOTICE b/libc/NOTICE
index 8245ff8..8582054 100644
--- a/libc/NOTICE
+++ b/libc/NOTICE
@@ -1,32 +1,3 @@
-   Copyright (c) 2014, ARM Limited
-   All rights Reserved.
-   Copyright (c) 2014, Linaro Ltd.
-
-   Redistribution and use in source and binary forms, with or without
-   modification, are permitted provided that the following conditions are met:
-       * Redistributions of source code must retain the above copyright
-         notice, this list of conditions and the following disclaimer.
-       * Redistributions in binary form must reproduce the above copyright
-         notice, this list of conditions and the following disclaimer in the
-         documentation and/or other materials provided with the distribution.
-       * Neither the name of the company nor the names of its contributors
-         may be used to endorse or promote products derived from this
-         software without specific prior written permission.
-
-   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-   HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
--------------------------------------------------------------------
-
    Copyright (c) 2014, Linaro Limited
    All rights reserved.
 
@@ -5225,34 +5196,6 @@
 
 -------------------------------------------------------------------
 
-Copyright (c) 2012, Linaro Limited
-   All rights reserved.
-
-   Redistribution and use in source and binary forms, with or without
-   modification, are permitted provided that the following conditions are met:
-       * Redistributions of source code must retain the above copyright
-         notice, this list of conditions and the following disclaimer.
-       * Redistributions in binary form must reproduce the above copyright
-         notice, this list of conditions and the following disclaimer in the
-         documentation and/or other materials provided with the distribution.
-       * Neither the name of the Linaro nor the
-         names of its contributors may be used to endorse or promote products
-         derived from this software without specific prior written permission.
-
-   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-   HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
--------------------------------------------------------------------
-
 Copyright (c) 2012-2013, Linaro Limited
    All rights reserved.
 
@@ -5465,33 +5408,6 @@
 
 -------------------------------------------------------------------
 
-Copyright (c) 2013-2015, Linaro Limited
-   All rights reserved.
-
-   Redistribution and use in source and binary forms, with or without
-   modification, are permitted provided that the following conditions are met:
-       * Redistributions of source code must retain the above copyright
-     notice, this list of conditions and the following disclaimer.
-       * Redistributions in binary form must reproduce the above copyright
-     notice, this list of conditions and the following disclaimer in the
-     documentation and/or other materials provided with the distribution.
-       * Neither the name of the Linaro nor the
-     names of its contributors may be used to endorse or promote products
-     derived from this software without specific prior written permission.
-
-   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-   HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-
--------------------------------------------------------------------
-
 Copyright (c) 2014, Intel Corporation
 All rights reserved.
 
@@ -5632,34 +5548,6 @@
 
 -------------------------------------------------------------------
 
-Copyright (c) 2017 ARM Ltd
-All rights reserved.
-
-Redistribution and use in source and binary forms, with or without
-modification, are permitted provided that the following conditions
-are met:
-1. Redistributions of source code must retain the above copyright
-   notice, this list of conditions and the following disclaimer.
-2. Redistributions in binary form must reproduce the above copyright
-   notice, this list of conditions and the following disclaimer in the
-   documentation and/or other materials provided with the distribution.
-3. The name of the company may not be used to endorse or promote
-   products derived from this software without specific prior written
-   permission.
-
-THIS SOFTWARE IS PROVIDED BY ARM LTD ``AS IS'' AND ANY EXPRESS OR IMPLIED
-WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
-MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
-IN NO EVENT SHALL ARM LTD BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
-TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
-PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
-LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
-NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
-SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
--------------------------------------------------------------------
-
 Copyright (c)1999 Citrus Project,
 All rights reserved.
 
diff --git a/libc/arch-arm64/default/bionic/memchr.S b/libc/arch-arm64/default/bionic/memchr.S
deleted file mode 100644
index 7fbcc8f..0000000
--- a/libc/arch-arm64/default/bionic/memchr.S
+++ /dev/null
@@ -1,164 +0,0 @@
-/*
- *
-   Copyright (c) 2014, ARM Limited
-   All rights Reserved.
-   Copyright (c) 2014, Linaro Ltd.
-
-   Redistribution and use in source and binary forms, with or without
-   modification, are permitted provided that the following conditions are met:
-       * Redistributions of source code must retain the above copyright
-         notice, this list of conditions and the following disclaimer.
-       * Redistributions in binary form must reproduce the above copyright
-         notice, this list of conditions and the following disclaimer in the
-         documentation and/or other materials provided with the distribution.
-       * Neither the name of the company nor the names of its contributors
-         may be used to endorse or promote products derived from this
-         software without specific prior written permission.
-
-   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-   HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-*/
-
-/* Assumptions:
- *
- * ARMv8-a, AArch64
- * Neon Available.
- */
-
-#include <private/bionic_asm.h>
-
-/* Arguments and results.  */
-#define srcin		x0
-#define chrin		w1
-#define cntin		x2
-
-#define result		x0
-
-#define src		x3
-#define	tmp		x4
-#define wtmp2		w5
-#define synd		x6
-#define soff		x9
-#define cntrem		x10
-
-#define vrepchr		v0
-#define vdata1		v1
-#define vdata2		v2
-#define vhas_chr1	v3
-#define vhas_chr2	v4
-#define vrepmask	v5
-#define vend		v6
-
-/*
- * Core algorithm:
- *
- * For each 32-byte chunk we calculate a 64-bit syndrome value, with two bits
- * per byte. For each tuple, bit 0 is set if the relevant byte matched the
- * requested character and bit 1 is not used (faster than using a 32bit
- * syndrome). Since the bits in the syndrome reflect exactly the order in which
- * things occur in the original string, counting trailing zeros allows to
- * identify exactly which byte has matched.
- */
-
-ENTRY(memchr_default)
-	/*
-	 * Magic constant 0x40100401 allows us to identify which lane matches
-	 * the requested byte.
-	 */
-	cbz	cntin, .Lzero_length
-	mov	wtmp2, #0x0401
-	movk	wtmp2, #0x4010, lsl #16
-	dup	vrepchr.16b, chrin
-	/* Work with aligned 32-byte chunks */
-	bic	src, srcin, #31
-	dup	vrepmask.4s, wtmp2
-	ands	soff, srcin, #31
-	and	cntrem, cntin, #31
-	b.eq	.Lloop
-
-	/*
-	 * Input string is not 32-byte aligned. We calculate the syndrome
-	 * value for the aligned 32 bytes block containing the first bytes
-	 * and mask the irrelevant part.
-	 */
-
-	ld1	{vdata1.16b, vdata2.16b}, [src], #32
-	sub	tmp, soff, #32
-	adds	cntin, cntin, tmp
-	cmeq	vhas_chr1.16b, vdata1.16b, vrepchr.16b
-	cmeq	vhas_chr2.16b, vdata2.16b, vrepchr.16b
-	and	vhas_chr1.16b, vhas_chr1.16b, vrepmask.16b
-	and	vhas_chr2.16b, vhas_chr2.16b, vrepmask.16b
-	addp	vend.16b, vhas_chr1.16b, vhas_chr2.16b		/* 256->128 */
-	addp	vend.16b, vend.16b, vend.16b			/* 128->64 */
-	mov	synd, vend.d[0]
-	/* Clear the soff*2 lower bits */
-	lsl	tmp, soff, #1
-	lsr	synd, synd, tmp
-	lsl	synd, synd, tmp
-	/* The first block can also be the last */
-	b.ls	.Lmasklast
-	/* Have we found something already? */
-	cbnz	synd, .Ltail
-
-.Lloop:
-	ld1	{vdata1.16b, vdata2.16b}, [src], #32
-	subs	cntin, cntin, #32
-	cmeq	vhas_chr1.16b, vdata1.16b, vrepchr.16b
-	cmeq	vhas_chr2.16b, vdata2.16b, vrepchr.16b
-	/* If we're out of data we finish regardless of the result */
-	b.ls	.Lend
-	/* Use a fast check for the termination condition */
-	orr	vend.16b, vhas_chr1.16b, vhas_chr2.16b
-	addp	vend.2d, vend.2d, vend.2d
-	mov	synd, vend.d[0]
-	/* We're not out of data, loop if we haven't found the character */
-	cbz	synd, .Lloop
-
-.Lend:
-	/* Termination condition found, let's calculate the syndrome value */
-	and	vhas_chr1.16b, vhas_chr1.16b, vrepmask.16b
-	and	vhas_chr2.16b, vhas_chr2.16b, vrepmask.16b
-	addp	vend.16b, vhas_chr1.16b, vhas_chr2.16b		/* 256->128 */
-	addp	vend.16b, vend.16b, vend.16b			/* 128->64 */
-	mov	synd, vend.d[0]
-	/* Only do the clear for the last possible block */
-	b.hi	.Ltail
-
-.Lmasklast:
-	/* Clear the (32 - ((cntrem + soff) % 32)) * 2 upper bits */
-	add	tmp, cntrem, soff
-	and	tmp, tmp, #31
-	sub	tmp, tmp, #32
-	neg	tmp, tmp, lsl #1
-	lsl	synd, synd, tmp
-	lsr	synd, synd, tmp
-
-.Ltail:
-	/* Count the trailing zeros using bit reversing */
-	rbit	synd, synd
-	/* Compensate the last post-increment */
-	sub	src, src, #32
-	/* Check that we have found a character */
-	cmp	synd, #0
-	/* And count the leading zeros */
-	clz	synd, synd
-	/* Compute the potential result */
-	add	result, src, synd, lsr #1
-	/* Select result or NULL */
-	csel	result, xzr, result, eq
-	ret
-
-.Lzero_length:
-	mov	result, xzr
-	ret
-END(memchr_default)
diff --git a/libc/arch-arm64/default/bionic/strchr.S b/libc/arch-arm64/default/bionic/strchr.S
deleted file mode 100644
index f8cb724..0000000
--- a/libc/arch-arm64/default/bionic/strchr.S
+++ /dev/null
@@ -1,153 +0,0 @@
-/*
- *
-   Copyright (c) 2014, ARM Limited
-   All rights Reserved.
-   Copyright (c) 2014, Linaro Ltd.
-
-   Redistribution and use in source and binary forms, with or without
-   modification, are permitted provided that the following conditions are met:
-       * Redistributions of source code must retain the above copyright
-         notice, this list of conditions and the following disclaimer.
-       * Redistributions in binary form must reproduce the above copyright
-         notice, this list of conditions and the following disclaimer in the
-         documentation and/or other materials provided with the distribution.
-       * Neither the name of the company nor the names of its contributors
-         may be used to endorse or promote products derived from this
-         software without specific prior written permission.
-
-   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-   HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-*/
-
-/* Assumptions:
- *
- * ARMv8-a, AArch64
- * Neon Available.
- */
-
-#include <private/bionic_asm.h>
-
-/* Arguments and results.  */
-#define srcin		x0
-#define chrin		w1
-
-#define result		x0
-
-#define src		x2
-#define	tmp1		x3
-#define wtmp2		w4
-#define tmp3		x5
-
-#define vrepchr		v0
-#define vdata1		v1
-#define vdata2		v2
-#define vhas_nul1	v3
-#define vhas_nul2	v4
-#define vhas_chr1	v5
-#define vhas_chr2	v6
-#define vrepmask_0	v7
-#define vrepmask_c	v16
-#define vend1		v17
-#define vend2		v18
-
-/* Core algorithm.
-
-   For each 32-byte hunk we calculate a 64-bit syndrome value, with
-   two bits per byte (LSB is always in bits 0 and 1, for both big
-   and little-endian systems).  For each tuple, bit 0 is set iff
-   the relevant byte matched the requested character; bit 1 is set
-   iff the relevant byte matched the NUL end of string (we trigger
-   off bit0 for the special case of looking for NUL).  Since the bits
-   in the syndrome reflect exactly the order in which things occur
-   in the original string a count_trailing_zeros() operation will
-   identify exactly which byte is causing the termination, and why.  */
-
-/* Locals and temporaries.  */
-
-ENTRY(strchr_default)
-	/* Magic constant 0x40100401 to allow us to identify which lane
-	   matches the requested byte.  Magic constant 0x80200802 used
-	   similarly for NUL termination.  */
-	mov	wtmp2, #0x0401
-	movk	wtmp2, #0x4010, lsl #16
-	dup	vrepchr.16b, chrin
-	bic	src, srcin, #31		/* Work with aligned 32-byte hunks.  */
-	dup	vrepmask_c.4s, wtmp2
-	ands	tmp1, srcin, #31
-	add	vrepmask_0.4s, vrepmask_c.4s, vrepmask_c.4s /* equiv: lsl #1 */
-	b.eq	.Lloop
-
-	/* Input string is not 32-byte aligned.  Rather than forcing
-	   the padding bytes to a safe value, we calculate the syndrome
-	   for all the bytes, but then mask off those bits of the
-	   syndrome that are related to the padding.  */
-	ld1	{vdata1.16b, vdata2.16b}, [src], #32
-	neg	tmp1, tmp1
-	cmeq	vhas_nul1.16b, vdata1.16b, #0
-	cmeq	vhas_chr1.16b, vdata1.16b, vrepchr.16b
-	cmeq	vhas_nul2.16b, vdata2.16b, #0
-	cmeq	vhas_chr2.16b, vdata2.16b, vrepchr.16b
-	and	vhas_nul1.16b, vhas_nul1.16b, vrepmask_0.16b
-	and	vhas_nul2.16b, vhas_nul2.16b, vrepmask_0.16b
-	and	vhas_chr1.16b, vhas_chr1.16b, vrepmask_c.16b
-	and	vhas_chr2.16b, vhas_chr2.16b, vrepmask_c.16b
-	orr	vend1.16b, vhas_nul1.16b, vhas_chr1.16b
-	orr	vend2.16b, vhas_nul2.16b, vhas_chr2.16b
-	lsl	tmp1, tmp1, #1
-	addp	vend1.16b, vend1.16b, vend2.16b		// 256->128
-	mov	tmp3, #~0
-	addp	vend1.16b, vend1.16b, vend2.16b		// 128->64
-	lsr	tmp1, tmp3, tmp1
-
-	mov	tmp3, vend1.d[0]
-	bic	tmp1, tmp3, tmp1	// Mask padding bits.
-	cbnz	tmp1, .Ltail
-
-.Lloop:
-	ld1	{vdata1.16b, vdata2.16b}, [src], #32
-	cmeq	vhas_nul1.16b, vdata1.16b, #0
-	cmeq	vhas_chr1.16b, vdata1.16b, vrepchr.16b
-	cmeq	vhas_nul2.16b, vdata2.16b, #0
-	cmeq	vhas_chr2.16b, vdata2.16b, vrepchr.16b
-	/* Use a fast check for the termination condition.  */
-	orr	vend1.16b, vhas_nul1.16b, vhas_chr1.16b
-	orr	vend2.16b, vhas_nul2.16b, vhas_chr2.16b
-	orr	vend1.16b, vend1.16b, vend2.16b
-	addp	vend1.2d, vend1.2d, vend1.2d
-	mov	tmp1, vend1.d[0]
-	cbz	tmp1, .Lloop
-
-	/* Termination condition found.  Now need to establish exactly why
-	   we terminated.  */
-	and	vhas_nul1.16b, vhas_nul1.16b, vrepmask_0.16b
-	and	vhas_nul2.16b, vhas_nul2.16b, vrepmask_0.16b
-	and	vhas_chr1.16b, vhas_chr1.16b, vrepmask_c.16b
-	and	vhas_chr2.16b, vhas_chr2.16b, vrepmask_c.16b
-	orr	vend1.16b, vhas_nul1.16b, vhas_chr1.16b
-	orr	vend2.16b, vhas_nul2.16b, vhas_chr2.16b
-	addp	vend1.16b, vend1.16b, vend2.16b		// 256->128
-	addp	vend1.16b, vend1.16b, vend2.16b		// 128->64
-
-	mov	tmp1, vend1.d[0]
-.Ltail:
-	/* Count the trailing zeros, by bit reversing...  */
-	rbit	tmp1, tmp1
-	/* Re-bias source.  */
-	sub	src, src, #32
-	clz	tmp1, tmp1	/* And counting the leading zeros.  */
-	/* Tmp1 is even if the target charager was found first.  Otherwise
-	   we've found the end of string and we weren't looking for NUL.  */
-	tst	tmp1, #1
-	add	result, src, tmp1, lsr #1
-	csel	result, result, xzr, eq
-	ret
-END(strchr_default)
diff --git a/libc/arch-arm64/default/bionic/strcmp.S b/libc/arch-arm64/default/bionic/strcmp.S
deleted file mode 100644
index dfac7c4..0000000
--- a/libc/arch-arm64/default/bionic/strcmp.S
+++ /dev/null
@@ -1,192 +0,0 @@
-/* Copyright (c) 2012, Linaro Limited
-   All rights reserved.
-
-   Redistribution and use in source and binary forms, with or without
-   modification, are permitted provided that the following conditions are met:
-       * Redistributions of source code must retain the above copyright
-         notice, this list of conditions and the following disclaimer.
-       * Redistributions in binary form must reproduce the above copyright
-         notice, this list of conditions and the following disclaimer in the
-         documentation and/or other materials provided with the distribution.
-       * Neither the name of the Linaro nor the
-         names of its contributors may be used to endorse or promote products
-         derived from this software without specific prior written permission.
-
-   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-   HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-*/
-
-/* Assumptions:
- *
- * ARMv8-a, AArch64
- */
-
-#include <private/bionic_asm.h>
-
-#define L(label) .L ## label
-
-#define REP8_01 0x0101010101010101
-#define REP8_7f 0x7f7f7f7f7f7f7f7f
-#define REP8_80 0x8080808080808080
-
-/* Parameters and result.  */
-#define src1		x0
-#define src2		x1
-#define result		x0
-
-/* Internal variables.  */
-#define data1		x2
-#define data1w		w2
-#define data2		x3
-#define data2w		w3
-#define has_nul		x4
-#define diff		x5
-#define syndrome	x6
-#define tmp1		x7
-#define tmp2		x8
-#define tmp3		x9
-#define zeroones	x10
-#define pos		x11
-
-	/* Start of performance-critical section  -- one 64B cache line.  */
-ENTRY(strcmp_default)
-.p2align  6
-	eor	tmp1, src1, src2
-	mov	zeroones, #REP8_01
-	tst	tmp1, #7
-	b.ne	L(misaligned8)
-	ands	tmp1, src1, #7
-	b.ne	L(mutual_align)
-	/* NUL detection works on the principle that (X - 1) & (~X) & 0x80
-	   (=> (X - 1) & ~(X | 0x7f)) is non-zero iff a byte is zero, and
-	   can be done in parallel across the entire word.  */
-L(loop_aligned):
-	ldr	data1, [src1], #8
-	ldr	data2, [src2], #8
-L(start_realigned):
-	sub	tmp1, data1, zeroones
-	orr	tmp2, data1, #REP8_7f
-	eor	diff, data1, data2	/* Non-zero if differences found.  */
-	bic	has_nul, tmp1, tmp2	/* Non-zero if NUL terminator.  */
-	orr	syndrome, diff, has_nul
-	cbz	syndrome, L(loop_aligned)
-	/* End of performance-critical section  -- one 64B cache line.  */
-
-L(end):
-#ifndef	__AARCH64EB__
-	rev	syndrome, syndrome
-	rev	data1, data1
-	/* The MS-non-zero bit of the syndrome marks either the first bit
-	   that is different, or the top bit of the first zero byte.
-	   Shifting left now will bring the critical information into the
-	   top bits.  */
-	clz	pos, syndrome
-	rev	data2, data2
-	lsl	data1, data1, pos
-	lsl	data2, data2, pos
-	/* But we need to zero-extend (char is unsigned) the value and then
-	   perform a signed 32-bit subtraction.  */
-	lsr	data1, data1, #56
-	sub	result, data1, data2, lsr #56
-	ret
-#else
-	/* For big-endian we cannot use the trick with the syndrome value
-	   as carry-propagation can corrupt the upper bits if the trailing
-	   bytes in the string contain 0x01.  */
-	/* However, if there is no NUL byte in the dword, we can generate
-	   the result directly.  We can't just subtract the bytes as the
-	   MSB might be significant.  */
-	cbnz	has_nul, 1f
-	cmp	data1, data2
-	cset	result, ne
-	cneg	result, result, lo
-	ret
-1:
-	/* Re-compute the NUL-byte detection, using a byte-reversed value.  */
-	rev	tmp3, data1
-	sub	tmp1, tmp3, zeroones
-	orr	tmp2, tmp3, #REP8_7f
-	bic	has_nul, tmp1, tmp2
-	rev	has_nul, has_nul
-	orr	syndrome, diff, has_nul
-	clz	pos, syndrome
-	/* The MS-non-zero bit of the syndrome marks either the first bit
-	   that is different, or the top bit of the first zero byte.
-	   Shifting left now will bring the critical information into the
-	   top bits.  */
-	lsl	data1, data1, pos
-	lsl	data2, data2, pos
-	/* But we need to zero-extend (char is unsigned) the value and then
-	   perform a signed 32-bit subtraction.  */
-	lsr	data1, data1, #56
-	sub	result, data1, data2, lsr #56
-	ret
-#endif
-
-L(mutual_align):
-	/* Sources are mutually aligned, but are not currently at an
-	   alignment boundary.  Round down the addresses and then mask off
-	   the bytes that preceed the start point.  */
-	bic	src1, src1, #7
-	bic	src2, src2, #7
-	lsl	tmp1, tmp1, #3		/* Bytes beyond alignment -> bits.  */
-	ldr	data1, [src1], #8
-	neg	tmp1, tmp1		/* Bits to alignment -64.  */
-	ldr	data2, [src2], #8
-	mov	tmp2, #~0
-#ifdef __AARCH64EB__
-	/* Big-endian.  Early bytes are at MSB.  */
-	lsl	tmp2, tmp2, tmp1	/* Shift (tmp1 & 63).  */
-#else
-	/* Little-endian.  Early bytes are at LSB.  */
-	lsr	tmp2, tmp2, tmp1	/* Shift (tmp1 & 63).  */
-#endif
-	orr	data1, data1, tmp2
-	orr	data2, data2, tmp2
-	b	L(start_realigned)
-
-L(misaligned8):
-	/* Align SRC1 to 8 bytes and then compare 8 bytes at a time, always
-	   checking to make sure that we don't access beyond page boundary in
-	   SRC2.  */
-	tst	src1, #7
-	b.eq	L(loop_misaligned)
-L(do_misaligned):
-	ldrb	data1w, [src1], #1
-	ldrb	data2w, [src2], #1
-	cmp	data1w, #1
-	ccmp	data1w, data2w, #0, cs	/* NZCV = 0b0000.  */
-	b.ne	L(done)
-	tst	src1, #7
-	b.ne	L(do_misaligned)
-
-L(loop_misaligned):
-	/* Test if we are within the last dword of the end of a 4K page.  If
-	   yes then jump back to the misaligned loop to copy a byte at a time.  */
-	and	tmp1, src2, #0xff8
-	eor	tmp1, tmp1, #0xff8
-	cbz	tmp1, L(do_misaligned)
-	ldr	data1, [src1], #8
-	ldr	data2, [src2], #8
-
-	sub	tmp1, data1, zeroones
-	orr	tmp2, data1, #REP8_7f
-	eor	diff, data1, data2	/* Non-zero if differences found.  */
-	bic	has_nul, tmp1, tmp2	/* Non-zero if NUL terminator.  */
-	orr	syndrome, diff, has_nul
-	cbz	syndrome, L(loop_misaligned)
-	b	L(end)
-
-L(done):
-	sub	result, data1, data2
-	ret
-END(strcmp_default)
diff --git a/libc/arch-arm64/default/bionic/strlen.S b/libc/arch-arm64/default/bionic/strlen.S
deleted file mode 100644
index 07c5294..0000000
--- a/libc/arch-arm64/default/bionic/strlen.S
+++ /dev/null
@@ -1,227 +0,0 @@
-/* Copyright (c) 2013-2015, Linaro Limited
-   All rights reserved.
-
-   Redistribution and use in source and binary forms, with or without
-   modification, are permitted provided that the following conditions are met:
-       * Redistributions of source code must retain the above copyright
-	 notice, this list of conditions and the following disclaimer.
-       * Redistributions in binary form must reproduce the above copyright
-	 notice, this list of conditions and the following disclaimer in the
-	 documentation and/or other materials provided with the distribution.
-       * Neither the name of the Linaro nor the
-	 names of its contributors may be used to endorse or promote products
-	 derived from this software without specific prior written permission.
-
-   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-   HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
-
-/* Assumptions:
- *
- * ARMv8-a, AArch64, unaligned accesses, min page size 4k.
- */
-
-#include <private/bionic_asm.h>
-
-/* To test the page crossing code path more thoroughly, compile with
-   -DTEST_PAGE_CROSS - this will force all calls through the slower
-   entry path.  This option is not intended for production use.	 */
-
-/* Arguments and results.  */
-#define srcin		x0
-#define len		x0
-
-/* Locals and temporaries.  */
-#define src		x1
-#define data1		x2
-#define data2		x3
-#define has_nul1	x4
-#define has_nul2	x5
-#define tmp1		x4
-#define tmp2		x5
-#define tmp3		x6
-#define tmp4		x7
-#define zeroones	x8
-
-#define L(l) .L ## l
-
-	/* NUL detection works on the principle that (X - 1) & (~X) & 0x80
-	   (=> (X - 1) & ~(X | 0x7f)) is non-zero iff a byte is zero, and
-	   can be done in parallel across the entire word. A faster check
-	   (X - 1) & 0x80 is zero for non-NUL ASCII characters, but gives
-	   false hits for characters 129..255.	*/
-
-#define REP8_01 0x0101010101010101
-#define REP8_7f 0x7f7f7f7f7f7f7f7f
-#define REP8_80 0x8080808080808080
-
-#ifdef TEST_PAGE_CROSS
-# define MIN_PAGE_SIZE 15
-#else
-# define MIN_PAGE_SIZE 4096
-#endif
-
-	/* Since strings are short on average, we check the first 16 bytes
-	   of the string for a NUL character.  In order to do an unaligned ldp
-	   safely we have to do a page cross check first.  If there is a NUL
-	   byte we calculate the length from the 2 8-byte words using
-	   conditional select to reduce branch mispredictions (it is unlikely
-	   strlen will be repeatedly called on strings with the same length).
-
-	   If the string is longer than 16 bytes, we align src so don't need
-	   further page cross checks, and process 32 bytes per iteration
-	   using the fast NUL check.  If we encounter non-ASCII characters,
-	   fallback to a second loop using the full NUL check.
-
-	   If the page cross check fails, we read 16 bytes from an aligned
-	   address, remove any characters before the string, and continue
-	   in the main loop using aligned loads.  Since strings crossing a
-	   page in the first 16 bytes are rare (probability of
-	   16/MIN_PAGE_SIZE ~= 0.4%), this case does not need to be optimized.
-
-	   AArch64 systems have a minimum page size of 4k.  We don't bother
-	   checking for larger page sizes - the cost of setting up the correct
-	   page size is just not worth the extra gain from a small reduction in
-	   the cases taking the slow path.  Note that we only care about
-	   whether the first fetch, which may be misaligned, crosses a page
-	   boundary.  */
-
-ENTRY(strlen_default)
-	and	tmp1, srcin, MIN_PAGE_SIZE - 1
-	mov	zeroones, REP8_01
-	cmp	tmp1, MIN_PAGE_SIZE - 16
-	b.gt	L(page_cross)
-	ldp	data1, data2, [srcin]
-#ifdef __AARCH64EB__
-	/* For big-endian, carry propagation (if the final byte in the
-	   string is 0x01) means we cannot use has_nul1/2 directly.
-	   Since we expect strings to be small and early-exit,
-	   byte-swap the data now so has_null1/2 will be correct.  */
-	rev	data1, data1
-	rev	data2, data2
-#endif
-	sub	tmp1, data1, zeroones
-	orr	tmp2, data1, REP8_7f
-	sub	tmp3, data2, zeroones
-	orr	tmp4, data2, REP8_7f
-	bics	has_nul1, tmp1, tmp2
-	bic	has_nul2, tmp3, tmp4
-	ccmp	has_nul2, 0, 0, eq
-	beq	L(main_loop_entry)
-
-	/* Enter with C = has_nul1 == 0.  */
-	csel	has_nul1, has_nul1, has_nul2, cc
-	mov	len, 8
-	rev	has_nul1, has_nul1
-	clz	tmp1, has_nul1
-	csel	len, xzr, len, cc
-	add	len, len, tmp1, lsr 3
-	ret
-
-	/* The inner loop processes 32 bytes per iteration and uses the fast
-	   NUL check.  If we encounter non-ASCII characters, use a second
-	   loop with the accurate NUL check.  */
-	.p2align 4
-L(main_loop_entry):
-	bic	src, srcin, 15
-	sub	src, src, 16
-L(main_loop):
-	ldp	data1, data2, [src, 32]!
-.Lpage_cross_entry:
-	sub	tmp1, data1, zeroones
-	sub	tmp3, data2, zeroones
-	orr	tmp2, tmp1, tmp3
-	tst	tmp2, zeroones, lsl 7
-	bne	1f
-	ldp	data1, data2, [src, 16]
-	sub	tmp1, data1, zeroones
-	sub	tmp3, data2, zeroones
-	orr	tmp2, tmp1, tmp3
-	tst	tmp2, zeroones, lsl 7
-	beq	L(main_loop)
-	add	src, src, 16
-1:
-	/* The fast check failed, so do the slower, accurate NUL check.	 */
-	orr	tmp2, data1, REP8_7f
-	orr	tmp4, data2, REP8_7f
-	bics	has_nul1, tmp1, tmp2
-	bic	has_nul2, tmp3, tmp4
-	ccmp	has_nul2, 0, 0, eq
-	beq	L(nonascii_loop)
-
-	/* Enter with C = has_nul1 == 0.  */
-L(tail):
-#ifdef __AARCH64EB__
-	/* For big-endian, carry propagation (if the final byte in the
-	   string is 0x01) means we cannot use has_nul1/2 directly.  The
-	   easiest way to get the correct byte is to byte-swap the data
-	   and calculate the syndrome a second time.  */
-	csel	data1, data1, data2, cc
-	rev	data1, data1
-	sub	tmp1, data1, zeroones
-	orr	tmp2, data1, REP8_7f
-	bic	has_nul1, tmp1, tmp2
-#else
-	csel	has_nul1, has_nul1, has_nul2, cc
-#endif
-	sub	len, src, srcin
-	rev	has_nul1, has_nul1
-	add	tmp2, len, 8
-	clz	tmp1, has_nul1
-	csel	len, len, tmp2, cc
-	add	len, len, tmp1, lsr 3
-	ret
-
-L(nonascii_loop):
-	ldp	data1, data2, [src, 16]!
-	sub	tmp1, data1, zeroones
-	orr	tmp2, data1, REP8_7f
-	sub	tmp3, data2, zeroones
-	orr	tmp4, data2, REP8_7f
-	bics	has_nul1, tmp1, tmp2
-	bic	has_nul2, tmp3, tmp4
-	ccmp	has_nul2, 0, 0, eq
-	bne	L(tail)
-	ldp	data1, data2, [src, 16]!
-	sub	tmp1, data1, zeroones
-	orr	tmp2, data1, REP8_7f
-	sub	tmp3, data2, zeroones
-	orr	tmp4, data2, REP8_7f
-	bics	has_nul1, tmp1, tmp2
-	bic	has_nul2, tmp3, tmp4
-	ccmp	has_nul2, 0, 0, eq
-	beq	L(nonascii_loop)
-	b	L(tail)
-
-	/* Load 16 bytes from [srcin & ~15] and force the bytes that precede
-	   srcin to 0x7f, so we ignore any NUL bytes before the string.
-	   Then continue in the aligned loop.  */
-L(page_cross):
-	bic	src, srcin, 15
-	ldp	data1, data2, [src]
-	lsl	tmp1, srcin, 3
-	mov	tmp4, -1
-#ifdef __AARCH64EB__
-	/* Big-endian.	Early bytes are at MSB.	 */
-	lsr	tmp1, tmp4, tmp1	/* Shift (tmp1 & 63).  */
-#else
-	/* Little-endian.  Early bytes are at LSB.  */
-	lsl	tmp1, tmp4, tmp1	/* Shift (tmp1 & 63).  */
-#endif
-	orr	tmp1, tmp1, REP8_80
-	orn	data1, data1, tmp1
-	orn	tmp2, data2, tmp1
-	tst	srcin, 8
-	csel	data1, data1, tmp4, eq
-	csel	data2, data2, tmp2, eq
-	b	L(page_cross_entry)
-
-END(strlen_default)
diff --git a/libc/arch-arm64/default/bionic/strncmp.S b/libc/arch-arm64/default/bionic/strncmp.S
deleted file mode 100644
index 5432b73..0000000
--- a/libc/arch-arm64/default/bionic/strncmp.S
+++ /dev/null
@@ -1,280 +0,0 @@
-/* Copyright (c) 2014, Linaro Limited
-   All rights reserved.
-
-   Redistribution and use in source and binary forms, with or without
-   modification, are permitted provided that the following conditions are met:
-       * Redistributions of source code must retain the above copyright
-         notice, this list of conditions and the following disclaimer.
-       * Redistributions in binary form must reproduce the above copyright
-         notice, this list of conditions and the following disclaimer in the
-         documentation and/or other materials provided with the distribution.
-       * Neither the name of the Linaro nor the
-         names of its contributors may be used to endorse or promote products
-         derived from this software without specific prior written permission.
-
-   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-   HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-*/
-
-/* Assumptions:
- *
- * ARMv8-a, AArch64
- */
-
-#include <private/bionic_asm.h>
-
-#define REP8_01 0x0101010101010101
-#define REP8_7f 0x7f7f7f7f7f7f7f7f
-#define REP8_80 0x8080808080808080
-
-/* Parameters and result.  */
-#define src1		x0
-#define src2		x1
-#define limit		x2
-#define result		x0
-
-/* Internal variables.  */
-#define data1		x3
-#define data1w		w3
-#define data2		x4
-#define data2w		w4
-#define has_nul		x5
-#define diff		x6
-#define syndrome	x7
-#define tmp1		x8
-#define tmp2		x9
-#define tmp3		x10
-#define zeroones	x11
-#define pos		x12
-#define limit_wd	x13
-#define mask		x14
-#define endloop		x15
-#define count		mask
-
-	.text
-	.p2align 6
-	.rep 7
-	nop	/* Pad so that the loop below fits a cache line.  */
-	.endr
-ENTRY(strncmp_default)
-	cbz	limit, .Lret0
-	eor	tmp1, src1, src2
-	mov	zeroones, #REP8_01
-	tst	tmp1, #7
-	and	count, src1, #7
-	b.ne	.Lmisaligned8
-	cbnz	count, .Lmutual_align
-	/* Calculate the number of full and partial words -1.  */
-	sub	limit_wd, limit, #1	/* limit != 0, so no underflow.  */
-	lsr	limit_wd, limit_wd, #3	/* Convert to Dwords.  */
-
-	/* NUL detection works on the principle that (X - 1) & (~X) & 0x80
-	   (=> (X - 1) & ~(X | 0x7f)) is non-zero iff a byte is zero, and
-	   can be done in parallel across the entire word.  */
-	/* Start of performance-critical section  -- one 64B cache line.  */
-.Lloop_aligned:
-	ldr	data1, [src1], #8
-	ldr	data2, [src2], #8
-.Lstart_realigned:
-	subs	limit_wd, limit_wd, #1
-	sub	tmp1, data1, zeroones
-	orr	tmp2, data1, #REP8_7f
-	eor	diff, data1, data2	/* Non-zero if differences found.  */
-	csinv	endloop, diff, xzr, pl	/* Last Dword or differences.  */
-	bics	has_nul, tmp1, tmp2	/* Non-zero if NUL terminator.  */
-	ccmp	endloop, #0, #0, eq
-	b.eq	.Lloop_aligned
-	/* End of performance-critical section  -- one 64B cache line.  */
-
-	/* Not reached the limit, must have found the end or a diff.  */
-	tbz	limit_wd, #63, .Lnot_limit
-
-	/* Limit % 8 == 0 => all bytes significant.  */
-	ands	limit, limit, #7
-	b.eq	.Lnot_limit
-
-	lsl	limit, limit, #3	/* Bits -> bytes.  */
-	mov	mask, #~0
-#ifdef __AARCH64EB__
-	lsr	mask, mask, limit
-#else
-	lsl	mask, mask, limit
-#endif
-	bic	data1, data1, mask
-	bic	data2, data2, mask
-
-	/* Make sure that the NUL byte is marked in the syndrome.  */
-	orr	has_nul, has_nul, mask
-
-.Lnot_limit:
-	orr	syndrome, diff, has_nul
-
-#ifndef	__AARCH64EB__
-	rev	syndrome, syndrome
-	rev	data1, data1
-	/* The MS-non-zero bit of the syndrome marks either the first bit
-	   that is different, or the top bit of the first zero byte.
-	   Shifting left now will bring the critical information into the
-	   top bits.  */
-	clz	pos, syndrome
-	rev	data2, data2
-	lsl	data1, data1, pos
-	lsl	data2, data2, pos
-	/* But we need to zero-extend (char is unsigned) the value and then
-	   perform a signed 32-bit subtraction.  */
-	lsr	data1, data1, #56
-	sub	result, data1, data2, lsr #56
-	ret
-#else
-	/* For big-endian we cannot use the trick with the syndrome value
-	   as carry-propagation can corrupt the upper bits if the trailing
-	   bytes in the string contain 0x01.  */
-	/* However, if there is no NUL byte in the dword, we can generate
-	   the result directly.  We can't just subtract the bytes as the
-	   MSB might be significant.  */
-	cbnz	has_nul, 1f
-	cmp	data1, data2
-	cset	result, ne
-	cneg	result, result, lo
-	ret
-1:
-	/* Re-compute the NUL-byte detection, using a byte-reversed value.  */
-	rev	tmp3, data1
-	sub	tmp1, tmp3, zeroones
-	orr	tmp2, tmp3, #REP8_7f
-	bic	has_nul, tmp1, tmp2
-	rev	has_nul, has_nul
-	orr	syndrome, diff, has_nul
-	clz	pos, syndrome
-	/* The MS-non-zero bit of the syndrome marks either the first bit
-	   that is different, or the top bit of the first zero byte.
-	   Shifting left now will bring the critical information into the
-	   top bits.  */
-	lsl	data1, data1, pos
-	lsl	data2, data2, pos
-	/* But we need to zero-extend (char is unsigned) the value and then
-	   perform a signed 32-bit subtraction.  */
-	lsr	data1, data1, #56
-	sub	result, data1, data2, lsr #56
-	ret
-#endif
-
-.Lmutual_align:
-	/* Sources are mutually aligned, but are not currently at an
-	   alignment boundary.  Round down the addresses and then mask off
-	   the bytes that precede the start point.
-	   We also need to adjust the limit calculations, but without
-	   overflowing if the limit is near ULONG_MAX.  */
-	bic	src1, src1, #7
-	bic	src2, src2, #7
-	ldr	data1, [src1], #8
-	neg	tmp3, count, lsl #3	/* 64 - bits(bytes beyond align). */
-	ldr	data2, [src2], #8
-	mov	tmp2, #~0
-	sub	limit_wd, limit, #1	/* limit != 0, so no underflow.  */
-#ifdef __AARCH64EB__
-	/* Big-endian.  Early bytes are at MSB.  */
-	lsl	tmp2, tmp2, tmp3	/* Shift (count & 63).  */
-#else
-	/* Little-endian.  Early bytes are at LSB.  */
-	lsr	tmp2, tmp2, tmp3	/* Shift (count & 63).  */
-#endif
-	and	tmp3, limit_wd, #7
-	lsr	limit_wd, limit_wd, #3
-	/* Adjust the limit. Only low 3 bits used, so overflow irrelevant.  */
-	add	limit, limit, count
-	add	tmp3, tmp3, count
-	orr	data1, data1, tmp2
-	orr	data2, data2, tmp2
-	add	limit_wd, limit_wd, tmp3, lsr #3
-	b	.Lstart_realigned
-
-	.p2align 6
-	/* Don't bother with dwords for up to 16 bytes.  */
-.Lmisaligned8:
-	cmp	limit, #16
-	b.hs	.Ltry_misaligned_words
-
-.Lbyte_loop:
-	/* Perhaps we can do better than this.  */
-	ldrb	data1w, [src1], #1
-	ldrb	data2w, [src2], #1
-	subs	limit, limit, #1
-	ccmp	data1w, #1, #0, hi	/* NZCV = 0b0000.  */
-	ccmp	data1w, data2w, #0, cs	/* NZCV = 0b0000.  */
-	b.eq	.Lbyte_loop
-.Ldone:
-	sub	result, data1, data2
-	ret
-	/* Align the SRC1 to a dword by doing a bytewise compare and then do
-	   the dword loop.  */
-.Ltry_misaligned_words:
-	lsr	limit_wd, limit, #3
-	cbz	count, .Ldo_misaligned
-
-	neg	count, count
-	and	count, count, #7
-	sub	limit, limit, count
-	lsr	limit_wd, limit, #3
-
-.Lpage_end_loop:
-	ldrb	data1w, [src1], #1
-	ldrb	data2w, [src2], #1
-	cmp	data1w, #1
-	ccmp	data1w, data2w, #0, cs	/* NZCV = 0b0000.  */
-	b.ne	.Ldone
-	subs	count, count, #1
-	b.hi	.Lpage_end_loop
-
-.Ldo_misaligned:
-	/* Prepare ourselves for the next page crossing.  Unlike the aligned
-	   loop, we fetch 1 less dword because we risk crossing bounds on
-	   SRC2.  */
-	mov	count, #8
-	subs	limit_wd, limit_wd, #1
-	b.lo	.Ldone_loop
-.Lloop_misaligned:
-	and	tmp2, src2, #0xff8
-	eor	tmp2, tmp2, #0xff8
-	cbz	tmp2, .Lpage_end_loop
-
-	ldr	data1, [src1], #8
-	ldr	data2, [src2], #8
-	sub	tmp1, data1, zeroones
-	orr	tmp2, data1, #REP8_7f
-	eor	diff, data1, data2	/* Non-zero if differences found.  */
-	bics	has_nul, tmp1, tmp2	/* Non-zero if NUL terminator.  */
-	ccmp	diff, #0, #0, eq
-	b.ne	.Lnot_limit
-	subs	limit_wd, limit_wd, #1
-	b.pl	.Lloop_misaligned
-
-.Ldone_loop:
-	/* We found a difference or a NULL before the limit was reached.  */
-	and	limit, limit, #7
-	cbz	limit, .Lnot_limit
-	/* Read the last word.  */
-	sub	src1, src1, 8
-	sub	src2, src2, 8
-	ldr	data1, [src1, limit]
-	ldr	data2, [src2, limit]
-	sub	tmp1, data1, zeroones
-	orr	tmp2, data1, #REP8_7f
-	eor	diff, data1, data2	/* Non-zero if differences found.  */
-	bics	has_nul, tmp1, tmp2	/* Non-zero if NUL terminator.  */
-	ccmp	diff, #0, #0, eq
-	b.ne	.Lnot_limit
-
-.Lret0:
-	mov	result, #0
-	ret
-END(strncmp_default)
diff --git a/libc/arch-arm64/default/bionic/strnlen.S b/libc/arch-arm64/default/bionic/strnlen.S
deleted file mode 100644
index 1694532..0000000
--- a/libc/arch-arm64/default/bionic/strnlen.S
+++ /dev/null
@@ -1,174 +0,0 @@
-/* Copyright (c) 2014, Linaro Limited
-   All rights reserved.
-
-   Redistribution and use in source and binary forms, with or without
-   modification, are permitted provided that the following conditions are met:
-       * Redistributions of source code must retain the above copyright
-         notice, this list of conditions and the following disclaimer.
-       * Redistributions in binary form must reproduce the above copyright
-         notice, this list of conditions and the following disclaimer in the
-         documentation and/or other materials provided with the distribution.
-       * Neither the name of the Linaro nor the
-         names of its contributors may be used to endorse or promote products
-         derived from this software without specific prior written permission.
-
-   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-   HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-*/
-
-/* Assumptions:
- *
- * ARMv8-a, AArch64
- */
-
-#include <private/bionic_asm.h>
-
-/* Arguments and results.  */
-#define srcin		x0
-#define len		x0
-#define limit		x1
-
-/* Locals and temporaries.  */
-#define src		x2
-#define data1		x3
-#define data2		x4
-#define data2a		x5
-#define has_nul1	x6
-#define has_nul2	x7
-#define tmp1		x8
-#define tmp2		x9
-#define tmp3		x10
-#define tmp4		x11
-#define zeroones	x12
-#define pos		x13
-#define limit_wd	x14
-
-#define REP8_01 0x0101010101010101
-#define REP8_7f 0x7f7f7f7f7f7f7f7f
-#define REP8_80 0x8080808080808080
-
-	.text
-	.p2align	6
-.Lstart:
-	/* Pre-pad to ensure critical loop begins an icache line.  */
-	.rep 7
-	nop
-	.endr
-	/* Put this code here to avoid wasting more space with pre-padding.  */
-.Lhit_limit:
-	mov	len, limit
-	ret
-
-ENTRY(strnlen_default)
-	cbz	limit, .Lhit_limit
-	mov	zeroones, #REP8_01
-	bic	src, srcin, #15
-	ands	tmp1, srcin, #15
-	b.ne	.Lmisaligned
-	/* Calculate the number of full and partial words -1.  */
-	sub	limit_wd, limit, #1	/* Limit != 0, so no underflow.  */
-	lsr	limit_wd, limit_wd, #4	/* Convert to Qwords.  */
-
-	/* NUL detection works on the principle that (X - 1) & (~X) & 0x80
-	   (=> (X - 1) & ~(X | 0x7f)) is non-zero iff a byte is zero, and
-	   can be done in parallel across the entire word.  */
-	/* The inner loop deals with two Dwords at a time.  This has a
-	   slightly higher start-up cost, but we should win quite quickly,
-	   especially on cores with a high number of issue slots per
-	   cycle, as we get much better parallelism out of the operations.  */
-
-	/* Start of critial section -- keep to one 64Byte cache line.  */
-.Lloop:
-	ldp	data1, data2, [src], #16
-.Lrealigned:
-	sub	tmp1, data1, zeroones
-	orr	tmp2, data1, #REP8_7f
-	sub	tmp3, data2, zeroones
-	orr	tmp4, data2, #REP8_7f
-	bic	has_nul1, tmp1, tmp2
-	bic	has_nul2, tmp3, tmp4
-	subs	limit_wd, limit_wd, #1
-	orr	tmp1, has_nul1, has_nul2
-	ccmp	tmp1, #0, #0, pl	/* NZCV = 0000  */
-	b.eq	.Lloop
-	/* End of critical section -- keep to one 64Byte cache line.  */
-
-	orr	tmp1, has_nul1, has_nul2
-	cbz	tmp1, .Lhit_limit	/* No null in final Qword.  */
-
-	/* We know there's a null in the final Qword.  The easiest thing
-	   to do now is work out the length of the string and return
-	   MIN (len, limit).  */
-
-	sub	len, src, srcin
-	cbz	has_nul1, .Lnul_in_data2
-#ifdef __AARCH64EB__
-	mov	data2, data1
-#endif
-	sub	len, len, #8
-	mov	has_nul2, has_nul1
-.Lnul_in_data2:
-#ifdef __AARCH64EB__
-	/* For big-endian, carry propagation (if the final byte in the
-	   string is 0x01) means we cannot use has_nul directly.  The
-	   easiest way to get the correct byte is to byte-swap the data
-	   and calculate the syndrome a second time.  */
-	rev	data2, data2
-	sub	tmp1, data2, zeroones
-	orr	tmp2, data2, #REP8_7f
-	bic	has_nul2, tmp1, tmp2
-#endif
-	sub	len, len, #8
-	rev	has_nul2, has_nul2
-	clz	pos, has_nul2
-	add	len, len, pos, lsr #3		/* Bits to bytes.  */
-	cmp	len, limit
-	csel	len, len, limit, ls		/* Return the lower value.  */
-	ret
-
-.Lmisaligned:
-	/* Deal with a partial first word.
-	   We're doing two things in parallel here;
-	   1) Calculate the number of words (but avoiding overflow if
-	      limit is near ULONG_MAX) - to do this we need to work out
-	      limit + tmp1 - 1 as a 65-bit value before shifting it;
-	   2) Load and mask the initial data words - we force the bytes
-	      before the ones we are interested in to 0xff - this ensures
-	      early bytes will not hit any zero detection.  */
-	sub	limit_wd, limit, #1
-	neg	tmp4, tmp1
-	cmp	tmp1, #8
-
-	and	tmp3, limit_wd, #15
-	lsr	limit_wd, limit_wd, #4
-	mov	tmp2, #~0
-
-	ldp	data1, data2, [src], #16
-	lsl	tmp4, tmp4, #3		/* Bytes beyond alignment -> bits.  */
-	add	tmp3, tmp3, tmp1
-
-#ifdef __AARCH64EB__
-	/* Big-endian.  Early bytes are at MSB.  */
-	lsl	tmp2, tmp2, tmp4	/* Shift (tmp1 & 63).  */
-#else
-	/* Little-endian.  Early bytes are at LSB.  */
-	lsr	tmp2, tmp2, tmp4	/* Shift (tmp1 & 63).  */
-#endif
-	add	limit_wd, limit_wd, tmp3, lsr #4
-
-	orr	data1, data1, tmp2
-	orr	data2a, data2, tmp2
-
-	csinv	data1, data1, xzr, le
-	csel	data2, data2, data2a, le
-	b	.Lrealigned
-END(strnlen_default)
diff --git a/libc/arch-arm64/dynamic_function_dispatch.cpp b/libc/arch-arm64/dynamic_function_dispatch.cpp
index 37abea4..5c6d4ed 100644
--- a/libc/arch-arm64/dynamic_function_dispatch.cpp
+++ b/libc/arch-arm64/dynamic_function_dispatch.cpp
@@ -47,16 +47,34 @@
     if (supports_mte(arg->_hwcap2)) {
         RETURN_FUNC(memchr_func, memchr_mte);
     } else {
-        RETURN_FUNC(memchr_func, memchr_default);
+        RETURN_FUNC(memchr_func, __memchr_aarch64);
+    }
+}
+
+typedef int stpcpy_func(char*, const char*);
+DEFINE_IFUNC_FOR(stpcpy) {
+    if (supports_mte(arg->_hwcap2)) {
+        RETURN_FUNC(stpcpy_func, stpcpy_mte);
+    } else {
+        RETURN_FUNC(stpcpy_func, __stpcpy_aarch64);
     }
 }
 
 typedef char* strchr_func(const char*, int);
 DEFINE_IFUNC_FOR(strchr) {
     if (supports_mte(arg->_hwcap2)) {
-        RETURN_FUNC(strchr_func, strchr_mte);
+        RETURN_FUNC(strchr_func, __strchr_aarch64_mte);
     } else {
-        RETURN_FUNC(strchr_func, strchr_default);
+        RETURN_FUNC(strchr_func, __strchr_aarch64);
+    }
+}
+
+typedef char* strchrnul_func(const char*, int);
+DEFINE_IFUNC_FOR(strchrnul) {
+    if (supports_mte(arg->_hwcap2)) {
+        RETURN_FUNC(strchrnul_func, strchrnul_mte);
+    } else {
+        RETURN_FUNC(strchrnul_func, __strchrnul_aarch64);
     }
 }
 
@@ -65,16 +83,25 @@
     if (supports_mte(arg->_hwcap2)) {
         RETURN_FUNC(strcmp_func, strcmp_mte);
     } else {
-        RETURN_FUNC(strcmp_func, strcmp_default);
+        RETURN_FUNC(strcmp_func, __strcmp_aarch64);
+    }
+}
+
+typedef int strcpy_func(char*, const char*);
+DEFINE_IFUNC_FOR(strcpy) {
+    if (supports_mte(arg->_hwcap2)) {
+        RETURN_FUNC(strcpy_func, strcpy_mte);
+    } else {
+        RETURN_FUNC(strcpy_func, __strcpy_aarch64);
     }
 }
 
 typedef size_t strlen_func(const char*);
 DEFINE_IFUNC_FOR(strlen) {
     if (supports_mte(arg->_hwcap2)) {
-        RETURN_FUNC(strlen_func, strlen_mte);
+        RETURN_FUNC(strlen_func, __strlen_aarch64_mte);
     } else {
-        RETURN_FUNC(strlen_func, strlen_default);
+        RETURN_FUNC(strlen_func, __strlen_aarch64);
     }
 }
 
@@ -83,7 +110,7 @@
     if (supports_mte(arg->_hwcap2)) {
         RETURN_FUNC(strncmp_func, strncmp_mte);
     } else {
-        RETURN_FUNC(strncmp_func, strncmp_default);
+        RETURN_FUNC(strncmp_func, __strncmp_aarch64);
     }
 }
 
@@ -92,7 +119,16 @@
     if (supports_mte(arg->_hwcap2)) {
         RETURN_FUNC(strnlen_func, strnlen_mte);
     } else {
-        RETURN_FUNC(strnlen_func, strnlen_default);
+        RETURN_FUNC(strnlen_func, __strnlen_aarch64);
+    }
+}
+
+typedef char* strrchr_func(const char*, int);
+DEFINE_IFUNC_FOR(strrchr) {
+    if (supports_mte(arg->_hwcap2)) {
+        RETURN_FUNC(strrchr_func, strrchr_mte);
+    } else {
+        RETURN_FUNC(strrchr_func, __strrchr_aarch64);
     }
 }
 
diff --git a/libc/arch-arm64/generic/bionic/memcmp.S b/libc/arch-arm64/generic/bionic/memcmp.S
deleted file mode 100644
index bff54ae..0000000
--- a/libc/arch-arm64/generic/bionic/memcmp.S
+++ /dev/null
@@ -1,167 +0,0 @@
-/*
- * Copyright (c) 2017 ARM Ltd
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. The name of the company may not be used to endorse or promote
- *    products derived from this software without specific prior written
- *    permission.
- *
- * THIS SOFTWARE IS PROVIDED BY ARM LTD ``AS IS'' AND ANY EXPRESS OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
- * IN NO EVENT SHALL ARM LTD BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
- * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
- * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
- * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
- * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
- * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-/* Assumptions:
- *
- * ARMv8-a, AArch64, unaligned accesses.
- */
-
-#include <private/bionic_asm.h>
-
-#define L(l) .L ## l
-
-/* Parameters and result.  */
-#define src1		x0
-#define src2		x1
-#define limit		x2
-#define result		w0
-
-/* Internal variables.  */
-#define data1		x3
-#define data1w		w3
-#define data1h		x4
-#define data2		x5
-#define data2w		w5
-#define data2h		x6
-#define tmp1		x7
-#define tmp2		x8
-
-/* Small inputs of less than 8 bytes are handled separately.  This allows the
-   main code to be speed up using unaligned loads since there are now at least
-   8 bytes to be compared.  If the first 8 bytes are equal, align src1.
-   This ensures each iteration does at most one unaligned access even if both
-   src1 and src2 are unaligned, and mutually aligned inputs behave as if
-   aligned.  After the main loop, process the last 16 bytes using unaligned
-   accesses.  */
-
-ENTRY(memcmp)
-.p2align 6
-	subs	limit, limit, 8
-	b.lo	L(less8)
-
-	/* Limit >= 8, so check first 8 bytes using unaligned loads.  */
-	ldr	data1, [src1], 8
-	ldr	data2, [src2], 8
-	cmp	data1, data2
-	b.ne	L(return)
-
-	subs	limit, limit, 8
-	b.gt	L(more16)
-
-	ldr	data1, [src1, limit]
-	ldr	data2, [src2, limit]
-	b	L(return)
-
-L(more16):
-	ldr	data1, [src1], 8
-	ldr	data2, [src2], 8
-	cmp	data1, data2
-	bne	L(return)
-
-	/* Jump directly to comparing the last 16 bytes for 32 byte (or less)
-	   strings.  */
-	subs	limit, limit, 16
-	b.ls	L(last_bytes)
-
-	/* We overlap loads between 0-32 bytes at either side of SRC1 when we
-	   try to align, so limit it only to strings larger than 128 bytes.  */
-	cmp	limit, 96
-	b.ls	L(loop16)
-
-	/* Align src1 and adjust src2 with bytes not yet done.  */
-	and	tmp1, src1, 15
-	add	limit, limit, tmp1
-	sub	src1, src1, tmp1
-	sub	src2, src2, tmp1
-
-	/* Loop performing 16 bytes per iteration using aligned src1.
-	   Limit is pre-decremented by 16 and must be larger than zero.
-	   Exit if <= 16 bytes left to do or if the data is not equal.  */
-	.p2align 4
-L(loop16):
-	ldp	data1, data1h, [src1], 16
-	ldp	data2, data2h, [src2], 16
-	subs	limit, limit, 16
-	ccmp	data1, data2, 0, hi
-	ccmp	data1h, data2h, 0, eq
-	b.eq	L(loop16)
-
-	cmp	data1, data2
-	bne	L(return)
-	mov	data1, data1h
-	mov	data2, data2h
-	cmp	data1, data2
-	bne	L(return)
-
-	/* Compare last 1-16 bytes using unaligned access.  */
-L(last_bytes):
-	add	src1, src1, limit
-	add	src2, src2, limit
-	ldp	data1, data1h, [src1]
-	ldp	data2, data2h, [src2]
-	cmp     data1, data2
-	bne	L(return)
-	mov	data1, data1h
-	mov	data2, data2h
-	cmp	data1, data2
-
-	/* Compare data bytes and set return value to 0, -1 or 1.  */
-L(return):
-#ifndef __AARCH64EB__
-	rev	data1, data1
-	rev	data2, data2
-#endif
-	cmp     data1, data2
-L(ret_eq):
-	cset	result, ne
-	cneg	result, result, lo
-	ret
-
-	.p2align 4
-	/* Compare up to 8 bytes.  Limit is [-8..-1].  */
-L(less8):
-	adds	limit, limit, 4
-	b.lo	L(less4)
-	ldr	data1w, [src1], 4
-	ldr	data2w, [src2], 4
-	cmp	data1w, data2w
-	b.ne	L(return)
-	sub	limit, limit, 4
-L(less4):
-	adds	limit, limit, 4
-	beq	L(ret_eq)
-L(byte_loop):
-	ldrb	data1w, [src1], 1
-	ldrb	data2w, [src2], 1
-	subs	limit, limit, 1
-	ccmp	data1w, data2w, 0, ne	/* NZCV = 0b0000.  */
-	b.eq	L(byte_loop)
-	sub	result, data1w, data2w
-	ret
-
-END(memcmp)
diff --git a/libc/arch-arm64/generic/bionic/stpcpy.S b/libc/arch-arm64/mte/bionic/stpcpy.S
similarity index 100%
rename from libc/arch-arm64/generic/bionic/stpcpy.S
rename to libc/arch-arm64/mte/bionic/stpcpy.S
diff --git a/libc/arch-arm64/mte/bionic/strchr.cpp b/libc/arch-arm64/mte/bionic/strchrnul.cpp
similarity index 91%
copy from libc/arch-arm64/mte/bionic/strchr.cpp
copy to libc/arch-arm64/mte/bionic/strchrnul.cpp
index 7d394df..4f41a31 100644
--- a/libc/arch-arm64/mte/bionic/strchr.cpp
+++ b/libc/arch-arm64/mte/bionic/strchrnul.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2019 The Android Open Source Project
+ * Copyright (C) 2020 The Android Open Source Project
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -26,5 +26,5 @@
  * SUCH DAMAGE.
  */
 
-#define strchr strchr_mte
-#include <bionic/strchr.cpp>
+#define strchrnul strchrnul_mte
+#include <bionic/strchrnul.cpp>
diff --git a/libc/arch-arm64/generic/bionic/strcpy.S b/libc/arch-arm64/mte/bionic/strcpy.S
similarity index 100%
rename from libc/arch-arm64/generic/bionic/strcpy.S
rename to libc/arch-arm64/mte/bionic/strcpy.S
diff --git a/libc/arch-arm64/generic/bionic/string_copy.S b/libc/arch-arm64/mte/bionic/string_copy.S
similarity index 99%
rename from libc/arch-arm64/generic/bionic/string_copy.S
rename to libc/arch-arm64/mte/bionic/string_copy.S
index 2bf969d..8b0b93a 100644
--- a/libc/arch-arm64/generic/bionic/string_copy.S
+++ b/libc/arch-arm64/mte/bionic/string_copy.S
@@ -97,9 +97,9 @@
 #define REP8_80 0x8080808080808080
 
 #if defined(STPCPY)
-ENTRY(stpcpy)
+ENTRY(stpcpy_mte)
 #elif defined(STRCPY)
-ENTRY(strcpy)
+ENTRY(strcpy_mte)
 #endif
     mov     zeroones, #REP8_01
 #if defined(STRCPY)
diff --git a/libc/arch-arm64/mte/bionic/strlen.c b/libc/arch-arm64/mte/bionic/strlen.c
deleted file mode 100644
index de88320..0000000
--- a/libc/arch-arm64/mte/bionic/strlen.c
+++ /dev/null
@@ -1,32 +0,0 @@
-/*
- * Copyright (C) 2019 The Android Open Source Project
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *  * Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- *  * Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in
- *    the documentation and/or other materials provided with the
- *    distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
- * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
- * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#include <upstream-openbsd/android/include/openbsd-compat.h>
-
-#define strlen strlen_mte
-#include <upstream-openbsd/lib/libc/string/strlen.c>
diff --git a/libc/arch-arm64/mte/bionic/strchr.cpp b/libc/arch-arm64/mte/bionic/strrchr.cpp
similarity index 92%
rename from libc/arch-arm64/mte/bionic/strchr.cpp
rename to libc/arch-arm64/mte/bionic/strrchr.cpp
index 7d394df..3201b61 100644
--- a/libc/arch-arm64/mte/bionic/strchr.cpp
+++ b/libc/arch-arm64/mte/bionic/strrchr.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2019 The Android Open Source Project
+ * Copyright (C) 2020 The Android Open Source Project
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -26,5 +26,5 @@
  * SUCH DAMAGE.
  */
 
-#define strchr strchr_mte
-#include <bionic/strchr.cpp>
+#define strrchr strrchr_mte
+#include <bionic/strrchr.cpp>
diff --git a/libc/arch-arm64/static_function_dispatch.S b/libc/arch-arm64/static_function_dispatch.S
index 8e3a4c1..c89294b 100644
--- a/libc/arch-arm64/static_function_dispatch.S
+++ b/libc/arch-arm64/static_function_dispatch.S
@@ -34,8 +34,12 @@
 END(name)
 
 FUNCTION_DELEGATE(memchr, memchr_mte)
-FUNCTION_DELEGATE(strchr, strchr_mte)
+FUNCTION_DELEGATE(stpcpy, stpcpy_mte)
+FUNCTION_DELEGATE(strchr, __strchr_aarch64_mte)
+FUNCTION_DELEGATE(strchrnul, strchrnul_mte)
 FUNCTION_DELEGATE(strcmp, strcmp_mte)
-FUNCTION_DELEGATE(strlen, strlen_mte)
+FUNCTION_DELEGATE(strcpy, strcpy_mte)
+FUNCTION_DELEGATE(strlen, __strlen_aarch64_mte)
+FUNCTION_DELEGATE(strrchr, strrchr_mte)
 FUNCTION_DELEGATE(strncmp, strncmp_mte)
 FUNCTION_DELEGATE(strnlen, strnlen_mte)
diff --git a/libc/async_safe/Android.bp b/libc/async_safe/Android.bp
index 7df6ab9..98da2cc 100644
--- a/libc/async_safe/Android.bp
+++ b/libc/async_safe/Android.bp
@@ -18,6 +18,15 @@
     export_include_dirs: ["include"],
     export_header_lib_headers: ["liblog_headers"],
     stl: "none",
+
+    apex_available: [
+        "//apex_available:platform",
+        "com.android.runtime",
+        "com.android.art.debug",
+        "com.android.art.release",
+        "com.android.media",
+        "com.android.media.swcodec",
+    ],
 }
 
 cc_library_headers {
@@ -31,4 +40,9 @@
 
     system_shared_libs: [],
     stl: "none",
+
+    apex_available: [
+        "//apex_available:platform",
+        "com.android.runtime",
+    ],
 }
diff --git a/libc/bionic/android_unsafe_frame_pointer_chase.cpp b/libc/bionic/android_unsafe_frame_pointer_chase.cpp
index 0fb086e..e25867b 100644
--- a/libc/bionic/android_unsafe_frame_pointer_chase.cpp
+++ b/libc/bionic/android_unsafe_frame_pointer_chase.cpp
@@ -57,6 +57,12 @@
 
   auto begin = reinterpret_cast<uintptr_t>(__builtin_frame_address(0));
   uintptr_t end = __get_thread()->stack_top;
+
+  stack_t ss;
+  if (sigaltstack(nullptr, &ss) == 0 && (ss.ss_flags & SS_ONSTACK)) {
+    end = reinterpret_cast<uintptr_t>(ss.ss_sp) + ss.ss_size;
+  }
+
   size_t num_frames = 0;
   while (1) {
     auto* frame = reinterpret_cast<frame_record*>(begin);
diff --git a/libc/bionic/ffs.cpp b/libc/bionic/ffs.cpp
index b2270e5..aa7e504 100644
--- a/libc/bionic/ffs.cpp
+++ b/libc/bionic/ffs.cpp
@@ -26,8 +26,5 @@
  * SUCH DAMAGE.
  */
 
+#define __BIONIC_STRINGS_INLINE /* Out of line. */
 #include <strings.h>
-
-int ffs(int x) {
-  return __builtin_ffs(x);
-}
diff --git a/libc/bionic/heap_tagging.cpp b/libc/bionic/heap_tagging.cpp
index 62b5f5c..e5e8ec3 100644
--- a/libc/bionic/heap_tagging.cpp
+++ b/libc/bionic/heap_tagging.cpp
@@ -46,7 +46,8 @@
   // or hardware doesn't support MTE, and we will fall back to just enabling tagged pointers in
   // syscall arguments.
   if (prctl(PR_SET_TAGGED_ADDR_CTRL,
-            PR_TAGGED_ADDR_ENABLE | PR_MTE_TCF_ASYNC | (1 << PR_MTE_EXCL_SHIFT), 0, 0, 0) == 0) {
+            PR_TAGGED_ADDR_ENABLE | PR_MTE_TCF_ASYNC | (0xfffe << PR_MTE_TAG_SHIFT), 0, 0,
+            0) == 0) {
     heap_tagging_level = M_HEAP_TAGGING_LEVEL_ASYNC;
     return;
   }
diff --git a/libc/bionic/system_property_set.cpp b/libc/bionic/system_property_set.cpp
index 56822ac..212aafc 100644
--- a/libc/bionic/system_property_set.cpp
+++ b/libc/bionic/system_property_set.cpp
@@ -209,7 +209,6 @@
       // mostly for ctl.* properties, but we do try and wait 250
       // ms so callers who do read-after-write can reliably see
       // what they've written.  Most of the time.
-      // TODO: fix the system properties design.
       async_safe_format_log(ANDROID_LOG_WARN, "libc",
                             "Property service has timed out while trying to set \"%s\" to \"%s\"",
                             msg->name, msg->value);
diff --git a/libc/bionic/tmpfile.cpp b/libc/bionic/tmpfile.cpp
index 4378e84..d7ce897 100644
--- a/libc/bionic/tmpfile.cpp
+++ b/libc/bionic/tmpfile.cpp
@@ -31,6 +31,7 @@
  */
 
 #include <errno.h>
+#include <fcntl.h>
 #include <signal.h>
 #include <stdio.h>
 #include <stdlib.h>
@@ -39,48 +40,48 @@
 #include <unistd.h>
 
 #include "private/ErrnoRestorer.h"
-#include "private/ScopedSignalBlocker.h"
 
-static FILE* __tmpfile_dir(const char* tmp_dir) {
+static FILE* __fd_to_fp(int fd) {
+  FILE* fp = fdopen(fd, "w+");
+  if (fp != nullptr) return fp;
+
+  ErrnoRestorer errno_restorer;
+  close(fd);
+  return nullptr;
+}
+
+static FILE* __tmpfile_dir_legacy(const char* tmp_dir) {
   char* path = nullptr;
   if (asprintf(&path, "%s/tmp.XXXXXXXXXX", tmp_dir) == -1) {
     return nullptr;
   }
 
-  int fd;
-  {
-    ScopedSignalBlocker ssb;
-    fd = mkstemp(path);
-    if (fd == -1) {
-      free(path);
-      return nullptr;
-    }
-
-    // Unlink the file now so that it's removed when closed.
-    unlink(path);
+  int fd = mkstemp(path);
+  if (fd == -1) {
     free(path);
-
-    // Can we still use the file now it's unlinked?
-    // File systems without hard link support won't have the usual Unix semantics.
-    struct stat sb;
-    int rc = fstat(fd, &sb);
-    if (rc == -1) {
-      ErrnoRestorer errno_restorer;
-      close(fd);
-      return nullptr;
-    }
+    return nullptr;
   }
 
-  // Turn the file descriptor into a FILE*.
-  FILE* fp = fdopen(fd, "w+");
-  if (fp != nullptr) {
-    return fp;
+  // Unlink the file now so that it's removed when closed.
+  unlink(path);
+  free(path);
+
+  // Can we still use the file now it's unlinked?
+  // File systems without hard link support won't have the usual Unix semantics.
+  struct stat sb;
+  if (fstat(fd, &sb) == -1) {
+    ErrnoRestorer errno_restorer;
+    close(fd);
+    return nullptr;
   }
 
-  // Failure. Clean up. We already unlinked, so we just need to close.
-  ErrnoRestorer errno_restorer;
-  close(fd);
-  return nullptr;
+  return __fd_to_fp(fd);
+}
+
+static FILE* __tmpfile_dir(const char* tmp_dir) {
+  int fd = open(tmp_dir, O_TMPFILE | O_RDWR, S_IRUSR | S_IWUSR);
+  if (fd == -1) return __tmpfile_dir_legacy(tmp_dir);
+  return __fd_to_fp(fd);
 }
 
 FILE* tmpfile() {
diff --git a/libc/include/bits/auxvec.h b/libc/include/bits/auxvec.h
index 4d39477..2d6522a 100644
--- a/libc/include/bits/auxvec.h
+++ b/libc/include/bits/auxvec.h
@@ -37,6 +37,14 @@
 
 #include <linux/auxvec.h>
 
+// AT_HWCAP isn't useful without these constants.
+#if __has_include(<asm/hwcap.h>)
+#include <asm/hwcap.h>
+#endif
+#if __has_include(<asm/hwcap2.h>)
+#include <asm/hwcap2.h>
+#endif
+
 /** Historical SuperH cruft. Irrelevant on Android. */
 #define AT_FPUCW 18
 /** Historical PowerPC cruft. Irrelevant on Android. */
diff --git a/libc/include/bits/glibc-syscalls.h b/libc/include/bits/glibc-syscalls.h
index aabcaab..0e3014d 100644
--- a/libc/include/bits/glibc-syscalls.h
+++ b/libc/include/bits/glibc-syscalls.h
@@ -702,6 +702,9 @@
 #if defined(__NR_openat)
   #define SYS_openat __NR_openat
 #endif
+#if defined(__NR_openat2)
+  #define SYS_openat2 __NR_openat2
+#endif
 #if defined(__NR_pause)
   #define SYS_pause __NR_pause
 #endif
@@ -720,6 +723,9 @@
 #if defined(__NR_personality)
   #define SYS_personality __NR_personality
 #endif
+#if defined(__NR_pidfd_getfd)
+  #define SYS_pidfd_getfd __NR_pidfd_getfd
+#endif
 #if defined(__NR_pidfd_open)
   #define SYS_pidfd_open __NR_pidfd_open
 #endif
diff --git a/libc/include/bits/stdatomic.h b/libc/include/bits/stdatomic.h
index 633cb86..2ce6ee6 100644
--- a/libc/include/bits/stdatomic.h
+++ b/libc/include/bits/stdatomic.h
@@ -41,7 +41,7 @@
  */
 
 #include <stddef.h>  /* For ptrdiff_t. */
-#include <stdint.h>  /* TODO: don't drag in all the macros, just the types. */
+#include <stdint.h>
 // Include uchar.h only when available.  Bionic's stdatomic.h is also used for
 // the host (via a copy in prebuilts/clang) and uchar.h is not available in the
 // glibc used for the host.
diff --git a/libc/include/dirent.h b/libc/include/dirent.h
index d6819f2..2328b1a 100644
--- a/libc/include/dirent.h
+++ b/libc/include/dirent.h
@@ -26,8 +26,12 @@
  * SUCH DAMAGE.
  */
 
-#ifndef _DIRENT_H_
-#define _DIRENT_H_
+#pragma once
+
+/**
+ * @file dirent.h
+ * @brief Directory entry iteration.
+ */
 
 #include <stdint.h>
 #include <sys/cdefs.h>
@@ -35,17 +39,23 @@
 
 __BEGIN_DECLS
 
-#ifndef DT_UNKNOWN
+/** d_type value when the type is not known. */
 #define DT_UNKNOWN 0
+/** d_type value for a FIFO. */
 #define DT_FIFO 1
+/** d_type value for a character device. */
 #define DT_CHR 2
+/** d_type value for a directory. */
 #define DT_DIR 4
+/** d_type value for a block device. */
 #define DT_BLK 6
+/** d_type value for a regular file. */
 #define DT_REG 8
+/** d_type value for a symbolic link. */
 #define DT_LNK 10
+/** d_type value for a socket. */
 #define DT_SOCK 12
 #define DT_WHT 14
-#endif
 
 #if defined(__LP64__)
 #define __DIRENT64_INO_T ino_t
@@ -60,7 +70,9 @@
     unsigned char d_type; \
     char d_name[256]; \
 
+/** The structure returned by readdir(). Identical to dirent64 on Android. */
 struct dirent { __DIRENT64_BODY };
+/** The structure returned by readdir64(). Identical to dirent on Android. */
 struct dirent64 { __DIRENT64_BODY };
 
 #undef __DIRENT64_BODY
@@ -74,29 +86,158 @@
 
 #define d_fileno d_ino
 
+/** The structure returned by opendir()/fopendir(). */
 typedef struct DIR DIR;
 
+/**
+ * [opendir(3)](http://man7.org/linux/man-pages/man3/opendir.3.html)
+ * opens a directory stream for the directory at `__path`.
+ *
+ * Returns null and sets `errno` on failure.
+ */
 DIR* opendir(const char* __path);
+
+/**
+ * [fopendir(3)](http://man7.org/linux/man-pages/man3/opendir.3.html)
+ * opens a directory stream for the directory at `__dir_fd`.
+ *
+ * Returns null and sets `errno` on failure.
+ */
 DIR* fdopendir(int __dir_fd);
+
+/**
+ * [readdir(3)](http://man7.org/linux/man-pages/man3/readdir.3.html)
+ * returns the next directory entry in the given directory.
+ *
+ * Returns a pointer to a directory entry on success,
+ * or returns null and leaves `errno` unchanged at the end of the directory,
+ * or returns null and sets `errno` on failure.
+ */
 struct dirent* readdir(DIR* __dir);
+
+/**
+ * [readdir64(3)](http://man7.org/linux/man-pages/man3/readdir.3.html)
+ * returns the next directory entry in the given directory.
+ *
+ * Returns a pointer to a directory entry on success,
+ * or returns null and leaves `errno` unchanged at the end of the directory,
+ * or returns null and sets `errno` on failure.
+ */
 struct dirent64* readdir64(DIR* __dir) __INTRODUCED_IN(21);
+
 int readdir_r(DIR* __dir, struct dirent* __entry, struct dirent** __buffer) __attribute__((__deprecated__("readdir_r is deprecated; use readdir instead")));
 int readdir64_r(DIR* __dir, struct dirent64* __entry, struct dirent64** __buffer) __INTRODUCED_IN(21) __attribute__((__deprecated__("readdir64_r is deprecated; use readdir64 instead")));
+
+/**
+ * [closedir(3)](http://man7.org/linux/man-pages/man3/closedir.3.html)
+ * closes a directory stream.
+ *
+ * Returns 0 on success and returns -1 and sets `errno` on failure.
+ */
 int closedir(DIR* __dir);
+
+/**
+ * [rewinddir(3)](http://man7.org/linux/man-pages/man3/rewinddir.3.html)
+ * rewinds a directory stream to the first entry.
+ */
 void rewinddir(DIR* __dir);
+
+/**
+ * [seekdir(3)](http://man7.org/linux/man-pages/man3/seekdir.3.html)
+ * seeks a directory stream to the given entry, which must be a value returned
+ * by telldir().
+ *
+ * Available since API level 23.
+ */
 void seekdir(DIR* __dir, long __location) __INTRODUCED_IN(23);
+
+/**
+ * [telldir(3)](http://man7.org/linux/man-pages/man3/telldir.3.html)
+ * returns a value representing the current position in the directory
+ * for use with seekdir().
+ *
+ * Returns the current position on success and returns -1 and sets `errno` on failure.
+ *
+ * Available since API level 23.
+ */
 long telldir(DIR* __dir) __INTRODUCED_IN(23);
+
+/**
+ * [dirfd(3)](http://man7.org/linux/man-pages/man3/dirfd.3.html)
+ * returns the file descriptor backing the given directory stream.
+ *
+ * Returns a file descriptor on success and returns -1 and sets `errno` on failure.
+ */
 int dirfd(DIR* __dir);
+
+/**
+ * [alphasort](http://man7.org/linux/man-pages/man3/alphasort.3.html) is a
+ * comparator for use with scandir() that uses strcoll().
+ */
 int alphasort(const struct dirent** __lhs, const struct dirent** __rhs);
+
+/**
+ * [alphasort64](http://man7.org/linux/man-pages/man3/alphasort.3.html) is a
+ * comparator for use with scandir64() that uses strcmp().
+ *
+ * Available since API level 21.
+ */
 int alphasort64(const struct dirent64** __lhs, const struct dirent64** __rhs) __INTRODUCED_IN(21);
-int scandir64(const char* __path, struct dirent64*** __name_list, int (*__filter)(const struct dirent64*), int (*__comparator)(const struct dirent64**, const struct dirent64**)) __INTRODUCED_IN(21);
+
+/**
+ * [scandir(3)](http://man7.org/linux/man-pages/man3/scandir.3.html)
+ * scans all the directory `__path`, filtering entries with `__filter` and
+ * sorting them with qsort() using the given `__comparator`, and storing them
+ * into `__name_list`. Passing NULL as the filter accepts all entries.
+ *
+ * Returns the number of entries returned in the list on success,
+ * and returns -1 and sets `errno` on failure.
+ */
 int scandir(const char* __path, struct dirent*** __name_list, int (*__filter)(const struct dirent*), int (*__comparator)(const struct dirent**, const struct dirent**));
 
+/**
+ * [scandir64(3)](http://man7.org/linux/man-pages/man3/scandir.3.html)
+ * scans all the directory `__path`, filtering entries with `__filter` and
+ * sorting them with qsort() using the given `__comparator`, and storing them
+ * into `__name_list`. Passing NULL as the filter accepts all entries.
+ *
+ * Returns the number of entries returned in the list on success,
+ * and returns -1 and sets `errno` on failure.
+ *
+ * Available since API level 21.
+ */
+int scandir64(const char* __path, struct dirent64*** __name_list, int (*__filter)(const struct dirent64*), int (*__comparator)(const struct dirent64**, const struct dirent64**)) __INTRODUCED_IN(21);
+
 #if defined(__USE_GNU)
+
+/**
+ * [scandirat64(3)](http://man7.org/linux/man-pages/man3/scandirat.3.html)
+ * scans all the directory referenced by the pair of `__dir_fd` and `__path`,
+ * filtering entries with `__filter` and sorting them with qsort() using the
+ * given `__comparator`, and storing them into `__name_list`. Passing NULL as
+ * the filter accepts all entries.
+ *
+ * Returns the number of entries returned in the list on success,
+ * and returns -1 and sets `errno` on failure.
+ *
+ * Available since API level 24.
+ */
 int scandirat64(int __dir_fd, const char* __path, struct dirent64*** __name_list, int (*__filter)(const struct dirent64*), int (*__comparator)(const struct dirent64**, const struct dirent64**)) __INTRODUCED_IN(24);
+
+/**
+ * [scandirat(3)](http://man7.org/linux/man-pages/man3/scandirat.3.html)
+ * scans all the directory referenced by the pair of `__dir_fd` and `__path`,
+ * filtering entries with `__filter` and sorting them with qsort() using the
+ * given `__comparator`, and storing them into `__name_list`. Passing NULL as
+ * the filter accepts all entries.
+ *
+ * Returns the number of entries returned in the list on success,
+ * and returns -1 and sets `errno` on failure.
+ *
+ * Available since API level 24.
+ */
 int scandirat(int __dir_fd, const char* __path, struct dirent*** __name_list, int (*__filter)(const struct dirent*), int (*__comparator)(const struct dirent**, const struct dirent**)) __INTRODUCED_IN(24);
+
 #endif
 
 __END_DECLS
-
-#endif
diff --git a/libc/include/strings.h b/libc/include/strings.h
index 08c2326..ba69c8d 100644
--- a/libc/include/strings.h
+++ b/libc/include/strings.h
@@ -49,6 +49,10 @@
 
 #include <bits/strcasecmp.h>
 
+#if !defined(__BIONIC_STRINGS_INLINE)
+#define __BIONIC_STRINGS_INLINE static __inline
+#endif
+
 __BEGIN_DECLS
 
 /** Deprecated. Use memmove() instead. */
@@ -63,19 +67,41 @@
   __builtin_memset(b, 0, len);
 }
 
-#if !defined(__i386__) || __ANDROID_API__ >= 18
 /**
- * [ffs(3)](http://man7.org/linux/man-pages/man3/ffs.3.html) finds the first set bit in `__i`.
+ * [ffs(3)](http://man7.org/linux/man-pages/man3/ffs.3.html) finds the
+ * first set bit in `__n`.
  *
- * Returns 0 if no bit is set, or the index of the lowest set bit (counting from 1) otherwise.
+ * Returns 0 if no bit is set, or the index of the lowest set bit (counting
+ * from 1) otherwise.
  */
-int ffs(int __i) __INTRODUCED_IN_X86(18);
-#endif
+__BIONIC_STRINGS_INLINE int ffs(int __n) {
+  return __builtin_ffs(__n);
+}
+
+/**
+ * [ffsl(3)](http://man7.org/linux/man-pages/man3/ffsl.3.html) finds the
+ * first set bit in `__n`.
+ *
+ * Returns 0 if no bit is set, or the index of the lowest set bit (counting
+ * from 1) otherwise.
+ */
+__BIONIC_STRINGS_INLINE int ffsl(long __n) {
+  return __builtin_ffsl(__n);
+}
+
+/**
+ * [ffsll(3)](http://man7.org/linux/man-pages/man3/ffsll.3.html) finds the
+ * first set bit in `__n`.
+ *
+ * Returns 0 if no bit is set, or the index of the lowest set bit (counting
+ * from 1) otherwise.
+ */
+__BIONIC_STRINGS_INLINE int ffsll(long long __n) {
+  return __builtin_ffsll(__n);
+}
 
 #if defined(__BIONIC_INCLUDE_FORTIFY_HEADERS)
 #include <bits/fortify/strings.h>
 #endif
 
 __END_DECLS
-
-#include <android/legacy_strings_inlines.h>
diff --git a/libc/include/sys/auxv.h b/libc/include/sys/auxv.h
index c651940..bf70dda 100644
--- a/libc/include/sys/auxv.h
+++ b/libc/include/sys/auxv.h
@@ -40,7 +40,7 @@
 __BEGIN_DECLS
 
 /**
- * [getauxval(3)](http://man7.org/linux/man-pages/man2/personality.2.html) returns values from
+ * [getauxval(3)](http://man7.org/linux/man-pages/man3/getauxval.3.html) returns values from
  * the ELF auxiliary vector passed by the kernel.
  *
  * Returns the corresponding value on success,
diff --git a/libc/kernel/tools/clean_header.py b/libc/kernel/tools/clean_header.py
index 92a2139..2c2d001 100755
--- a/libc/kernel/tools/clean_header.py
+++ b/libc/kernel/tools/clean_header.py
@@ -112,6 +112,7 @@
     if arch and arch in kernel_arch_token_replacements:
         blocks.replaceTokens(kernel_arch_token_replacements[arch])
 
+    blocks.removeStructs(kernel_structs_to_remove)
     blocks.optimizeMacros(macros)
     blocks.optimizeIf01()
     blocks.removeVarsAndFuncs(kernel_known_generic_statics)
diff --git a/libc/kernel/tools/cpp.py b/libc/kernel/tools/cpp.py
index 1ada59e..b6a1538 100755
--- a/libc/kernel/tools/cpp.py
+++ b/libc/kernel/tools/cpp.py
@@ -30,10 +30,7 @@
 # Note that setting LD_LIBRARY_PATH with os.putenv() sometimes doesn't help.
 clang.cindex.Config.set_library_file(os.path.join(top, 'prebuilts/sdk/tools/linux/lib64/libclang_android.so'))
 
-from defaults import kCppUndefinedMacro
-from defaults import kernel_remove_config_macros
-from defaults import kernel_struct_replacements
-from defaults import kernel_token_replacements
+from defaults import *
 
 
 debugBlockParser = False
@@ -1198,6 +1195,52 @@
             if b.isIf():
                 b.expr.optimize(macros)
 
+    def removeStructs(self, structs):
+        """Remove structs."""
+        for b in self.blocks:
+            # Have to look in each block for a top-level struct definition.
+            if b.directive:
+                continue
+            num_tokens = len(b.tokens)
+            # A struct definition has at least 5 tokens:
+            #   struct
+            #   ident
+            #   {
+            #   }
+            #   ;
+            if num_tokens < 5:
+                continue
+            # This is a simple struct finder, it might fail if a top-level
+            # structure has an #if type directives that confuses the algorithm
+            # for finding th end of the structure. Or if there is another
+            # structure definition embedded in the structure.
+            i = 0
+            while i < num_tokens - 2:
+                if (b.tokens[i].kind != TokenKind.KEYWORD or
+                    b.tokens[i].id != "struct"):
+                    i += 1
+                    continue
+                if (b.tokens[i + 1].kind == TokenKind.IDENTIFIER and
+                    b.tokens[i + 2].kind == TokenKind.PUNCTUATION and
+                    b.tokens[i + 2].id == "{" and b.tokens[i + 1].id in structs):
+                    # Search forward for the end of the structure.
+                    # Very simple search, look for } and ; tokens. If something
+                    # more complicated is needed we can add it later.
+                    j = i + 3
+                    while j < num_tokens - 1:
+                        if (b.tokens[j].kind == TokenKind.PUNCTUATION and
+                            b.tokens[j].id == "}" and
+                            b.tokens[j + 1].kind == TokenKind.PUNCTUATION and
+                            b.tokens[j + 1].id == ";"):
+                            b.tokens = b.tokens[0:i] + b.tokens[j + 2:num_tokens]
+                            num_tokens = len(b.tokens)
+                            j = i
+                            break
+                        j += 1
+                    i = j
+                    continue
+                i += 1
+
     def optimizeAll(self, macros):
         self.optimizeMacros(macros)
         self.optimizeIf01()
@@ -1755,7 +1798,6 @@
     def parse(self, text, macros=None):
         out = utils.StringOutput()
         blocks = BlockParser().parse(CppStringTokenizer(text))
-        blocks.replaceTokens(kernel_token_replacements)
         blocks.optimizeAll(macros)
         blocks.write(out)
         return out.get()
@@ -1931,8 +1973,8 @@
 #endif /* SIGRTMAX */
 """
         expected = """\
-#ifndef __SIGRTMAX
-#define __SIGRTMAX 123
+#ifndef SIGRTMAX
+#define SIGRTMAX 123
 #endif
 """
         self.assertEqual(self.parse(text), expected)
@@ -1948,6 +1990,146 @@
         expected = ""
         self.assertEqual(self.parse(text), expected)
 
+class RemoveStructsTests(unittest.TestCase):
+    def parse(self, text, structs):
+        out = utils.StringOutput()
+        blocks = BlockParser().parse(CppStringTokenizer(text))
+        blocks.removeStructs(structs)
+        blocks.write(out)
+        return out.get()
+
+    def test_remove_struct_from_start(self):
+        text = """\
+struct remove {
+  int val1;
+  int val2;
+};
+struct something {
+  struct timeval val1;
+  struct timeval val2;
+};
+"""
+        expected = """\
+struct something {
+  struct timeval val1;
+  struct timeval val2;
+};
+"""
+        self.assertEqual(self.parse(text, set(["remove"])), expected)
+
+    def test_remove_struct_from_end(self):
+        text = """\
+struct something {
+  struct timeval val1;
+  struct timeval val2;
+};
+struct remove {
+  int val1;
+  int val2;
+};
+"""
+        expected = """\
+struct something {
+  struct timeval val1;
+  struct timeval val2;
+};
+"""
+        self.assertEqual(self.parse(text, set(["remove"])), expected)
+
+    def test_remove_minimal_struct(self):
+        text = """\
+struct remove {
+};
+"""
+        expected = "";
+        self.assertEqual(self.parse(text, set(["remove"])), expected)
+
+    def test_remove_struct_with_struct_fields(self):
+        text = """\
+struct something {
+  struct remove val1;
+  struct remove val2;
+};
+struct remove {
+  int val1;
+  struct something val3;
+  int val2;
+};
+"""
+        expected = """\
+struct something {
+  struct remove val1;
+  struct remove val2;
+};
+"""
+        self.assertEqual(self.parse(text, set(["remove"])), expected)
+
+    def test_remove_consecutive_structs(self):
+        text = """\
+struct keep1 {
+  struct timeval val1;
+  struct timeval val2;
+};
+struct remove1 {
+  int val1;
+  int val2;
+};
+struct remove2 {
+  int val1;
+  int val2;
+  int val3;
+};
+struct keep2 {
+  struct timeval val1;
+  struct timeval val2;
+};
+"""
+        expected = """\
+struct keep1 {
+  struct timeval val1;
+  struct timeval val2;
+};
+struct keep2 {
+  struct timeval val1;
+  struct timeval val2;
+};
+"""
+        self.assertEqual(self.parse(text, set(["remove1", "remove2"])), expected)
+
+    def test_remove_multiple_structs(self):
+        text = """\
+struct keep1 {
+  int val;
+};
+struct remove1 {
+  int val1;
+  int val2;
+};
+struct keep2 {
+  int val;
+};
+struct remove2 {
+  struct timeval val1;
+  struct timeval val2;
+};
+struct keep3 {
+  int val;
+};
+"""
+        expected = """\
+struct keep1 {
+  int val;
+};
+struct keep2 {
+  int val;
+};
+struct keep3 {
+  int val;
+};
+"""
+        self.assertEqual(self.parse(text, set(["remove1", "remove2"])), expected)
+
+
 class FullPathTest(unittest.TestCase):
     """Test of the full path parsing."""
 
@@ -1956,9 +2138,12 @@
             keep = set()
         out = utils.StringOutput()
         blocks = BlockParser().parse(CppStringTokenizer(text))
+
+        blocks.removeStructs(kernel_structs_to_remove)
         blocks.removeVarsAndFuncs(keep)
         blocks.replaceTokens(kernel_token_replacements)
         blocks.optimizeAll(None)
+
         blocks.write(out)
         return out.get()
 
@@ -2241,6 +2426,38 @@
 """
         self.assertEqual(self.parse(text), expected)
 
+    def test_verify_timeval_itemerval(self):
+        text = """\
+struct __kernel_old_timeval {
+  struct something val;
+};
+struct __kernel_old_itimerval {
+  struct __kernel_old_timeval val;
+};
+struct fields {
+  struct __kernel_old_timeval timeval;
+  struct __kernel_old_itimerval itimerval;
+};
+"""
+        expected = """\
+struct fields {
+  struct timeval timeval;
+  struct itimerval itimerval;
+};
+"""
+        self.assertEqual(self.parse(text), expected)
+
+    def test_token_replacement(self):
+        text = """\
+#define SIGRTMIN 32
+#define SIGRTMAX _NSIG
+"""
+        expected = """\
+#define __SIGRTMIN 32
+#define __SIGRTMAX _KERNEL__NSIG
+"""
+        self.assertEqual(self.parse(text), expected)
+
 
 if __name__ == '__main__':
     unittest.main()
diff --git a/libc/kernel/tools/defaults.py b/libc/kernel/tools/defaults.py
index 90b56f5..04eb5f1 100644
--- a/libc/kernel/tools/defaults.py
+++ b/libc/kernel/tools/defaults.py
@@ -35,6 +35,17 @@
     "__kernel_old_timeval": "1",
     }
 
+# this is the set of known kernel data structures we want to remove from
+# the final headers
+kernel_structs_to_remove = set(
+        [
+          # Remove the structures since they are still the same as
+          # timeval, itimerval.
+          "__kernel_old_timeval",
+          "__kernel_old_itimerval",
+        ]
+    )
+
 # define to true if you want to remove all defined(CONFIG_FOO) tests
 # from the clean headers. testing shows that this is not strictly necessary
 # but just generates cleaner results
@@ -86,6 +97,8 @@
     # If struct __kernel_old_timeval and struct timeval become different,
     # then a different solution needs to be implemented.
     "__kernel_old_timeval": "timeval",
+    # Do the same for __kernel_old_itimerval as for timeval.
+    "__kernel_old_itimerval": "itimerval",
     }
 
 
diff --git a/libc/kernel/uapi/asm-arm/asm/unistd-common.h b/libc/kernel/uapi/asm-arm/asm/unistd-common.h
index 091bd74..261328e 100644
--- a/libc/kernel/uapi/asm-arm/asm/unistd-common.h
+++ b/libc/kernel/uapi/asm-arm/asm/unistd-common.h
@@ -407,4 +407,6 @@
 #define __NR_fspick (__NR_SYSCALL_BASE + 433)
 #define __NR_pidfd_open (__NR_SYSCALL_BASE + 434)
 #define __NR_clone3 (__NR_SYSCALL_BASE + 435)
+#define __NR_openat2 (__NR_SYSCALL_BASE + 437)
+#define __NR_pidfd_getfd (__NR_SYSCALL_BASE + 438)
 #endif
diff --git a/libc/kernel/uapi/asm-arm64/asm/hwcap.h b/libc/kernel/uapi/asm-arm64/asm/hwcap.h
index 8a38ab7..ebe2fa4 100644
--- a/libc/kernel/uapi/asm-arm64/asm/hwcap.h
+++ b/libc/kernel/uapi/asm-arm64/asm/hwcap.h
@@ -59,4 +59,12 @@
 #define HWCAP2_SVESM4 (1 << 6)
 #define HWCAP2_FLAGM2 (1 << 7)
 #define HWCAP2_FRINT (1 << 8)
+#define HWCAP2_SVEI8MM (1 << 9)
+#define HWCAP2_SVEF32MM (1 << 10)
+#define HWCAP2_SVEF64MM (1 << 11)
+#define HWCAP2_SVEBF16 (1 << 12)
+#define HWCAP2_I8MM (1 << 13)
+#define HWCAP2_BF16 (1 << 14)
+#define HWCAP2_DGH (1 << 15)
+#define HWCAP2_RNG (1 << 16)
 #endif
diff --git a/libc/kernel/uapi/asm-arm64/asm/kvm.h b/libc/kernel/uapi/asm-arm64/asm/kvm.h
index efe1a9c..7c64817 100644
--- a/libc/kernel/uapi/asm-arm64/asm/kvm.h
+++ b/libc/kernel/uapi/asm-arm64/asm/kvm.h
@@ -137,8 +137,8 @@
 #define KVM_REG_ARM_PTIMER_CVAL ARM64_SYS_REG(3, 3, 14, 2, 2)
 #define KVM_REG_ARM_PTIMER_CNT ARM64_SYS_REG(3, 3, 14, 0, 1)
 #define KVM_REG_ARM_TIMER_CTL ARM64_SYS_REG(3, 3, 14, 3, 1)
-#define KVM_REG_ARM_TIMER_CNT ARM64_SYS_REG(3, 3, 14, 3, 2)
 #define KVM_REG_ARM_TIMER_CVAL ARM64_SYS_REG(3, 3, 14, 0, 2)
+#define KVM_REG_ARM_TIMER_CNT ARM64_SYS_REG(3, 3, 14, 3, 2)
 #define KVM_REG_ARM_FW (0x0014 << KVM_REG_ARM_COPROC_SHIFT)
 #define KVM_REG_ARM_FW_REG(r) (KVM_REG_ARM64 | KVM_REG_SIZE_U64 | KVM_REG_ARM_FW | ((r) & 0xffff))
 #define KVM_REG_ARM_PSCI_VERSION KVM_REG_ARM_FW_REG(0)
diff --git a/libc/kernel/uapi/asm-arm64/asm/ptrace.h b/libc/kernel/uapi/asm-arm64/asm/ptrace.h
index b3e0aea..23ab407 100644
--- a/libc/kernel/uapi/asm-arm64/asm/ptrace.h
+++ b/libc/kernel/uapi/asm-arm64/asm/ptrace.h
@@ -37,6 +37,7 @@
 #define PSR_SSBS_BIT 0x00001000
 #define PSR_PAN_BIT 0x00400000
 #define PSR_UAO_BIT 0x00800000
+#define PSR_DIT_BIT 0x01000000
 #define PSR_V_BIT 0x10000000
 #define PSR_C_BIT 0x20000000
 #define PSR_Z_BIT 0x40000000
diff --git a/libc/kernel/uapi/asm-generic/unistd.h b/libc/kernel/uapi/asm-generic/unistd.h
index 2128ff5..1b85b30 100644
--- a/libc/kernel/uapi/asm-generic/unistd.h
+++ b/libc/kernel/uapi/asm-generic/unistd.h
@@ -396,8 +396,10 @@
 #ifdef __ARCH_WANT_SYS_CLONE3
 #define __NR_clone3 435
 #endif
+#define __NR_openat2 437
+#define __NR_pidfd_getfd 438
 #undef __NR_syscalls
-#define __NR_syscalls 436
+#define __NR_syscalls 439
 #if __BITS_PER_LONG == 64 && !defined(__SYSCALL_COMPAT)
 #define __NR_fcntl __NR3264_fcntl
 #define __NR_statfs __NR3264_statfs
diff --git a/libc/kernel/uapi/asm-x86/asm/kvm.h b/libc/kernel/uapi/asm-x86/asm/kvm.h
index d4865fb..1e88a69 100644
--- a/libc/kernel/uapi/asm-x86/asm/kvm.h
+++ b/libc/kernel/uapi/asm-x86/asm/kvm.h
@@ -324,6 +324,7 @@
 #define KVM_STATE_NESTED_GUEST_MODE 0x00000001
 #define KVM_STATE_NESTED_RUN_PENDING 0x00000002
 #define KVM_STATE_NESTED_EVMCS 0x00000004
+#define KVM_STATE_NESTED_MTF_PENDING 0x00000008
 #define KVM_STATE_NESTED_SMM_GUEST_MODE 0x00000001
 #define KVM_STATE_NESTED_SMM_VMXON 0x00000002
 #define KVM_STATE_NESTED_VMX_VMCS_SIZE 0x1000
diff --git a/libc/kernel/uapi/asm-x86/asm/unistd_32.h b/libc/kernel/uapi/asm-x86/asm/unistd_32.h
index 06e4a01..bbb0a6c 100644
--- a/libc/kernel/uapi/asm-x86/asm/unistd_32.h
+++ b/libc/kernel/uapi/asm-x86/asm/unistd_32.h
@@ -443,4 +443,6 @@
 #define __NR_fspick 433
 #define __NR_pidfd_open 434
 #define __NR_clone3 435
+#define __NR_openat2 437
+#define __NR_pidfd_getfd 438
 #endif
diff --git a/libc/kernel/uapi/asm-x86/asm/unistd_64.h b/libc/kernel/uapi/asm-x86/asm/unistd_64.h
index bcb6eae..6a59d78 100644
--- a/libc/kernel/uapi/asm-x86/asm/unistd_64.h
+++ b/libc/kernel/uapi/asm-x86/asm/unistd_64.h
@@ -365,4 +365,6 @@
 #define __NR_fspick 433
 #define __NR_pidfd_open 434
 #define __NR_clone3 435
+#define __NR_openat2 437
+#define __NR_pidfd_getfd 438
 #endif
diff --git a/libc/kernel/uapi/asm-x86/asm/unistd_x32.h b/libc/kernel/uapi/asm-x86/asm/unistd_x32.h
index 3357bd1..e674447 100644
--- a/libc/kernel/uapi/asm-x86/asm/unistd_x32.h
+++ b/libc/kernel/uapi/asm-x86/asm/unistd_x32.h
@@ -318,6 +318,8 @@
 #define __NR_fspick (__X32_SYSCALL_BIT + 433)
 #define __NR_pidfd_open (__X32_SYSCALL_BIT + 434)
 #define __NR_clone3 (__X32_SYSCALL_BIT + 435)
+#define __NR_openat2 (__X32_SYSCALL_BIT + 437)
+#define __NR_pidfd_getfd (__X32_SYSCALL_BIT + 438)
 #define __NR_rt_sigaction (__X32_SYSCALL_BIT + 512)
 #define __NR_rt_sigreturn (__X32_SYSCALL_BIT + 513)
 #define __NR_ioctl (__X32_SYSCALL_BIT + 514)
diff --git a/libc/kernel/uapi/asm-x86/asm/vmx.h b/libc/kernel/uapi/asm-x86/asm/vmx.h
index e218d0d..a0c748d 100644
--- a/libc/kernel/uapi/asm-x86/asm/vmx.h
+++ b/libc/kernel/uapi/asm-x86/asm/vmx.h
@@ -23,7 +23,7 @@
 #define EXIT_REASON_EXTERNAL_INTERRUPT 1
 #define EXIT_REASON_TRIPLE_FAULT 2
 #define EXIT_REASON_INIT_SIGNAL 3
-#define EXIT_REASON_PENDING_INTERRUPT 7
+#define EXIT_REASON_INTERRUPT_WINDOW 7
 #define EXIT_REASON_NMI_WINDOW 8
 #define EXIT_REASON_TASK_SWITCH 9
 #define EXIT_REASON_CPUID 10
@@ -78,7 +78,7 @@
 #define EXIT_REASON_XRSTORS 64
 #define EXIT_REASON_UMWAIT 67
 #define EXIT_REASON_TPAUSE 68
-#define VMX_EXIT_REASONS { EXIT_REASON_EXCEPTION_NMI, "EXCEPTION_NMI" }, { EXIT_REASON_EXTERNAL_INTERRUPT, "EXTERNAL_INTERRUPT" }, { EXIT_REASON_TRIPLE_FAULT, "TRIPLE_FAULT" }, { EXIT_REASON_INIT_SIGNAL, "INIT_SIGNAL" }, { EXIT_REASON_PENDING_INTERRUPT, "PENDING_INTERRUPT" }, { EXIT_REASON_NMI_WINDOW, "NMI_WINDOW" }, { EXIT_REASON_TASK_SWITCH, "TASK_SWITCH" }, { EXIT_REASON_CPUID, "CPUID" }, { EXIT_REASON_HLT, "HLT" }, { EXIT_REASON_INVD, "INVD" }, { EXIT_REASON_INVLPG, "INVLPG" }, { EXIT_REASON_RDPMC, "RDPMC" }, { EXIT_REASON_RDTSC, "RDTSC" }, { EXIT_REASON_VMCALL, "VMCALL" }, { EXIT_REASON_VMCLEAR, "VMCLEAR" }, { EXIT_REASON_VMLAUNCH, "VMLAUNCH" }, { EXIT_REASON_VMPTRLD, "VMPTRLD" }, { EXIT_REASON_VMPTRST, "VMPTRST" }, { EXIT_REASON_VMREAD, "VMREAD" }, { EXIT_REASON_VMRESUME, "VMRESUME" }, { EXIT_REASON_VMWRITE, "VMWRITE" }, { EXIT_REASON_VMOFF, "VMOFF" }, { EXIT_REASON_VMON, "VMON" }, { EXIT_REASON_CR_ACCESS, "CR_ACCESS" }, { EXIT_REASON_DR_ACCESS, "DR_ACCESS" }, { EXIT_REASON_IO_INSTRUCTION, "IO_INSTRUCTION" }, { EXIT_REASON_MSR_READ, "MSR_READ" }, { EXIT_REASON_MSR_WRITE, "MSR_WRITE" }, { EXIT_REASON_INVALID_STATE, "INVALID_STATE" }, { EXIT_REASON_MSR_LOAD_FAIL, "MSR_LOAD_FAIL" }, { EXIT_REASON_MWAIT_INSTRUCTION, "MWAIT_INSTRUCTION" }, { EXIT_REASON_MONITOR_TRAP_FLAG, "MONITOR_TRAP_FLAG" }, { EXIT_REASON_MONITOR_INSTRUCTION, "MONITOR_INSTRUCTION" }, { EXIT_REASON_PAUSE_INSTRUCTION, "PAUSE_INSTRUCTION" }, { EXIT_REASON_MCE_DURING_VMENTRY, "MCE_DURING_VMENTRY" }, { EXIT_REASON_TPR_BELOW_THRESHOLD, "TPR_BELOW_THRESHOLD" }, { EXIT_REASON_APIC_ACCESS, "APIC_ACCESS" }, { EXIT_REASON_EOI_INDUCED, "EOI_INDUCED" }, { EXIT_REASON_GDTR_IDTR, "GDTR_IDTR" }, { EXIT_REASON_LDTR_TR, "LDTR_TR" }, { EXIT_REASON_EPT_VIOLATION, "EPT_VIOLATION" }, { EXIT_REASON_EPT_MISCONFIG, "EPT_MISCONFIG" }, { EXIT_REASON_INVEPT, "INVEPT" }, { EXIT_REASON_RDTSCP, "RDTSCP" }, { EXIT_REASON_PREEMPTION_TIMER, "PREEMPTION_TIMER" }, { EXIT_REASON_INVVPID, "INVVPID" }, { EXIT_REASON_WBINVD, "WBINVD" }, { EXIT_REASON_XSETBV, "XSETBV" }, { EXIT_REASON_APIC_WRITE, "APIC_WRITE" }, { EXIT_REASON_RDRAND, "RDRAND" }, { EXIT_REASON_INVPCID, "INVPCID" }, { EXIT_REASON_VMFUNC, "VMFUNC" }, { EXIT_REASON_ENCLS, "ENCLS" }, { EXIT_REASON_RDSEED, "RDSEED" }, { EXIT_REASON_PML_FULL, "PML_FULL" }, { EXIT_REASON_XSAVES, "XSAVES" }, { EXIT_REASON_XRSTORS, "XRSTORS" }, { EXIT_REASON_UMWAIT, "UMWAIT" }, { EXIT_REASON_TPAUSE, "TPAUSE" }
+#define VMX_EXIT_REASONS { EXIT_REASON_EXCEPTION_NMI, "EXCEPTION_NMI" }, { EXIT_REASON_EXTERNAL_INTERRUPT, "EXTERNAL_INTERRUPT" }, { EXIT_REASON_TRIPLE_FAULT, "TRIPLE_FAULT" }, { EXIT_REASON_INIT_SIGNAL, "INIT_SIGNAL" }, { EXIT_REASON_INTERRUPT_WINDOW, "INTERRUPT_WINDOW" }, { EXIT_REASON_NMI_WINDOW, "NMI_WINDOW" }, { EXIT_REASON_TASK_SWITCH, "TASK_SWITCH" }, { EXIT_REASON_CPUID, "CPUID" }, { EXIT_REASON_HLT, "HLT" }, { EXIT_REASON_INVD, "INVD" }, { EXIT_REASON_INVLPG, "INVLPG" }, { EXIT_REASON_RDPMC, "RDPMC" }, { EXIT_REASON_RDTSC, "RDTSC" }, { EXIT_REASON_VMCALL, "VMCALL" }, { EXIT_REASON_VMCLEAR, "VMCLEAR" }, { EXIT_REASON_VMLAUNCH, "VMLAUNCH" }, { EXIT_REASON_VMPTRLD, "VMPTRLD" }, { EXIT_REASON_VMPTRST, "VMPTRST" }, { EXIT_REASON_VMREAD, "VMREAD" }, { EXIT_REASON_VMRESUME, "VMRESUME" }, { EXIT_REASON_VMWRITE, "VMWRITE" }, { EXIT_REASON_VMOFF, "VMOFF" }, { EXIT_REASON_VMON, "VMON" }, { EXIT_REASON_CR_ACCESS, "CR_ACCESS" }, { EXIT_REASON_DR_ACCESS, "DR_ACCESS" }, { EXIT_REASON_IO_INSTRUCTION, "IO_INSTRUCTION" }, { EXIT_REASON_MSR_READ, "MSR_READ" }, { EXIT_REASON_MSR_WRITE, "MSR_WRITE" }, { EXIT_REASON_INVALID_STATE, "INVALID_STATE" }, { EXIT_REASON_MSR_LOAD_FAIL, "MSR_LOAD_FAIL" }, { EXIT_REASON_MWAIT_INSTRUCTION, "MWAIT_INSTRUCTION" }, { EXIT_REASON_MONITOR_TRAP_FLAG, "MONITOR_TRAP_FLAG" }, { EXIT_REASON_MONITOR_INSTRUCTION, "MONITOR_INSTRUCTION" }, { EXIT_REASON_PAUSE_INSTRUCTION, "PAUSE_INSTRUCTION" }, { EXIT_REASON_MCE_DURING_VMENTRY, "MCE_DURING_VMENTRY" }, { EXIT_REASON_TPR_BELOW_THRESHOLD, "TPR_BELOW_THRESHOLD" }, { EXIT_REASON_APIC_ACCESS, "APIC_ACCESS" }, { EXIT_REASON_EOI_INDUCED, "EOI_INDUCED" }, { EXIT_REASON_GDTR_IDTR, "GDTR_IDTR" }, { EXIT_REASON_LDTR_TR, "LDTR_TR" }, { EXIT_REASON_EPT_VIOLATION, "EPT_VIOLATION" }, { EXIT_REASON_EPT_MISCONFIG, "EPT_MISCONFIG" }, { EXIT_REASON_INVEPT, "INVEPT" }, { EXIT_REASON_RDTSCP, "RDTSCP" }, { EXIT_REASON_PREEMPTION_TIMER, "PREEMPTION_TIMER" }, { EXIT_REASON_INVVPID, "INVVPID" }, { EXIT_REASON_WBINVD, "WBINVD" }, { EXIT_REASON_XSETBV, "XSETBV" }, { EXIT_REASON_APIC_WRITE, "APIC_WRITE" }, { EXIT_REASON_RDRAND, "RDRAND" }, { EXIT_REASON_INVPCID, "INVPCID" }, { EXIT_REASON_VMFUNC, "VMFUNC" }, { EXIT_REASON_ENCLS, "ENCLS" }, { EXIT_REASON_RDSEED, "RDSEED" }, { EXIT_REASON_PML_FULL, "PML_FULL" }, { EXIT_REASON_XSAVES, "XSAVES" }, { EXIT_REASON_XRSTORS, "XRSTORS" }, { EXIT_REASON_UMWAIT, "UMWAIT" }, { EXIT_REASON_TPAUSE, "TPAUSE" }
 #define VMX_ABORT_SAVE_GUEST_MSR_FAIL 1
 #define VMX_ABORT_LOAD_HOST_PDPTE_FAIL 2
 #define VMX_ABORT_LOAD_HOST_MSR_FAIL 4
diff --git a/libc/kernel/uapi/drm/amdgpu_drm.h b/libc/kernel/uapi/drm/amdgpu_drm.h
index b986d30..a88e3d9 100644
--- a/libc/kernel/uapi/drm/amdgpu_drm.h
+++ b/libc/kernel/uapi/drm/amdgpu_drm.h
@@ -428,6 +428,7 @@
 #define AMDGPU_INFO_FW_GFX_RLC_RESTORE_LIST_SRM_MEM 0x11
 #define AMDGPU_INFO_FW_DMCU 0x12
 #define AMDGPU_INFO_FW_TA 0x13
+#define AMDGPU_INFO_FW_DMCUB 0x14
 #define AMDGPU_INFO_NUM_BYTES_MOVED 0x0f
 #define AMDGPU_INFO_VRAM_USAGE 0x10
 #define AMDGPU_INFO_GTT_USAGE 0x11
diff --git a/libc/kernel/uapi/drm/drm_fourcc.h b/libc/kernel/uapi/drm/drm_fourcc.h
index a316269..898d9ad 100644
--- a/libc/kernel/uapi/drm/drm_fourcc.h
+++ b/libc/kernel/uapi/drm/drm_fourcc.h
@@ -145,6 +145,8 @@
 #define I915_FORMAT_MOD_Yf_TILED fourcc_mod_code(INTEL, 3)
 #define I915_FORMAT_MOD_Y_TILED_CCS fourcc_mod_code(INTEL, 4)
 #define I915_FORMAT_MOD_Yf_TILED_CCS fourcc_mod_code(INTEL, 5)
+#define I915_FORMAT_MOD_Y_TILED_GEN12_RC_CCS fourcc_mod_code(INTEL, 6)
+#define I915_FORMAT_MOD_Y_TILED_GEN12_MC_CCS fourcc_mod_code(INTEL, 7)
 #define DRM_FORMAT_MOD_SAMSUNG_64_32_TILE fourcc_mod_code(SAMSUNG, 1)
 #define DRM_FORMAT_MOD_SAMSUNG_16_16_TILE fourcc_mod_code(SAMSUNG, 2)
 #define DRM_FORMAT_MOD_QCOM_COMPRESSED fourcc_mod_code(QCOM, 1)
diff --git a/libc/kernel/uapi/drm/i915_drm.h b/libc/kernel/uapi/drm/i915_drm.h
index 2e61275..fce9c67 100644
--- a/libc/kernel/uapi/drm/i915_drm.h
+++ b/libc/kernel/uapi/drm/i915_drm.h
@@ -250,6 +250,7 @@
 #define DRM_IOCTL_I915_GEM_PWRITE DRM_IOW(DRM_COMMAND_BASE + DRM_I915_GEM_PWRITE, struct drm_i915_gem_pwrite)
 #define DRM_IOCTL_I915_GEM_MMAP DRM_IOWR(DRM_COMMAND_BASE + DRM_I915_GEM_MMAP, struct drm_i915_gem_mmap)
 #define DRM_IOCTL_I915_GEM_MMAP_GTT DRM_IOWR(DRM_COMMAND_BASE + DRM_I915_GEM_MMAP_GTT, struct drm_i915_gem_mmap_gtt)
+#define DRM_IOCTL_I915_GEM_MMAP_OFFSET DRM_IOWR(DRM_COMMAND_BASE + DRM_I915_GEM_MMAP_GTT, struct drm_i915_gem_mmap_offset)
 #define DRM_IOCTL_I915_GEM_SET_DOMAIN DRM_IOW(DRM_COMMAND_BASE + DRM_I915_GEM_SET_DOMAIN, struct drm_i915_gem_set_domain)
 #define DRM_IOCTL_I915_GEM_SW_FINISH DRM_IOW(DRM_COMMAND_BASE + DRM_I915_GEM_SW_FINISH, struct drm_i915_gem_sw_finish)
 #define DRM_IOCTL_I915_GEM_SET_TILING DRM_IOWR(DRM_COMMAND_BASE + DRM_I915_GEM_SET_TILING, struct drm_i915_gem_set_tiling)
@@ -441,6 +442,17 @@
   __u32 pad;
   __u64 offset;
 };
+struct drm_i915_gem_mmap_offset {
+  __u32 handle;
+  __u32 pad;
+  __u64 offset;
+  __u64 flags;
+#define I915_MMAP_OFFSET_GTT 0
+#define I915_MMAP_OFFSET_WC 1
+#define I915_MMAP_OFFSET_WB 2
+#define I915_MMAP_OFFSET_UC 3
+  __u64 extensions;
+};
 struct drm_i915_gem_set_domain {
   __u32 handle;
   __u32 read_domains;
diff --git a/libc/kernel/uapi/drm/nouveau_drm.h b/libc/kernel/uapi/drm/nouveau_drm.h
index 186ffcc..150f729 100644
--- a/libc/kernel/uapi/drm/nouveau_drm.h
+++ b/libc/kernel/uapi/drm/nouveau_drm.h
@@ -92,6 +92,7 @@
   __u64 push;
   __u32 suffix0;
   __u32 suffix1;
+#define NOUVEAU_GEM_PUSHBUF_SYNC (1ULL << 0)
   __u64 vram_available;
   __u64 gart_available;
 };
diff --git a/libc/kernel/uapi/drm/vmwgfx_drm.h b/libc/kernel/uapi/drm/vmwgfx_drm.h
index 753192b..04d3081 100644
--- a/libc/kernel/uapi/drm/vmwgfx_drm.h
+++ b/libc/kernel/uapi/drm/vmwgfx_drm.h
@@ -55,6 +55,7 @@
 #define DRM_VMW_CREATE_EXTENDED_CONTEXT 26
 #define DRM_VMW_GB_SURFACE_CREATE_EXT 27
 #define DRM_VMW_GB_SURFACE_REF_EXT 28
+#define DRM_VMW_MSG 29
 #define DRM_VMW_PARAM_NUM_STREAMS 0
 #define DRM_VMW_PARAM_NUM_FREE_STREAMS 1
 #define DRM_VMW_PARAM_3D 2
@@ -351,6 +352,12 @@
   struct drm_vmw_gb_surface_ref_ext_rep rep;
   struct drm_vmw_surface_arg req;
 };
+struct drm_vmw_msg_arg {
+  __u64 send;
+  __u64 receive;
+  __s32 send_only;
+  __u32 receive_len;
+};
 #ifdef __cplusplus
 }
 #endif
diff --git a/libc/kernel/uapi/linux/audit.h b/libc/kernel/uapi/linux/audit.h
index d14f018..a4bb3b5 100644
--- a/libc/kernel/uapi/linux/audit.h
+++ b/libc/kernel/uapi/linux/audit.h
@@ -81,6 +81,7 @@
 #define AUDIT_FANOTIFY 1331
 #define AUDIT_TIME_INJOFFSET 1332
 #define AUDIT_TIME_ADJNTPVAL 1333
+#define AUDIT_BPF 1334
 #define AUDIT_AVC 1400
 #define AUDIT_SELINUX_ERR 1401
 #define AUDIT_AVC_PATH 1402
diff --git a/libc/kernel/uapi/linux/b1lli.h b/libc/kernel/uapi/linux/b1lli.h
deleted file mode 100644
index 29c7fe8..0000000
--- a/libc/kernel/uapi/linux/b1lli.h
+++ /dev/null
@@ -1,64 +0,0 @@
-/****************************************************************************
- ****************************************************************************
- ***
- ***   This header was automatically generated from a Linux kernel header
- ***   of the same name, to make information necessary for userspace to
- ***   call into the kernel available to libc.  It contains only constants,
- ***   structures, and macros generated from the original header, and thus,
- ***   contains no copyrightable information.
- ***
- ***   To edit the content of this header, modify the corresponding
- ***   source file (e.g. under external/kernel-headers/original/) then
- ***   run bionic/libc/kernel/tools/update_all.py
- ***
- ***   Any manual change here will be lost the next time this script will
- ***   be run. You've been warned!
- ***
- ****************************************************************************
- ****************************************************************************/
-#ifndef _B1LLI_H_
-#define _B1LLI_H_
-typedef struct avmb1_t4file {
-  int len;
-  unsigned char * data;
-} avmb1_t4file;
-typedef struct avmb1_loaddef {
-  int contr;
-  avmb1_t4file t4file;
-} avmb1_loaddef;
-typedef struct avmb1_loadandconfigdef {
-  int contr;
-  avmb1_t4file t4file;
-  avmb1_t4file t4config;
-} avmb1_loadandconfigdef;
-typedef struct avmb1_resetdef {
-  int contr;
-} avmb1_resetdef;
-typedef struct avmb1_getdef {
-  int contr;
-  int cardtype;
-  int cardstate;
-} avmb1_getdef;
-typedef struct avmb1_carddef {
-  int port;
-  int irq;
-} avmb1_carddef;
-#define AVM_CARDTYPE_B1 0
-#define AVM_CARDTYPE_T1 1
-#define AVM_CARDTYPE_M1 2
-#define AVM_CARDTYPE_M2 3
-typedef struct avmb1_extcarddef {
-  int port;
-  int irq;
-  int cardtype;
-  int cardnr;
-} avmb1_extcarddef;
-#define AVMB1_LOAD 0
-#define AVMB1_ADDCARD 1
-#define AVMB1_RESETCARD 2
-#define AVMB1_LOAD_AND_CONFIG 3
-#define AVMB1_ADDCARD_WITH_TYPE 4
-#define AVMB1_GET_CARDINFO 5
-#define AVMB1_REMOVECARD 6
-#define AVMB1_REGISTERCARD_IS_OBSOLETE
-#endif
diff --git a/libc/kernel/uapi/linux/bcache.h b/libc/kernel/uapi/linux/bcache.h
index 1bee0a3..5e5377e 100644
--- a/libc/kernel/uapi/linux/bcache.h
+++ b/libc/kernel/uapi/linux/bcache.h
@@ -56,11 +56,46 @@
 #define BCACHE_SB_VERSION_BDEV_WITH_OFFSET 4
 #define BCACHE_SB_MAX_VERSION 4
 #define SB_SECTOR 8
+#define SB_OFFSET (SB_SECTOR << SECTOR_SHIFT)
 #define SB_SIZE 4096
 #define SB_LABEL_SIZE 32
 #define SB_JOURNAL_BUCKETS 256U
 #define MAX_CACHES_PER_SET 8
 #define BDEV_DATA_START_DEFAULT 16
+struct cache_sb_disk {
+  __le64 csum;
+  __le64 offset;
+  __le64 version;
+  __u8 magic[16];
+  __u8 uuid[16];
+  union {
+    __u8 set_uuid[16];
+    __le64 set_magic;
+  };
+  __u8 label[SB_LABEL_SIZE];
+  __le64 flags;
+  __le64 seq;
+  __le64 pad[8];
+  union {
+    struct {
+      __le64 nbuckets;
+      __le16 block_size;
+      __le16 bucket_size;
+      __le16 nr_in_set;
+      __le16 nr_this_dev;
+    };
+    struct {
+      __le64 data_offset;
+    };
+  };
+  __le32 last_mount;
+  __le16 first_bucket;
+  union {
+    __le16 njournal_buckets;
+    __le16 keys;
+  };
+  __le64 d[SB_JOURNAL_BUCKETS];
+};
 struct cache_sb {
   __u64 csum;
   __u64 offset;
diff --git a/libc/kernel/uapi/linux/bpf.h b/libc/kernel/uapi/linux/bpf.h
index 80a9feb..bebab62 100644
--- a/libc/kernel/uapi/linux/bpf.h
+++ b/libc/kernel/uapi/linux/bpf.h
@@ -95,6 +95,10 @@
   BPF_MAP_LOOKUP_AND_DELETE_ELEM,
   BPF_MAP_FREEZE,
   BPF_BTF_GET_NEXT_ID,
+  BPF_MAP_LOOKUP_BATCH,
+  BPF_MAP_LOOKUP_AND_DELETE_BATCH,
+  BPF_MAP_UPDATE_BATCH,
+  BPF_MAP_DELETE_BATCH,
 };
 enum bpf_map_type {
   BPF_MAP_TYPE_UNSPEC,
@@ -123,6 +127,7 @@
   BPF_MAP_TYPE_STACK,
   BPF_MAP_TYPE_SK_STORAGE,
   BPF_MAP_TYPE_DEVMAP_HASH,
+  BPF_MAP_TYPE_STRUCT_OPS,
 };
 enum bpf_prog_type {
   BPF_PROG_TYPE_UNSPEC,
@@ -152,6 +157,8 @@
   BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE,
   BPF_PROG_TYPE_CGROUP_SOCKOPT,
   BPF_PROG_TYPE_TRACING,
+  BPF_PROG_TYPE_STRUCT_OPS,
+  BPF_PROG_TYPE_EXT,
 };
 enum bpf_attach_type {
   BPF_CGROUP_INET_INGRESS,
@@ -185,6 +192,7 @@
 #define MAX_BPF_ATTACH_TYPE __MAX_BPF_ATTACH_TYPE
 #define BPF_F_ALLOW_OVERRIDE (1U << 0)
 #define BPF_F_ALLOW_MULTI (1U << 1)
+#define BPF_F_REPLACE (1U << 2)
 #define BPF_F_STRICT_ALIGNMENT (1U << 0)
 #define BPF_F_ANY_ALIGNMENT (1U << 1)
 #define BPF_F_TEST_RND_HI32 (1U << 2)
@@ -237,6 +245,7 @@
     __u32 btf_fd;
     __u32 btf_key_type_id;
     __u32 btf_value_type_id;
+    __u32 btf_vmlinux_value_type_id;
   };
   struct {
     __u32 map_fd;
@@ -248,6 +257,16 @@
     __u64 flags;
   };
   struct {
+    __aligned_u64 in_batch;
+    __aligned_u64 out_batch;
+    __aligned_u64 keys;
+    __aligned_u64 values;
+    __u32 count;
+    __u32 map_fd;
+    __u64 elem_flags;
+    __u64 flags;
+  } batch;
+  struct {
     __u32 prog_type;
     __u32 insn_cnt;
     __aligned_u64 insns;
@@ -280,6 +299,7 @@
     __u32 attach_bpf_fd;
     __u32 attach_type;
     __u32 attach_flags;
+    __u32 replace_bpf_fd;
   };
   struct {
     __u32 prog_fd;
@@ -341,7 +361,7 @@
     __u64 probe_addr;
   } task_fd_query;
 } __attribute__((aligned(8)));
-#define __BPF_FUNC_MAPPER(FN) FN(unspec), FN(map_lookup_elem), FN(map_update_elem), FN(map_delete_elem), FN(probe_read), FN(ktime_get_ns), FN(trace_printk), FN(get_prandom_u32), FN(get_smp_processor_id), FN(skb_store_bytes), FN(l3_csum_replace), FN(l4_csum_replace), FN(tail_call), FN(clone_redirect), FN(get_current_pid_tgid), FN(get_current_uid_gid), FN(get_current_comm), FN(get_cgroup_classid), FN(skb_vlan_push), FN(skb_vlan_pop), FN(skb_get_tunnel_key), FN(skb_set_tunnel_key), FN(perf_event_read), FN(redirect), FN(get_route_realm), FN(perf_event_output), FN(skb_load_bytes), FN(get_stackid), FN(csum_diff), FN(skb_get_tunnel_opt), FN(skb_set_tunnel_opt), FN(skb_change_proto), FN(skb_change_type), FN(skb_under_cgroup), FN(get_hash_recalc), FN(get_current_task), FN(probe_write_user), FN(current_task_under_cgroup), FN(skb_change_tail), FN(skb_pull_data), FN(csum_update), FN(set_hash_invalid), FN(get_numa_node_id), FN(skb_change_head), FN(xdp_adjust_head), FN(probe_read_str), FN(get_socket_cookie), FN(get_socket_uid), FN(set_hash), FN(setsockopt), FN(skb_adjust_room), FN(redirect_map), FN(sk_redirect_map), FN(sock_map_update), FN(xdp_adjust_meta), FN(perf_event_read_value), FN(perf_prog_read_value), FN(getsockopt), FN(override_return), FN(sock_ops_cb_flags_set), FN(msg_redirect_map), FN(msg_apply_bytes), FN(msg_cork_bytes), FN(msg_pull_data), FN(bind), FN(xdp_adjust_tail), FN(skb_get_xfrm_state), FN(get_stack), FN(skb_load_bytes_relative), FN(fib_lookup), FN(sock_hash_update), FN(msg_redirect_hash), FN(sk_redirect_hash), FN(lwt_push_encap), FN(lwt_seg6_store_bytes), FN(lwt_seg6_adjust_srh), FN(lwt_seg6_action), FN(rc_repeat), FN(rc_keydown), FN(skb_cgroup_id), FN(get_current_cgroup_id), FN(get_local_storage), FN(sk_select_reuseport), FN(skb_ancestor_cgroup_id), FN(sk_lookup_tcp), FN(sk_lookup_udp), FN(sk_release), FN(map_push_elem), FN(map_pop_elem), FN(map_peek_elem), FN(msg_push_data), FN(msg_pop_data), FN(rc_pointer_rel), FN(spin_lock), FN(spin_unlock), FN(sk_fullsock), FN(tcp_sock), FN(skb_ecn_set_ce), FN(get_listener_sock), FN(skc_lookup_tcp), FN(tcp_check_syncookie), FN(sysctl_get_name), FN(sysctl_get_current_value), FN(sysctl_get_new_value), FN(sysctl_set_new_value), FN(strtol), FN(strtoul), FN(sk_storage_get), FN(sk_storage_delete), FN(send_signal), FN(tcp_gen_syncookie), FN(skb_output), FN(probe_read_user), FN(probe_read_kernel), FN(probe_read_user_str), FN(probe_read_kernel_str),
+#define __BPF_FUNC_MAPPER(FN) FN(unspec), FN(map_lookup_elem), FN(map_update_elem), FN(map_delete_elem), FN(probe_read), FN(ktime_get_ns), FN(trace_printk), FN(get_prandom_u32), FN(get_smp_processor_id), FN(skb_store_bytes), FN(l3_csum_replace), FN(l4_csum_replace), FN(tail_call), FN(clone_redirect), FN(get_current_pid_tgid), FN(get_current_uid_gid), FN(get_current_comm), FN(get_cgroup_classid), FN(skb_vlan_push), FN(skb_vlan_pop), FN(skb_get_tunnel_key), FN(skb_set_tunnel_key), FN(perf_event_read), FN(redirect), FN(get_route_realm), FN(perf_event_output), FN(skb_load_bytes), FN(get_stackid), FN(csum_diff), FN(skb_get_tunnel_opt), FN(skb_set_tunnel_opt), FN(skb_change_proto), FN(skb_change_type), FN(skb_under_cgroup), FN(get_hash_recalc), FN(get_current_task), FN(probe_write_user), FN(current_task_under_cgroup), FN(skb_change_tail), FN(skb_pull_data), FN(csum_update), FN(set_hash_invalid), FN(get_numa_node_id), FN(skb_change_head), FN(xdp_adjust_head), FN(probe_read_str), FN(get_socket_cookie), FN(get_socket_uid), FN(set_hash), FN(setsockopt), FN(skb_adjust_room), FN(redirect_map), FN(sk_redirect_map), FN(sock_map_update), FN(xdp_adjust_meta), FN(perf_event_read_value), FN(perf_prog_read_value), FN(getsockopt), FN(override_return), FN(sock_ops_cb_flags_set), FN(msg_redirect_map), FN(msg_apply_bytes), FN(msg_cork_bytes), FN(msg_pull_data), FN(bind), FN(xdp_adjust_tail), FN(skb_get_xfrm_state), FN(get_stack), FN(skb_load_bytes_relative), FN(fib_lookup), FN(sock_hash_update), FN(msg_redirect_hash), FN(sk_redirect_hash), FN(lwt_push_encap), FN(lwt_seg6_store_bytes), FN(lwt_seg6_adjust_srh), FN(lwt_seg6_action), FN(rc_repeat), FN(rc_keydown), FN(skb_cgroup_id), FN(get_current_cgroup_id), FN(get_local_storage), FN(sk_select_reuseport), FN(skb_ancestor_cgroup_id), FN(sk_lookup_tcp), FN(sk_lookup_udp), FN(sk_release), FN(map_push_elem), FN(map_pop_elem), FN(map_peek_elem), FN(msg_push_data), FN(msg_pop_data), FN(rc_pointer_rel), FN(spin_lock), FN(spin_unlock), FN(sk_fullsock), FN(tcp_sock), FN(skb_ecn_set_ce), FN(get_listener_sock), FN(skc_lookup_tcp), FN(tcp_check_syncookie), FN(sysctl_get_name), FN(sysctl_get_current_value), FN(sysctl_get_new_value), FN(sysctl_set_new_value), FN(strtol), FN(strtoul), FN(sk_storage_get), FN(sk_storage_delete), FN(send_signal), FN(tcp_gen_syncookie), FN(skb_output), FN(probe_read_user), FN(probe_read_kernel), FN(probe_read_user_str), FN(probe_read_kernel_str), FN(tcp_send_ack), FN(send_signal_thread), FN(jiffies64),
 #define __BPF_ENUM_FN(x) BPF_FUNC_ ##x
 enum bpf_func_id {
   __BPF_FUNC_MAPPER(__BPF_ENUM_FN) __BPF_FUNC_MAX_ID,
@@ -601,7 +621,7 @@
   __u32 map_flags;
   char name[BPF_OBJ_NAME_LEN];
   __u32 ifindex;
-  __u32 : 32;
+  __u32 btf_vmlinux_value_type_id;
   __u64 netns_dev;
   __u64 netns_ino;
   __u32 btf_id;
diff --git a/libc/kernel/uapi/linux/btf.h b/libc/kernel/uapi/linux/btf.h
index 21e7596..f22d637 100644
--- a/libc/kernel/uapi/linux/btf.h
+++ b/libc/kernel/uapi/linux/btf.h
@@ -91,7 +91,13 @@
 };
 enum {
   BTF_VAR_STATIC = 0,
-  BTF_VAR_GLOBAL_ALLOCATED,
+  BTF_VAR_GLOBAL_ALLOCATED = 1,
+  BTF_VAR_GLOBAL_EXTERN = 2,
+};
+enum btf_func_linkage {
+  BTF_FUNC_STATIC = 0,
+  BTF_FUNC_GLOBAL = 1,
+  BTF_FUNC_EXTERN = 2,
 };
 struct btf_var {
   __u32 linkage;
diff --git a/libc/kernel/uapi/linux/dm-ioctl.h b/libc/kernel/uapi/linux/dm-ioctl.h
index 51e997f..130c4c7 100644
--- a/libc/kernel/uapi/linux/dm-ioctl.h
+++ b/libc/kernel/uapi/linux/dm-ioctl.h
@@ -104,9 +104,9 @@
 #define DM_TARGET_MSG _IOWR(DM_IOCTL, DM_TARGET_MSG_CMD, struct dm_ioctl)
 #define DM_DEV_SET_GEOMETRY _IOWR(DM_IOCTL, DM_DEV_SET_GEOMETRY_CMD, struct dm_ioctl)
 #define DM_VERSION_MAJOR 4
-#define DM_VERSION_MINOR 41
+#define DM_VERSION_MINOR 42
 #define DM_VERSION_PATCHLEVEL 0
-#define DM_VERSION_EXTRA "-ioctl(2019-09-16)"
+#define DM_VERSION_EXTRA "-ioctl(2020-02-27)"
 #define DM_READONLY_FLAG (1 << 0)
 #define DM_SUSPEND_FLAG (1 << 1)
 #define DM_PERSISTENT_DEV_FLAG (1 << 3)
diff --git a/libc/kernel/uapi/linux/gigaset_dev.h b/libc/kernel/uapi/linux/dma-heap.h
similarity index 70%
rename from libc/kernel/uapi/linux/gigaset_dev.h
rename to libc/kernel/uapi/linux/dma-heap.h
index 5741d7d..a2746e3 100644
--- a/libc/kernel/uapi/linux/gigaset_dev.h
+++ b/libc/kernel/uapi/linux/dma-heap.h
@@ -16,15 +16,18 @@
  ***
  ****************************************************************************
  ****************************************************************************/
-#ifndef GIGASET_INTERFACE_H
-#define GIGASET_INTERFACE_H
+#ifndef _UAPI_LINUX_DMABUF_POOL_H
+#define _UAPI_LINUX_DMABUF_POOL_H
 #include <linux/ioctl.h>
-#define GIGASET_IOCTL 0x47
-#define GIGASET_REDIR _IOWR(GIGASET_IOCTL, 0, int)
-#define GIGASET_CONFIG _IOWR(GIGASET_IOCTL, 1, int)
-#define GIGASET_BRKCHARS _IOW(GIGASET_IOCTL, 2, unsigned char[6])
-#define GIGASET_VERSION _IOWR(GIGASET_IOCTL, 3, unsigned[4])
-#define GIGVER_DRIVER 0
-#define GIGVER_COMPAT 1
-#define GIGVER_FWBASE 2
+#include <linux/types.h>
+#define DMA_HEAP_VALID_FD_FLAGS (O_CLOEXEC | O_ACCMODE)
+#define DMA_HEAP_VALID_HEAP_FLAGS (0)
+struct dma_heap_allocation_data {
+  __u64 len;
+  __u32 fd;
+  __u32 fd_flags;
+  __u64 heap_flags;
+};
+#define DMA_HEAP_IOC_MAGIC 'H'
+#define DMA_HEAP_IOCTL_ALLOC _IOWR(DMA_HEAP_IOC_MAGIC, 0x0, struct dma_heap_allocation_data)
 #endif
diff --git a/libc/kernel/uapi/linux/ethtool.h b/libc/kernel/uapi/linux/ethtool.h
index cc951d1..93ff2a9 100644
--- a/libc/kernel/uapi/linux/ethtool.h
+++ b/libc/kernel/uapi/linux/ethtool.h
@@ -207,6 +207,10 @@
   ETH_SS_TUNABLES,
   ETH_SS_PHY_STATS,
   ETH_SS_PHY_TUNABLES,
+  ETH_SS_LINK_MODES,
+  ETH_SS_MSG_CLASSES,
+  ETH_SS_WOL_MODES,
+  ETH_SS_COUNT
 };
 struct ethtool_gstrings {
   __u32 cmd;
@@ -726,6 +730,7 @@
 #define WAKE_MAGIC (1 << 5)
 #define WAKE_MAGICSECURE (1 << 6)
 #define WAKE_FILTER (1 << 7)
+#define WOL_MODE_COUNT 8
 #define TCP_V4_FLOW 0x01
 #define UDP_V4_FLOW 0x02
 #define SCTP_V4_FLOW 0x03
diff --git a/libc/kernel/uapi/linux/ethtool_netlink.h b/libc/kernel/uapi/linux/ethtool_netlink.h
new file mode 100644
index 0000000..e0f2fc7
--- /dev/null
+++ b/libc/kernel/uapi/linux/ethtool_netlink.h
@@ -0,0 +1,169 @@
+/****************************************************************************
+ ****************************************************************************
+ ***
+ ***   This header was automatically generated from a Linux kernel header
+ ***   of the same name, to make information necessary for userspace to
+ ***   call into the kernel available to libc.  It contains only constants,
+ ***   structures, and macros generated from the original header, and thus,
+ ***   contains no copyrightable information.
+ ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
+ ****************************************************************************
+ ****************************************************************************/
+#ifndef _UAPI_LINUX_ETHTOOL_NETLINK_H_
+#define _UAPI_LINUX_ETHTOOL_NETLINK_H_
+#include <linux/ethtool.h>
+enum {
+  ETHTOOL_MSG_USER_NONE,
+  ETHTOOL_MSG_STRSET_GET,
+  ETHTOOL_MSG_LINKINFO_GET,
+  ETHTOOL_MSG_LINKINFO_SET,
+  ETHTOOL_MSG_LINKMODES_GET,
+  ETHTOOL_MSG_LINKMODES_SET,
+  ETHTOOL_MSG_LINKSTATE_GET,
+  ETHTOOL_MSG_DEBUG_GET,
+  ETHTOOL_MSG_DEBUG_SET,
+  ETHTOOL_MSG_WOL_GET,
+  ETHTOOL_MSG_WOL_SET,
+  __ETHTOOL_MSG_USER_CNT,
+  ETHTOOL_MSG_USER_MAX = __ETHTOOL_MSG_USER_CNT - 1
+};
+enum {
+  ETHTOOL_MSG_KERNEL_NONE,
+  ETHTOOL_MSG_STRSET_GET_REPLY,
+  ETHTOOL_MSG_LINKINFO_GET_REPLY,
+  ETHTOOL_MSG_LINKINFO_NTF,
+  ETHTOOL_MSG_LINKMODES_GET_REPLY,
+  ETHTOOL_MSG_LINKMODES_NTF,
+  ETHTOOL_MSG_LINKSTATE_GET_REPLY,
+  ETHTOOL_MSG_DEBUG_GET_REPLY,
+  ETHTOOL_MSG_DEBUG_NTF,
+  ETHTOOL_MSG_WOL_GET_REPLY,
+  ETHTOOL_MSG_WOL_NTF,
+  __ETHTOOL_MSG_KERNEL_CNT,
+  ETHTOOL_MSG_KERNEL_MAX = __ETHTOOL_MSG_KERNEL_CNT - 1
+};
+#define ETHTOOL_FLAG_COMPACT_BITSETS (1 << 0)
+#define ETHTOOL_FLAG_OMIT_REPLY (1 << 1)
+#define ETHTOOL_FLAG_ALL (ETHTOOL_FLAG_COMPACT_BITSETS | ETHTOOL_FLAG_OMIT_REPLY)
+enum {
+  ETHTOOL_A_HEADER_UNSPEC,
+  ETHTOOL_A_HEADER_DEV_INDEX,
+  ETHTOOL_A_HEADER_DEV_NAME,
+  ETHTOOL_A_HEADER_FLAGS,
+  __ETHTOOL_A_HEADER_CNT,
+  ETHTOOL_A_HEADER_MAX = __ETHTOOL_A_HEADER_CNT - 1
+};
+enum {
+  ETHTOOL_A_BITSET_BIT_UNSPEC,
+  ETHTOOL_A_BITSET_BIT_INDEX,
+  ETHTOOL_A_BITSET_BIT_NAME,
+  ETHTOOL_A_BITSET_BIT_VALUE,
+  __ETHTOOL_A_BITSET_BIT_CNT,
+  ETHTOOL_A_BITSET_BIT_MAX = __ETHTOOL_A_BITSET_BIT_CNT - 1
+};
+enum {
+  ETHTOOL_A_BITSET_BITS_UNSPEC,
+  ETHTOOL_A_BITSET_BITS_BIT,
+  __ETHTOOL_A_BITSET_BITS_CNT,
+  ETHTOOL_A_BITSET_BITS_MAX = __ETHTOOL_A_BITSET_BITS_CNT - 1
+};
+enum {
+  ETHTOOL_A_BITSET_UNSPEC,
+  ETHTOOL_A_BITSET_NOMASK,
+  ETHTOOL_A_BITSET_SIZE,
+  ETHTOOL_A_BITSET_BITS,
+  ETHTOOL_A_BITSET_VALUE,
+  ETHTOOL_A_BITSET_MASK,
+  __ETHTOOL_A_BITSET_CNT,
+  ETHTOOL_A_BITSET_MAX = __ETHTOOL_A_BITSET_CNT - 1
+};
+enum {
+  ETHTOOL_A_STRING_UNSPEC,
+  ETHTOOL_A_STRING_INDEX,
+  ETHTOOL_A_STRING_VALUE,
+  __ETHTOOL_A_STRING_CNT,
+  ETHTOOL_A_STRING_MAX = __ETHTOOL_A_STRING_CNT - 1
+};
+enum {
+  ETHTOOL_A_STRINGS_UNSPEC,
+  ETHTOOL_A_STRINGS_STRING,
+  __ETHTOOL_A_STRINGS_CNT,
+  ETHTOOL_A_STRINGS_MAX = __ETHTOOL_A_STRINGS_CNT - 1
+};
+enum {
+  ETHTOOL_A_STRINGSET_UNSPEC,
+  ETHTOOL_A_STRINGSET_ID,
+  ETHTOOL_A_STRINGSET_COUNT,
+  ETHTOOL_A_STRINGSET_STRINGS,
+  __ETHTOOL_A_STRINGSET_CNT,
+  ETHTOOL_A_STRINGSET_MAX = __ETHTOOL_A_STRINGSET_CNT - 1
+};
+enum {
+  ETHTOOL_A_STRINGSETS_UNSPEC,
+  ETHTOOL_A_STRINGSETS_STRINGSET,
+  __ETHTOOL_A_STRINGSETS_CNT,
+  ETHTOOL_A_STRINGSETS_MAX = __ETHTOOL_A_STRINGSETS_CNT - 1
+};
+enum {
+  ETHTOOL_A_STRSET_UNSPEC,
+  ETHTOOL_A_STRSET_HEADER,
+  ETHTOOL_A_STRSET_STRINGSETS,
+  ETHTOOL_A_STRSET_COUNTS_ONLY,
+  __ETHTOOL_A_STRSET_CNT,
+  ETHTOOL_A_STRSET_MAX = __ETHTOOL_A_STRSET_CNT - 1
+};
+enum {
+  ETHTOOL_A_LINKINFO_UNSPEC,
+  ETHTOOL_A_LINKINFO_HEADER,
+  ETHTOOL_A_LINKINFO_PORT,
+  ETHTOOL_A_LINKINFO_PHYADDR,
+  ETHTOOL_A_LINKINFO_TP_MDIX,
+  ETHTOOL_A_LINKINFO_TP_MDIX_CTRL,
+  ETHTOOL_A_LINKINFO_TRANSCEIVER,
+  __ETHTOOL_A_LINKINFO_CNT,
+  ETHTOOL_A_LINKINFO_MAX = __ETHTOOL_A_LINKINFO_CNT - 1
+};
+enum {
+  ETHTOOL_A_LINKMODES_UNSPEC,
+  ETHTOOL_A_LINKMODES_HEADER,
+  ETHTOOL_A_LINKMODES_AUTONEG,
+  ETHTOOL_A_LINKMODES_OURS,
+  ETHTOOL_A_LINKMODES_PEER,
+  ETHTOOL_A_LINKMODES_SPEED,
+  ETHTOOL_A_LINKMODES_DUPLEX,
+  __ETHTOOL_A_LINKMODES_CNT,
+  ETHTOOL_A_LINKMODES_MAX = __ETHTOOL_A_LINKMODES_CNT - 1
+};
+enum {
+  ETHTOOL_A_LINKSTATE_UNSPEC,
+  ETHTOOL_A_LINKSTATE_HEADER,
+  ETHTOOL_A_LINKSTATE_LINK,
+  __ETHTOOL_A_LINKSTATE_CNT,
+  ETHTOOL_A_LINKSTATE_MAX = __ETHTOOL_A_LINKSTATE_CNT - 1
+};
+enum {
+  ETHTOOL_A_DEBUG_UNSPEC,
+  ETHTOOL_A_DEBUG_HEADER,
+  ETHTOOL_A_DEBUG_MSGMASK,
+  __ETHTOOL_A_DEBUG_CNT,
+  ETHTOOL_A_DEBUG_MAX = __ETHTOOL_A_DEBUG_CNT - 1
+};
+enum {
+  ETHTOOL_A_WOL_UNSPEC,
+  ETHTOOL_A_WOL_HEADER,
+  ETHTOOL_A_WOL_MODES,
+  ETHTOOL_A_WOL_SOPASS,
+  __ETHTOOL_A_WOL_CNT,
+  ETHTOOL_A_WOL_MAX = __ETHTOOL_A_WOL_CNT - 1
+};
+#define ETHTOOL_GENL_NAME "ethtool"
+#define ETHTOOL_GENL_VERSION 1
+#define ETHTOOL_MCGRP_MONITOR_NAME "monitor"
+#endif
diff --git a/libc/kernel/uapi/linux/fcntl.h b/libc/kernel/uapi/linux/fcntl.h
index d0f19c8..84f0095 100644
--- a/libc/kernel/uapi/linux/fcntl.h
+++ b/libc/kernel/uapi/linux/fcntl.h
@@ -19,6 +19,7 @@
 #ifndef _UAPI_LINUX_FCNTL_H
 #define _UAPI_LINUX_FCNTL_H
 #include <asm/fcntl.h>
+#include <linux/openat2.h>
 #define F_SETLEASE (F_LINUX_SPECIFIC_BASE + 0)
 #define F_GETLEASE (F_LINUX_SPECIFIC_BASE + 1)
 #define F_CANCELLK (F_LINUX_SPECIFIC_BASE + 5)
diff --git a/libc/kernel/uapi/linux/fscrypt.h b/libc/kernel/uapi/linux/fscrypt.h
index f91ce85..b4361ec 100644
--- a/libc/kernel/uapi/linux/fscrypt.h
+++ b/libc/kernel/uapi/linux/fscrypt.h
@@ -18,6 +18,7 @@
  ****************************************************************************/
 #ifndef _UAPI_LINUX_FSCRYPT_H
 #define _UAPI_LINUX_FSCRYPT_H
+#include <linux/ioctl.h>
 #include <linux/types.h>
 #define FSCRYPT_POLICY_FLAGS_PAD_4 0x00
 #define FSCRYPT_POLICY_FLAGS_PAD_8 0x01
@@ -80,10 +81,16 @@
     __u8 identifier[FSCRYPT_KEY_IDENTIFIER_SIZE];
   } u;
 };
+struct fscrypt_provisioning_key_payload {
+  __u32 type;
+  __u32 __reserved;
+  __u8 raw[];
+};
 struct fscrypt_add_key_arg {
   struct fscrypt_key_specifier key_spec;
   __u32 raw_size;
-  __u32 __reserved[8];
+  __u32 key_id;
+  __u32 __reserved[7];
 #define __FSCRYPT_ADD_KEY_FLAG_HW_WRAPPED 0x00000001
   __u32 __flags;
   __u8 raw[];
@@ -115,6 +122,7 @@
 #define FS_IOC_REMOVE_ENCRYPTION_KEY _IOWR('f', 24, struct fscrypt_remove_key_arg)
 #define FS_IOC_REMOVE_ENCRYPTION_KEY_ALL_USERS _IOWR('f', 25, struct fscrypt_remove_key_arg)
 #define FS_IOC_GET_ENCRYPTION_KEY_STATUS _IOWR('f', 26, struct fscrypt_get_key_status_arg)
+#define FS_IOC_GET_ENCRYPTION_NONCE _IOR('f', 27, __u8[16])
 #define FS_KEY_DESCRIPTOR_SIZE FSCRYPT_KEY_DESCRIPTOR_SIZE
 #define FS_POLICY_FLAGS_PAD_4 FSCRYPT_POLICY_FLAGS_PAD_4
 #define FS_POLICY_FLAGS_PAD_8 FSCRYPT_POLICY_FLAGS_PAD_8
diff --git a/libc/kernel/uapi/linux/hdlc/ioctl.h b/libc/kernel/uapi/linux/hdlc/ioctl.h
index 67b4d13..3c727c5 100644
--- a/libc/kernel/uapi/linux/hdlc/ioctl.h
+++ b/libc/kernel/uapi/linux/hdlc/ioctl.h
@@ -79,5 +79,13 @@
   unsigned int interval;
   unsigned int timeout;
 } cisco_proto;
+typedef struct {
+  unsigned short dce;
+  unsigned int modulo;
+  unsigned int window;
+  unsigned int t1;
+  unsigned int t2;
+  unsigned int n2;
+} x25_hdlc_proto;
 #endif
 #endif
diff --git a/libc/kernel/uapi/linux/hidraw.h b/libc/kernel/uapi/linux/hidraw.h
index 3ce49e1..ab7ed1c 100644
--- a/libc/kernel/uapi/linux/hidraw.h
+++ b/libc/kernel/uapi/linux/hidraw.h
@@ -36,6 +36,7 @@
 #define HIDIOCGRAWPHYS(len) _IOC(_IOC_READ, 'H', 0x05, len)
 #define HIDIOCSFEATURE(len) _IOC(_IOC_WRITE | _IOC_READ, 'H', 0x06, len)
 #define HIDIOCGFEATURE(len) _IOC(_IOC_WRITE | _IOC_READ, 'H', 0x07, len)
+#define HIDIOCGRAWUNIQ(len) _IOC(_IOC_READ, 'H', 0x08, len)
 #define HIDRAW_FIRST_MINOR 0
 #define HIDRAW_MAX_DEVICES 64
 #define HIDRAW_BUFFER_SIZE 64
diff --git a/libc/kernel/uapi/linux/idxd.h b/libc/kernel/uapi/linux/idxd.h
new file mode 100644
index 0000000..9c96af8
--- /dev/null
+++ b/libc/kernel/uapi/linux/idxd.h
@@ -0,0 +1,210 @@
+/****************************************************************************
+ ****************************************************************************
+ ***
+ ***   This header was automatically generated from a Linux kernel header
+ ***   of the same name, to make information necessary for userspace to
+ ***   call into the kernel available to libc.  It contains only constants,
+ ***   structures, and macros generated from the original header, and thus,
+ ***   contains no copyrightable information.
+ ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
+ ****************************************************************************
+ ****************************************************************************/
+#ifndef _USR_IDXD_H_
+#define _USR_IDXD_H_
+#include <stdint.h>
+#define IDXD_OP_FLAG_FENCE 0x0001
+#define IDXD_OP_FLAG_BOF 0x0002
+#define IDXD_OP_FLAG_CRAV 0x0004
+#define IDXD_OP_FLAG_RCR 0x0008
+#define IDXD_OP_FLAG_RCI 0x0010
+#define IDXD_OP_FLAG_CRSTS 0x0020
+#define IDXD_OP_FLAG_CR 0x0080
+#define IDXD_OP_FLAG_CC 0x0100
+#define IDXD_OP_FLAG_ADDR1_TCS 0x0200
+#define IDXD_OP_FLAG_ADDR2_TCS 0x0400
+#define IDXD_OP_FLAG_ADDR3_TCS 0x0800
+#define IDXD_OP_FLAG_CR_TCS 0x1000
+#define IDXD_OP_FLAG_STORD 0x2000
+#define IDXD_OP_FLAG_DRDBK 0x4000
+#define IDXD_OP_FLAG_DSTS 0x8000
+enum dsa_opcode {
+  DSA_OPCODE_NOOP = 0,
+  DSA_OPCODE_BATCH,
+  DSA_OPCODE_DRAIN,
+  DSA_OPCODE_MEMMOVE,
+  DSA_OPCODE_MEMFILL,
+  DSA_OPCODE_COMPARE,
+  DSA_OPCODE_COMPVAL,
+  DSA_OPCODE_CR_DELTA,
+  DSA_OPCODE_AP_DELTA,
+  DSA_OPCODE_DUALCAST,
+  DSA_OPCODE_CRCGEN = 0x10,
+  DSA_OPCODE_COPY_CRC,
+  DSA_OPCODE_DIF_CHECK,
+  DSA_OPCODE_DIF_INS,
+  DSA_OPCODE_DIF_STRP,
+  DSA_OPCODE_DIF_UPDT,
+  DSA_OPCODE_CFLUSH = 0x20,
+};
+enum dsa_completion_status {
+  DSA_COMP_NONE = 0,
+  DSA_COMP_SUCCESS,
+  DSA_COMP_SUCCESS_PRED,
+  DSA_COMP_PAGE_FAULT_NOBOF,
+  DSA_COMP_PAGE_FAULT_IR,
+  DSA_COMP_BATCH_FAIL,
+  DSA_COMP_BATCH_PAGE_FAULT,
+  DSA_COMP_DR_OFFSET_NOINC,
+  DSA_COMP_DR_OFFSET_ERANGE,
+  DSA_COMP_DIF_ERR,
+  DSA_COMP_BAD_OPCODE = 0x10,
+  DSA_COMP_INVALID_FLAGS,
+  DSA_COMP_NOZERO_RESERVE,
+  DSA_COMP_XFER_ERANGE,
+  DSA_COMP_DESC_CNT_ERANGE,
+  DSA_COMP_DR_ERANGE,
+  DSA_COMP_OVERLAP_BUFFERS,
+  DSA_COMP_DCAST_ERR,
+  DSA_COMP_DESCLIST_ALIGN,
+  DSA_COMP_INT_HANDLE_INVAL,
+  DSA_COMP_CRA_XLAT,
+  DSA_COMP_CRA_ALIGN,
+  DSA_COMP_ADDR_ALIGN,
+  DSA_COMP_PRIV_BAD,
+  DSA_COMP_TRAFFIC_CLASS_CONF,
+  DSA_COMP_PFAULT_RDBA,
+  DSA_COMP_HW_ERR1,
+  DSA_COMP_HW_ERR_DRB,
+  DSA_COMP_TRANSLATION_FAIL,
+};
+#define DSA_COMP_STATUS_MASK 0x7f
+#define DSA_COMP_STATUS_WRITE 0x80
+struct dsa_batch_desc {
+  uint32_t pasid : 20;
+  uint32_t rsvd : 11;
+  uint32_t priv : 1;
+  uint32_t flags : 24;
+  uint32_t opcode : 8;
+  uint64_t completion_addr;
+  uint64_t desc_list_addr;
+  uint64_t rsvd1;
+  uint32_t desc_count;
+  uint16_t interrupt_handle;
+  uint16_t rsvd2;
+  uint8_t rsvd3[24];
+} __attribute__((packed));
+struct dsa_hw_desc {
+  uint32_t pasid : 20;
+  uint32_t rsvd : 11;
+  uint32_t priv : 1;
+  uint32_t flags : 24;
+  uint32_t opcode : 8;
+  uint64_t completion_addr;
+  union {
+    uint64_t src_addr;
+    uint64_t rdback_addr;
+    uint64_t pattern;
+  };
+  union {
+    uint64_t dst_addr;
+    uint64_t rdback_addr2;
+    uint64_t src2_addr;
+    uint64_t comp_pattern;
+  };
+  uint32_t xfer_size;
+  uint16_t int_handle;
+  uint16_t rsvd1;
+  union {
+    uint8_t expected_res;
+    struct {
+      uint64_t delta_addr;
+      uint32_t max_delta_size;
+    };
+    uint32_t delta_rec_size;
+    uint64_t dest2;
+    struct {
+      uint32_t crc_seed;
+      uint32_t crc_rsvd;
+      uint64_t seed_addr;
+    };
+    struct {
+      uint8_t src_dif_flags;
+      uint8_t dif_chk_res;
+      uint8_t dif_chk_flags;
+      uint8_t dif_chk_res2[5];
+      uint32_t chk_ref_tag_seed;
+      uint16_t chk_app_tag_mask;
+      uint16_t chk_app_tag_seed;
+    };
+    struct {
+      uint8_t dif_ins_res;
+      uint8_t dest_dif_flag;
+      uint8_t dif_ins_flags;
+      uint8_t dif_ins_res2[13];
+      uint32_t ins_ref_tag_seed;
+      uint16_t ins_app_tag_mask;
+      uint16_t ins_app_tag_seed;
+    };
+    struct {
+      uint8_t src_upd_flags;
+      uint8_t upd_dest_flags;
+      uint8_t dif_upd_flags;
+      uint8_t dif_upd_res[5];
+      uint32_t src_ref_tag_seed;
+      uint16_t src_app_tag_mask;
+      uint16_t src_app_tag_seed;
+      uint32_t dest_ref_tag_seed;
+      uint16_t dest_app_tag_mask;
+      uint16_t dest_app_tag_seed;
+    };
+    uint8_t op_specific[24];
+  };
+} __attribute__((packed));
+struct dsa_raw_desc {
+  uint64_t field[8];
+} __attribute__((packed));
+struct dsa_completion_record {
+  volatile uint8_t status;
+  union {
+    uint8_t result;
+    uint8_t dif_status;
+  };
+  uint16_t rsvd;
+  uint32_t bytes_completed;
+  uint64_t fault_addr;
+  union {
+    uint16_t delta_rec_size;
+    uint16_t crc_val;
+    struct {
+      uint32_t dif_chk_ref_tag;
+      uint16_t dif_chk_app_tag_mask;
+      uint16_t dif_chk_app_tag;
+    };
+    struct {
+      uint64_t dif_ins_res;
+      uint32_t dif_ins_ref_tag;
+      uint16_t dif_ins_app_tag_mask;
+      uint16_t dif_ins_app_tag;
+    };
+    struct {
+      uint32_t dif_upd_src_ref_tag;
+      uint16_t dif_upd_src_app_tag_mask;
+      uint16_t dif_upd_src_app_tag;
+      uint32_t dif_upd_dest_ref_tag;
+      uint16_t dif_upd_dest_app_tag_mask;
+      uint16_t dif_upd_dest_app_tag;
+    };
+    uint8_t op_specific[16];
+  };
+} __attribute__((packed));
+struct dsa_raw_completion_record {
+  uint64_t field[4];
+} __attribute__((packed));
+#endif
diff --git a/libc/kernel/uapi/linux/if.h b/libc/kernel/uapi/linux/if.h
index 12967f7..0821f2b 100644
--- a/libc/kernel/uapi/linux/if.h
+++ b/libc/kernel/uapi/linux/if.h
@@ -134,6 +134,7 @@
     fr_proto __user * fr;
     fr_proto_pvc __user * fr_pvc;
     fr_proto_pvc_info __user * fr_pvc_info;
+    x25_hdlc_proto __user * x25;
     sync_serial_settings __user * sync;
     te1_settings __user * te1;
   } ifs_ifsu;
diff --git a/libc/kernel/uapi/linux/if_bonding.h b/libc/kernel/uapi/linux/if_bonding.h
index a1fa959..0079f30 100644
--- a/libc/kernel/uapi/linux/if_bonding.h
+++ b/libc/kernel/uapi/linux/if_bonding.h
@@ -50,6 +50,14 @@
 #define BOND_XMIT_POLICY_LAYER23 2
 #define BOND_XMIT_POLICY_ENCAP23 3
 #define BOND_XMIT_POLICY_ENCAP34 4
+#define LACP_STATE_LACP_ACTIVITY 0x1
+#define LACP_STATE_LACP_TIMEOUT 0x2
+#define LACP_STATE_AGGREGATION 0x4
+#define LACP_STATE_SYNCHRONIZATION 0x8
+#define LACP_STATE_COLLECTING 0x10
+#define LACP_STATE_DISTRIBUTING 0x20
+#define LACP_STATE_DEFAULTED 0x40
+#define LACP_STATE_EXPIRED 0x80
 typedef struct ifbond {
   __s32 bond_mode;
   __s32 num_slaves;
diff --git a/libc/kernel/uapi/linux/if_bridge.h b/libc/kernel/uapi/linux/if_bridge.h
index 03cc1c4..b644ad0 100644
--- a/libc/kernel/uapi/linux/if_bridge.h
+++ b/libc/kernel/uapi/linux/if_bridge.h
@@ -115,6 +115,7 @@
 #define BRIDGE_VLAN_INFO_RANGE_BEGIN (1 << 3)
 #define BRIDGE_VLAN_INFO_RANGE_END (1 << 4)
 #define BRIDGE_VLAN_INFO_BRENTRY (1 << 5)
+#define BRIDGE_VLAN_INFO_ONLY_OPTS (1 << 6)
 struct bridge_vlan_info {
   __u16 flags;
   __u16 vid;
@@ -136,6 +137,34 @@
   __u16 flags;
   __u32 pad2;
 };
+struct bridge_stp_xstats {
+  __u64 transition_blk;
+  __u64 transition_fwd;
+  __u64 rx_bpdu;
+  __u64 tx_bpdu;
+  __u64 rx_tcn;
+  __u64 tx_tcn;
+};
+struct br_vlan_msg {
+  __u8 family;
+  __u8 reserved1;
+  __u16 reserved2;
+  __u32 ifindex;
+};
+enum {
+  BRIDGE_VLANDB_UNSPEC,
+  BRIDGE_VLANDB_ENTRY,
+  __BRIDGE_VLANDB_MAX,
+};
+#define BRIDGE_VLANDB_MAX (__BRIDGE_VLANDB_MAX - 1)
+enum {
+  BRIDGE_VLANDB_ENTRY_UNSPEC,
+  BRIDGE_VLANDB_ENTRY_INFO,
+  BRIDGE_VLANDB_ENTRY_RANGE,
+  BRIDGE_VLANDB_ENTRY_STATE,
+  __BRIDGE_VLANDB_ENTRY_MAX,
+};
+#define BRIDGE_VLANDB_ENTRY_MAX (__BRIDGE_VLANDB_ENTRY_MAX - 1)
 enum {
   MDBA_UNSPEC,
   MDBA_MDB,
@@ -212,6 +241,7 @@
   BRIDGE_XSTATS_VLAN,
   BRIDGE_XSTATS_MCAST,
   BRIDGE_XSTATS_PAD,
+  BRIDGE_XSTATS_STP,
   __BRIDGE_XSTATS_MAX
 };
 #define BRIDGE_XSTATS_MAX (__BRIDGE_XSTATS_MAX - 1)
diff --git a/libc/kernel/uapi/linux/if_link.h b/libc/kernel/uapi/linux/if_link.h
index 7843fb5..52a18af 100644
--- a/libc/kernel/uapi/linux/if_link.h
+++ b/libc/kernel/uapi/linux/if_link.h
@@ -146,6 +146,7 @@
   IFLA_MAX_MTU,
   IFLA_PROP_LIST,
   IFLA_ALT_IFNAME,
+  IFLA_PERM_ADDRESS,
   __IFLA_MAX
 };
 #define IFLA_MAX (__IFLA_MAX - 1)
@@ -384,6 +385,12 @@
   __MACSEC_VALIDATE_END,
   MACSEC_VALIDATE_MAX = __MACSEC_VALIDATE_END - 1,
 };
+enum macsec_offload {
+  MACSEC_OFFLOAD_OFF = 0,
+  MACSEC_OFFLOAD_PHY = 1,
+  __MACSEC_OFFLOAD_END,
+  MACSEC_OFFLOAD_MAX = __MACSEC_OFFLOAD_END - 1,
+};
 enum {
   IFLA_IPVLAN_UNSPEC,
   IFLA_IPVLAN_MODE,
diff --git a/libc/kernel/uapi/linux/if_macsec.h b/libc/kernel/uapi/linux/if_macsec.h
index a58f531..d77bf21 100644
--- a/libc/kernel/uapi/linux/if_macsec.h
+++ b/libc/kernel/uapi/linux/if_macsec.h
@@ -40,6 +40,7 @@
   MACSEC_ATTR_RXSC_LIST,
   MACSEC_ATTR_TXSC_STATS,
   MACSEC_ATTR_SECY_STATS,
+  MACSEC_ATTR_OFFLOAD,
   __MACSEC_ATTR_END,
   NUM_MACSEC_ATTR = __MACSEC_ATTR_END,
   MACSEC_ATTR_MAX = __MACSEC_ATTR_END - 1,
@@ -88,6 +89,14 @@
   NUM_MACSEC_SA_ATTR = __MACSEC_SA_ATTR_END,
   MACSEC_SA_ATTR_MAX = __MACSEC_SA_ATTR_END - 1,
 };
+enum macsec_offload_attrs {
+  MACSEC_OFFLOAD_ATTR_UNSPEC,
+  MACSEC_OFFLOAD_ATTR_TYPE,
+  MACSEC_OFFLOAD_ATTR_PAD,
+  __MACSEC_OFFLOAD_ATTR_END,
+  NUM_MACSEC_OFFLOAD_ATTR = __MACSEC_OFFLOAD_ATTR_END,
+  MACSEC_OFFLOAD_ATTR_MAX = __MACSEC_OFFLOAD_ATTR_END - 1,
+};
 enum macsec_nl_commands {
   MACSEC_CMD_GET_TXSC,
   MACSEC_CMD_ADD_RXSC,
@@ -99,6 +108,7 @@
   MACSEC_CMD_ADD_RXSA,
   MACSEC_CMD_DEL_RXSA,
   MACSEC_CMD_UPD_RXSA,
+  MACSEC_CMD_UPD_OFFLOAD,
 };
 enum macsec_rxsc_stats_attr {
   MACSEC_RXSC_STATS_ATTR_UNSPEC,
diff --git a/libc/kernel/uapi/linux/in.h b/libc/kernel/uapi/linux/in.h
index f1dab00..99b54cc 100644
--- a/libc/kernel/uapi/linux/in.h
+++ b/libc/kernel/uapi/linux/in.h
@@ -74,8 +74,12 @@
 #define IPPROTO_UDPLITE IPPROTO_UDPLITE
   IPPROTO_MPLS = 137,
 #define IPPROTO_MPLS IPPROTO_MPLS
+  IPPROTO_ETHERNET = 143,
+#define IPPROTO_ETHERNET IPPROTO_ETHERNET
   IPPROTO_RAW = 255,
 #define IPPROTO_RAW IPPROTO_RAW
+  IPPROTO_MPTCP = 262,
+#define IPPROTO_MPTCP IPPROTO_MPTCP
   IPPROTO_MAX
 };
 #endif
diff --git a/libc/kernel/uapi/linux/incrementalfs.h b/libc/kernel/uapi/linux/incrementalfs.h
new file mode 100644
index 0000000..531760d
--- /dev/null
+++ b/libc/kernel/uapi/linux/incrementalfs.h
@@ -0,0 +1,116 @@
+/****************************************************************************
+ ****************************************************************************
+ ***
+ ***   This header was automatically generated from a Linux kernel header
+ ***   of the same name, to make information necessary for userspace to
+ ***   call into the kernel available to libc.  It contains only constants,
+ ***   structures, and macros generated from the original header, and thus,
+ ***   contains no copyrightable information.
+ ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
+ ****************************************************************************
+ ****************************************************************************/
+#ifndef _UAPI_LINUX_INCREMENTALFS_H
+#define _UAPI_LINUX_INCREMENTALFS_H
+#include <linux/limits.h>
+#include <linux/ioctl.h>
+#include <linux/types.h>
+#include <linux/xattr.h>
+#define INCFS_NAME "incremental-fs"
+#define INCFS_MAGIC_NUMBER (0x5346434e49ul)
+#define INCFS_DATA_FILE_BLOCK_SIZE 4096
+#define INCFS_HEADER_VER 1
+#define INCFS_MAX_HASH_SIZE 32
+#define INCFS_MAX_FILE_ATTR_SIZE 512
+#define INCFS_PENDING_READS_FILENAME ".pending_reads"
+#define INCFS_LOG_FILENAME ".log"
+#define INCFS_XATTR_ID_NAME (XATTR_USER_PREFIX "incfs.id")
+#define INCFS_XATTR_SIZE_NAME (XATTR_USER_PREFIX "incfs.size")
+#define INCFS_XATTR_METADATA_NAME (XATTR_USER_PREFIX "incfs.metadata")
+#define INCFS_MAX_SIGNATURE_SIZE 8096
+#define INCFS_SIGNATURE_VERSION 2
+#define INCFS_SIGNATURE_SECTIONS 2
+#define INCFS_IOCTL_BASE_CODE 'g'
+#define INCFS_IOC_CREATE_FILE _IOWR(INCFS_IOCTL_BASE_CODE, 30, struct incfs_new_file_args)
+#define INCFS_IOC_READ_FILE_SIGNATURE _IOR(INCFS_IOCTL_BASE_CODE, 31, struct incfs_get_file_sig_args)
+#define INCFS_IOC_FILL_BLOCKS _IOR(INCFS_IOCTL_BASE_CODE, 32, struct incfs_fill_blocks)
+#define INCFS_IOC_PERMIT_FILL _IOW(INCFS_IOCTL_BASE_CODE, 33, struct incfs_permit_fill)
+#define INCFS_IOC_GET_FILLED_BLOCKS _IOR(INCFS_IOCTL_BASE_CODE, 34, struct incfs_get_filled_blocks_args)
+enum incfs_compression_alg {
+  COMPRESSION_NONE = 0,
+  COMPRESSION_LZ4 = 1
+};
+enum incfs_block_flags {
+  INCFS_BLOCK_FLAGS_NONE = 0,
+  INCFS_BLOCK_FLAGS_HASH = 1,
+};
+typedef struct {
+  __u8 bytes[16];
+} incfs_uuid_t __attribute__((aligned(8)));
+struct incfs_pending_read_info {
+  incfs_uuid_t file_id;
+  __aligned_u64 timestamp_us;
+  __u32 block_index;
+  __u32 serial_number;
+};
+struct incfs_fill_block {
+  __u32 block_index;
+  __u32 data_len;
+  __aligned_u64 data;
+  __u8 compression;
+  __u8 flags;
+  __u16 reserved1;
+  __u32 reserved2;
+  __aligned_u64 reserved3;
+};
+struct incfs_fill_blocks {
+  __u64 count;
+  __aligned_u64 fill_blocks;
+};
+struct incfs_permit_fill {
+  __u32 file_descriptor;
+};
+enum incfs_hash_tree_algorithm {
+  INCFS_HASH_TREE_NONE = 0,
+  INCFS_HASH_TREE_SHA256 = 1
+};
+struct incfs_new_file_args {
+  incfs_uuid_t file_id;
+  __aligned_u64 size;
+  __u16 mode;
+  __u16 reserved1;
+  __u32 reserved2;
+  __aligned_u64 directory_path;
+  __aligned_u64 file_name;
+  __aligned_u64 file_attr;
+  __u32 file_attr_len;
+  __u32 reserved4;
+  __aligned_u64 signature_info;
+  __aligned_u64 signature_size;
+  __aligned_u64 reserved6;
+};
+struct incfs_get_file_sig_args {
+  __aligned_u64 file_signature;
+  __u32 file_signature_buf_size;
+  __u32 file_signature_len_out;
+};
+struct incfs_filled_range {
+  __u32 begin;
+  __u32 end;
+};
+struct incfs_get_filled_blocks_args {
+  __aligned_u64 range_buffer;
+  __u32 range_buffer_size;
+  __u32 start_index;
+  __u32 end_index;
+  __u32 total_blocks_out;
+  __u32 range_buffer_size_out;
+  __u32 index_out;
+};
+#endif
diff --git a/libc/kernel/uapi/linux/input-event-codes.h b/libc/kernel/uapi/linux/input-event-codes.h
index ee0e92f..46cc7f0 100644
--- a/libc/kernel/uapi/linux/input-event-codes.h
+++ b/libc/kernel/uapi/linux/input-event-codes.h
@@ -572,6 +572,7 @@
 #define KEY_DATA 0x277
 #define KEY_ONSCREEN_KEYBOARD 0x278
 #define KEY_PRIVACY_SCREEN_TOGGLE 0x279
+#define KEY_SELECTIVE_SCREENSHOT 0x27a
 #define KEY_MACRO1 0x290
 #define KEY_MACRO2 0x291
 #define KEY_MACRO3 0x292
diff --git a/libc/kernel/uapi/linux/io_uring.h b/libc/kernel/uapi/linux/io_uring.h
index 0639a80..5885312 100644
--- a/libc/kernel/uapi/linux/io_uring.h
+++ b/libc/kernel/uapi/linux/io_uring.h
@@ -40,21 +40,37 @@
     __u32 timeout_flags;
     __u32 accept_flags;
     __u32 cancel_flags;
+    __u32 open_flags;
+    __u32 statx_flags;
+    __u32 fadvise_advice;
   };
   __u64 user_data;
   union {
-    __u16 buf_index;
+    struct {
+      __u16 buf_index;
+      __u16 personality;
+    };
     __u64 __pad2[3];
   };
 };
-#define IOSQE_FIXED_FILE (1U << 0)
-#define IOSQE_IO_DRAIN (1U << 1)
-#define IOSQE_IO_LINK (1U << 2)
-#define IOSQE_IO_HARDLINK (1U << 3)
+enum {
+  IOSQE_FIXED_FILE_BIT,
+  IOSQE_IO_DRAIN_BIT,
+  IOSQE_IO_LINK_BIT,
+  IOSQE_IO_HARDLINK_BIT,
+  IOSQE_ASYNC_BIT,
+};
+#define IOSQE_FIXED_FILE (1U << IOSQE_FIXED_FILE_BIT)
+#define IOSQE_IO_DRAIN (1U << IOSQE_IO_DRAIN_BIT)
+#define IOSQE_IO_LINK (1U << IOSQE_IO_LINK_BIT)
+#define IOSQE_IO_HARDLINK (1U << IOSQE_IO_HARDLINK_BIT)
+#define IOSQE_ASYNC (1U << IOSQE_ASYNC_BIT)
 #define IORING_SETUP_IOPOLL (1U << 0)
 #define IORING_SETUP_SQPOLL (1U << 1)
 #define IORING_SETUP_SQ_AFF (1U << 2)
 #define IORING_SETUP_CQSIZE (1U << 3)
+#define IORING_SETUP_CLAMP (1U << 4)
+#define IORING_SETUP_ATTACH_WQ (1U << 5)
 enum {
   IORING_OP_NOP,
   IORING_OP_READV,
@@ -73,6 +89,19 @@
   IORING_OP_ASYNC_CANCEL,
   IORING_OP_LINK_TIMEOUT,
   IORING_OP_CONNECT,
+  IORING_OP_FALLOCATE,
+  IORING_OP_OPENAT,
+  IORING_OP_CLOSE,
+  IORING_OP_FILES_UPDATE,
+  IORING_OP_STATX,
+  IORING_OP_READ,
+  IORING_OP_WRITE,
+  IORING_OP_FADVISE,
+  IORING_OP_MADVISE,
+  IORING_OP_SEND,
+  IORING_OP_RECV,
+  IORING_OP_OPENAT2,
+  IORING_OP_EPOLL_CTL,
   IORING_OP_LAST,
 };
 #define IORING_FSYNC_DATASYNC (1U << 0)
@@ -115,13 +144,16 @@
   __u32 sq_thread_cpu;
   __u32 sq_thread_idle;
   __u32 features;
-  __u32 resv[4];
+  __u32 wq_fd;
+  __u32 resv[3];
   struct io_sqring_offsets sq_off;
   struct io_cqring_offsets cq_off;
 };
 #define IORING_FEAT_SINGLE_MMAP (1U << 0)
 #define IORING_FEAT_NODROP (1U << 1)
 #define IORING_FEAT_SUBMIT_STABLE (1U << 2)
+#define IORING_FEAT_RW_CUR_POS (1U << 3)
+#define IORING_FEAT_CUR_PERSONALITY (1U << 4)
 #define IORING_REGISTER_BUFFERS 0
 #define IORING_UNREGISTER_BUFFERS 1
 #define IORING_REGISTER_FILES 2
@@ -129,9 +161,27 @@
 #define IORING_REGISTER_EVENTFD 4
 #define IORING_UNREGISTER_EVENTFD 5
 #define IORING_REGISTER_FILES_UPDATE 6
+#define IORING_REGISTER_EVENTFD_ASYNC 7
+#define IORING_REGISTER_PROBE 8
+#define IORING_REGISTER_PERSONALITY 9
+#define IORING_UNREGISTER_PERSONALITY 10
 struct io_uring_files_update {
   __u32 offset;
   __u32 resv;
   __aligned_u64 fds;
 };
+#define IO_URING_OP_SUPPORTED (1U << 0)
+struct io_uring_probe_op {
+  __u8 op;
+  __u8 resv;
+  __u16 flags;
+  __u32 resv2;
+};
+struct io_uring_probe {
+  __u8 last_op;
+  __u8 ops_len;
+  __u16 resv;
+  __u32 resv2[3];
+  struct io_uring_probe_op ops[0];
+};
 #endif
diff --git a/libc/kernel/uapi/linux/kvm.h b/libc/kernel/uapi/linux/kvm.h
index b865936..4f40b7a 100644
--- a/libc/kernel/uapi/linux/kvm.h
+++ b/libc/kernel/uapi/linux/kvm.h
@@ -788,6 +788,7 @@
 #define KVM_CAP_PPC_GUEST_DEBUG_SSTEP 176
 #define KVM_CAP_ARM_NISV_TO_USER 177
 #define KVM_CAP_ARM_INJECT_EXT_DABT 178
+#define KVM_CAP_S390_VCPU_RESETS 179
 #ifdef KVM_CAP_IRQ_ROUTING
 struct kvm_irq_routing_irqchip {
   __u32 irqchip;
@@ -1110,6 +1111,8 @@
 #define KVM_CLEAR_DIRTY_LOG _IOWR(KVMIO, 0xc0, struct kvm_clear_dirty_log)
 #define KVM_GET_SUPPORTED_HV_CPUID _IOWR(KVMIO, 0xc1, struct kvm_cpuid2)
 #define KVM_ARM_VCPU_FINALIZE _IOW(KVMIO, 0xc2, int)
+#define KVM_S390_NORMAL_RESET _IO(KVMIO, 0xc3)
+#define KVM_S390_CLEAR_RESET _IO(KVMIO, 0xc4)
 enum sev_cmd_id {
   KVM_SEV_INIT = 0,
   KVM_SEV_ES_INIT,
diff --git a/libc/kernel/uapi/linux/magic.h b/libc/kernel/uapi/linux/magic.h
index ca1daea..439c0ac 100644
--- a/libc/kernel/uapi/linux/magic.h
+++ b/libc/kernel/uapi/linux/magic.h
@@ -93,6 +93,7 @@
 #define NSFS_MAGIC 0x6e736673
 #define BPF_FS_MAGIC 0xcafe4a11
 #define AAFS_MAGIC 0x5a3c69f0
+#define ZONEFS_MAGIC 0x5a4f4653
 #define UDF_SUPER_MAGIC 0x15013346
 #define BALLOON_KVM_MAGIC 0x13661366
 #define ZSMALLOC_MAGIC 0x58295829
diff --git a/libc/kernel/uapi/linux/mii.h b/libc/kernel/uapi/linux/mii.h
index 3c6c564..4ee4448 100644
--- a/libc/kernel/uapi/linux/mii.h
+++ b/libc/kernel/uapi/linux/mii.h
@@ -120,6 +120,16 @@
 #define NWAYTEST_RESV1 0x00ff
 #define NWAYTEST_LOOPBACK 0x0100
 #define NWAYTEST_RESV2 0xfe00
+#define ADVERTISE_SGMII 0x0001
+#define LPA_SGMII 0x0001
+#define LPA_SGMII_DPX_SPD_MASK 0x1C00
+#define LPA_SGMII_10HALF 0x0000
+#define LPA_SGMII_10FULL 0x1000
+#define LPA_SGMII_100HALF 0x0400
+#define LPA_SGMII_100FULL 0x1400
+#define LPA_SGMII_1000HALF 0x0800
+#define LPA_SGMII_1000FULL 0x1800
+#define LPA_SGMII_LINK 0x8000
 #define ADVERTISE_1000FULL 0x0200
 #define ADVERTISE_1000HALF 0x0100
 #define CTL1000_AS_MASTER 0x0800
diff --git a/libc/kernel/uapi/linux/net_tstamp.h b/libc/kernel/uapi/linux/net_tstamp.h
index 375906a..4e1508a 100644
--- a/libc/kernel/uapi/linux/net_tstamp.h
+++ b/libc/kernel/uapi/linux/net_tstamp.h
@@ -49,6 +49,7 @@
   HWTSTAMP_TX_OFF,
   HWTSTAMP_TX_ON,
   HWTSTAMP_TX_ONESTEP_SYNC,
+  HWTSTAMP_TX_ONESTEP_P2P,
 };
 enum hwtstamp_rx_filters {
   HWTSTAMP_FILTER_NONE,
diff --git a/libc/kernel/uapi/linux/netfilter/nf_conntrack_common.h b/libc/kernel/uapi/linux/netfilter/nf_conntrack_common.h
index 43d60ca..152584a 100644
--- a/libc/kernel/uapi/linux/netfilter/nf_conntrack_common.h
+++ b/libc/kernel/uapi/linux/netfilter/nf_conntrack_common.h
@@ -64,7 +64,7 @@
   IPS_HELPER = (1 << IPS_HELPER_BIT),
   IPS_OFFLOAD_BIT = 14,
   IPS_OFFLOAD = (1 << IPS_OFFLOAD_BIT),
-  IPS_UNCHANGEABLE_MASK = (IPS_NAT_DONE_MASK | IPS_NAT_MASK | IPS_EXPECTED | IPS_CONFIRMED | IPS_DYING | IPS_SEQ_ADJUST | IPS_TEMPLATE | IPS_OFFLOAD),
+  IPS_UNCHANGEABLE_MASK = (IPS_NAT_DONE_MASK | IPS_NAT_MASK | IPS_EXPECTED | IPS_CONFIRMED | IPS_DYING | IPS_SEQ_ADJUST | IPS_TEMPLATE | IPS_UNTRACKED | IPS_OFFLOAD),
   __IPS_MAX_BIT = 15,
 };
 enum ip_conntrack_events {
diff --git a/libc/kernel/uapi/linux/netfilter/nf_tables.h b/libc/kernel/uapi/linux/netfilter/nf_tables.h
index 2fe11b0..26a7b39 100644
--- a/libc/kernel/uapi/linux/netfilter/nf_tables.h
+++ b/libc/kernel/uapi/linux/netfilter/nf_tables.h
@@ -52,6 +52,7 @@
 #define NFT_REG_MAX (__NFT_REG_MAX - 1)
 #define NFT_REG_SIZE 16
 #define NFT_REG32_SIZE 4
+#define NFT_REG32_COUNT (NFT_REG32_15 - NFT_REG32_00 + 1)
 enum nft_verdicts {
   NFT_CONTINUE = - 1,
   NFT_BREAK = - 2,
@@ -172,9 +173,16 @@
 enum nft_set_desc_attributes {
   NFTA_SET_DESC_UNSPEC,
   NFTA_SET_DESC_SIZE,
+  NFTA_SET_DESC_CONCAT,
   __NFTA_SET_DESC_MAX
 };
 #define NFTA_SET_DESC_MAX (__NFTA_SET_DESC_MAX - 1)
+enum nft_set_field_attributes {
+  NFTA_SET_FIELD_UNSPEC,
+  NFTA_SET_FIELD_LEN,
+  __NFTA_SET_FIELD_MAX
+};
+#define NFTA_SET_FIELD_MAX (__NFTA_SET_FIELD_MAX - 1)
 enum nft_set_attributes {
   NFTA_SET_UNSPEC,
   NFTA_SET_TABLE,
@@ -210,6 +218,7 @@
   NFTA_SET_ELEM_EXPR,
   NFTA_SET_ELEM_PAD,
   NFTA_SET_ELEM_OBJREF,
+  NFTA_SET_ELEM_KEY_END,
   __NFTA_SET_ELEM_MAX
 };
 #define NFTA_SET_ELEM_MAX (__NFTA_SET_ELEM_MAX - 1)
@@ -256,6 +265,11 @@
   __NFTA_IMMEDIATE_MAX
 };
 #define NFTA_IMMEDIATE_MAX (__NFTA_IMMEDIATE_MAX - 1)
+enum nft_bitwise_ops {
+  NFT_BITWISE_BOOL,
+  NFT_BITWISE_LSHIFT,
+  NFT_BITWISE_RSHIFT,
+};
 enum nft_bitwise_attributes {
   NFTA_BITWISE_UNSPEC,
   NFTA_BITWISE_SREG,
@@ -263,6 +277,8 @@
   NFTA_BITWISE_LEN,
   NFTA_BITWISE_MASK,
   NFTA_BITWISE_XOR,
+  NFTA_BITWISE_OP,
+  NFTA_BITWISE_DATA,
   __NFTA_BITWISE_MAX
 };
 #define NFTA_BITWISE_MAX (__NFTA_BITWISE_MAX - 1)
@@ -425,6 +441,8 @@
   NFT_META_TIME_NS,
   NFT_META_TIME_DAY,
   NFT_META_TIME_HOUR,
+  NFT_META_SDIF,
+  NFT_META_SDIFNAME,
 };
 enum nft_rt_keys {
   NFT_RT_CLASSID,
diff --git a/libc/kernel/uapi/linux/hysdn_if.h b/libc/kernel/uapi/linux/openat2.h
similarity index 72%
rename from libc/kernel/uapi/linux/hysdn_if.h
rename to libc/kernel/uapi/linux/openat2.h
index 2aac1d0..27136af 100644
--- a/libc/kernel/uapi/linux/hysdn_if.h
+++ b/libc/kernel/uapi/linux/openat2.h
@@ -16,16 +16,17 @@
  ***
  ****************************************************************************
  ****************************************************************************/
-#define ERR_NONE 0
-#define ERR_ALREADY_BOOT 1000
-#define EPOF_BAD_MAGIC 1001
-#define ERR_BOARD_DPRAM 1002
-#define EPOF_INTERNAL 1003
-#define EPOF_BAD_IMG_SIZE 1004
-#define ERR_BOOTIMG_FAIL 1005
-#define ERR_BOOTSEQ_FAIL 1006
-#define ERR_POF_TIMEOUT 1007
-#define ERR_NOT_BOOTED 1008
-#define ERR_CONF_LONG 1009
-#define ERR_INV_CHAN 1010
-#define ERR_ASYNC_TIME 1011
+#ifndef _UAPI_LINUX_OPENAT2_H
+#define _UAPI_LINUX_OPENAT2_H
+#include <linux/types.h>
+struct open_how {
+  __u64 flags;
+  __u64 mode;
+  __u64 resolve;
+};
+#define RESOLVE_NO_XDEV 0x01
+#define RESOLVE_NO_MAGICLINKS 0x02
+#define RESOLVE_NO_SYMLINKS 0x04
+#define RESOLVE_BENEATH 0x08
+#define RESOLVE_IN_ROOT 0x10
+#endif
diff --git a/libc/kernel/uapi/linux/openvswitch.h b/libc/kernel/uapi/linux/openvswitch.h
index 99a987d..05d750a 100644
--- a/libc/kernel/uapi/linux/openvswitch.h
+++ b/libc/kernel/uapi/linux/openvswitch.h
@@ -366,6 +366,12 @@
   __be32 mpls_lse;
   __be16 mpls_ethertype;
 };
+struct ovs_action_add_mpls {
+  __be32 mpls_lse;
+  __be16 mpls_ethertype;
+  __u16 tun_flags;
+};
+#define OVS_MPLS_L3_TUNNEL_FLAG_MASK (1 << 0)
 struct ovs_action_push_vlan {
   __be16 vlan_tpid;
   __be16 vlan_tci;
@@ -439,6 +445,7 @@
   OVS_ACTION_ATTR_METER,
   OVS_ACTION_ATTR_CLONE,
   OVS_ACTION_ATTR_CHECK_PKT_LEN,
+  OVS_ACTION_ATTR_ADD_MPLS,
   __OVS_ACTION_ATTR_MAX,
 };
 #define OVS_ACTION_ATTR_MAX (__OVS_ACTION_ATTR_MAX - 1)
diff --git a/libc/kernel/uapi/linux/pci_regs.h b/libc/kernel/uapi/linux/pci_regs.h
index 5501de0..c3f2859 100644
--- a/libc/kernel/uapi/linux/pci_regs.h
+++ b/libc/kernel/uapi/linux/pci_regs.h
@@ -577,6 +577,7 @@
 #define PCI_EXP_LNKCTL2_TLS_32_0GT 0x0005
 #define PCI_EXP_LNKCTL2_ENTER_COMP 0x0010
 #define PCI_EXP_LNKCTL2_TX_MARGIN 0x0380
+#define PCI_EXP_LNKCTL2_HASD 0x0020
 #define PCI_EXP_LNKSTA2 50
 #define PCI_CAP_EXP_ENDPOINT_SIZEOF_V2 52
 #define PCI_EXP_SLTCAP2 52
diff --git a/libc/kernel/uapi/linux/pkt_sched.h b/libc/kernel/uapi/linux/pkt_sched.h
index c965928..f0bb319 100644
--- a/libc/kernel/uapi/linux/pkt_sched.h
+++ b/libc/kernel/uapi/linux/pkt_sched.h
@@ -725,6 +725,34 @@
   __u32 maxq;
   __u32 ecn_mark;
 };
+enum {
+  TCA_FQ_PIE_UNSPEC,
+  TCA_FQ_PIE_LIMIT,
+  TCA_FQ_PIE_FLOWS,
+  TCA_FQ_PIE_TARGET,
+  TCA_FQ_PIE_TUPDATE,
+  TCA_FQ_PIE_ALPHA,
+  TCA_FQ_PIE_BETA,
+  TCA_FQ_PIE_QUANTUM,
+  TCA_FQ_PIE_MEMORY_LIMIT,
+  TCA_FQ_PIE_ECN_PROB,
+  TCA_FQ_PIE_ECN,
+  TCA_FQ_PIE_BYTEMODE,
+  TCA_FQ_PIE_DQ_RATE_ESTIMATOR,
+  __TCA_FQ_PIE_MAX
+};
+#define TCA_FQ_PIE_MAX (__TCA_FQ_PIE_MAX - 1)
+struct tc_fq_pie_xstats {
+  __u32 packets_in;
+  __u32 dropped;
+  __u32 overlimit;
+  __u32 overmemory;
+  __u32 ecn_mark;
+  __u32 new_flow_count;
+  __u32 new_flows_len;
+  __u32 old_flows_len;
+  __u32 memory_usage;
+};
 struct tc_cbs_qopt {
   __u8 offload;
   __u8 _pad[3];
@@ -897,4 +925,16 @@
   __TCA_TAPRIO_ATTR_MAX,
 };
 #define TCA_TAPRIO_ATTR_MAX (__TCA_TAPRIO_ATTR_MAX - 1)
+#define TCQ_ETS_MAX_BANDS 16
+enum {
+  TCA_ETS_UNSPEC,
+  TCA_ETS_NBANDS,
+  TCA_ETS_NSTRICT,
+  TCA_ETS_QUANTA,
+  TCA_ETS_QUANTA_BAND,
+  TCA_ETS_PRIOMAP,
+  TCA_ETS_PRIOMAP_BAND,
+  __TCA_ETS_MAX,
+};
+#define TCA_ETS_MAX (__TCA_ETS_MAX - 1)
 #endif
diff --git a/libc/kernel/uapi/linux/prctl.h b/libc/kernel/uapi/linux/prctl.h
index 6e3426c..c8118da 100644
--- a/libc/kernel/uapi/linux/prctl.h
+++ b/libc/kernel/uapi/linux/prctl.h
@@ -153,6 +153,8 @@
 #define PR_SET_TAGGED_ADDR_CTRL 55
 #define PR_GET_TAGGED_ADDR_CTRL 56
 #define PR_TAGGED_ADDR_ENABLE (1UL << 0)
+#define PR_SET_IO_FLUSHER 57
+#define PR_GET_IO_FLUSHER 58
 #define PR_SET_VMA 0x53564d41
 #define PR_SET_VMA_ANON_NAME 0
 #endif
diff --git a/libc/kernel/uapi/linux/random.h b/libc/kernel/uapi/linux/random.h
index 3a5fbfd..2d3cfef 100644
--- a/libc/kernel/uapi/linux/random.h
+++ b/libc/kernel/uapi/linux/random.h
@@ -35,4 +35,5 @@
 };
 #define GRND_NONBLOCK 0x0001
 #define GRND_RANDOM 0x0002
+#define GRND_INSECURE 0x0004
 #endif
diff --git a/libc/kernel/uapi/linux/rtc.h b/libc/kernel/uapi/linux/rtc.h
index a047293..6536fff 100644
--- a/libc/kernel/uapi/linux/rtc.h
+++ b/libc/kernel/uapi/linux/rtc.h
@@ -63,7 +63,11 @@
 #define RTC_WKALM_RD _IOR('p', 0x10, struct rtc_wkalrm)
 #define RTC_PLL_GET _IOR('p', 0x11, struct rtc_pll_info)
 #define RTC_PLL_SET _IOW('p', 0x12, struct rtc_pll_info)
-#define RTC_VL_READ _IOR('p', 0x13, int)
+#define RTC_VL_DATA_INVALID BIT(0)
+#define RTC_VL_BACKUP_LOW BIT(1)
+#define RTC_VL_BACKUP_EMPTY BIT(2)
+#define RTC_VL_ACCURACY_LOW BIT(3)
+#define RTC_VL_READ _IOR('p', 0x13, unsigned int)
 #define RTC_VL_CLR _IO('p', 0x14)
 #define RTC_IRQF 0x80
 #define RTC_PF 0x40
diff --git a/libc/kernel/uapi/linux/rtnetlink.h b/libc/kernel/uapi/linux/rtnetlink.h
index 14366de..295fbed 100644
--- a/libc/kernel/uapi/linux/rtnetlink.h
+++ b/libc/kernel/uapi/linux/rtnetlink.h
@@ -151,6 +151,12 @@
 #define RTM_DELLINKPROP RTM_DELLINKPROP
   RTM_GETLINKPROP,
 #define RTM_GETLINKPROP RTM_GETLINKPROP
+  RTM_NEWVLAN = 112,
+#define RTM_NEWNVLAN RTM_NEWVLAN
+  RTM_DELVLAN,
+#define RTM_DELVLAN RTM_DELVLAN
+  RTM_GETVLAN,
+#define RTM_GETVLAN RTM_GETVLAN
   __RTM_MAX,
 #define RTM_MAX (((__RTM_MAX + 3) & ~3) - 1)
 };
@@ -230,6 +236,8 @@
 #define RTM_F_PREFIX 0x800
 #define RTM_F_LOOKUP_TABLE 0x1000
 #define RTM_F_FIB_MATCH 0x2000
+#define RTM_F_OFFLOAD 0x4000
+#define RTM_F_TRAP 0x8000
 enum rt_class_t {
   RT_TABLE_UNSPEC = 0,
   RT_TABLE_COMPAT = 252,
@@ -537,6 +545,8 @@
 #define RTNLGRP_IPV6_MROUTE_R RTNLGRP_IPV6_MROUTE_R
   RTNLGRP_NEXTHOP,
 #define RTNLGRP_NEXTHOP RTNLGRP_NEXTHOP
+  RTNLGRP_BRVLAN,
+#define RTNLGRP_BRVLAN RTNLGRP_BRVLAN
   __RTNLGRP_MAX
 };
 #define RTNLGRP_MAX (__RTNLGRP_MAX - 1)
diff --git a/libc/kernel/uapi/linux/sched.h b/libc/kernel/uapi/linux/sched.h
index b8f39dd..2afbf61 100644
--- a/libc/kernel/uapi/linux/sched.h
+++ b/libc/kernel/uapi/linux/sched.h
@@ -45,6 +45,7 @@
 #define CLONE_NEWNET 0x40000000
 #define CLONE_IO 0x80000000
 #define CLONE_CLEAR_SIGHAND 0x100000000ULL
+#define CLONE_NEWTIME 0x00000080
 #ifndef __ASSEMBLY__
 struct clone_args {
   __aligned_u64 flags;
diff --git a/libc/kernel/uapi/linux/serio.h b/libc/kernel/uapi/linux/serio.h
index 5ef9de4..605a4e4 100644
--- a/libc/kernel/uapi/linux/serio.h
+++ b/libc/kernel/uapi/linux/serio.h
@@ -18,12 +18,13 @@
  ****************************************************************************/
 #ifndef _UAPI_SERIO_H
 #define _UAPI_SERIO_H
+#include <linux/const.h>
 #include <linux/ioctl.h>
 #define SPIOCSTYPE _IOW('q', 0x01, unsigned long)
-#define SERIO_TIMEOUT BIT(0)
-#define SERIO_PARITY BIT(1)
-#define SERIO_FRAME BIT(2)
-#define SERIO_OOB_DATA BIT(3)
+#define SERIO_TIMEOUT _BITUL(0)
+#define SERIO_PARITY _BITUL(1)
+#define SERIO_FRAME _BITUL(2)
+#define SERIO_OOB_DATA _BITUL(3)
 #define SERIO_XT 0x00
 #define SERIO_8042 0x01
 #define SERIO_RS232 0x02
diff --git a/libc/kernel/uapi/linux/snmp.h b/libc/kernel/uapi/linux/snmp.h
index 3ec299a..c114544 100644
--- a/libc/kernel/uapi/linux/snmp.h
+++ b/libc/kernel/uapi/linux/snmp.h
@@ -252,6 +252,8 @@
   LINUX_MIB_TCPRCVQDROP,
   LINUX_MIB_TCPWQUEUETOOBIG,
   LINUX_MIB_TCPFASTOPENPASSIVEALTKEY,
+  LINUX_MIB_TCPTIMEOUTREHASH,
+  LINUX_MIB_TCPDUPLICATEDATAREHASH,
   __LINUX_MIB_MAX
 };
 enum {
diff --git a/libc/kernel/uapi/linux/swab.h b/libc/kernel/uapi/linux/swab.h
index da949db..e96085e 100644
--- a/libc/kernel/uapi/linux/swab.h
+++ b/libc/kernel/uapi/linux/swab.h
@@ -20,6 +20,7 @@
 #define _UAPI_LINUX_SWAB_H
 #include <linux/types.h>
 #include <linux/compiler.h>
+#include <asm/bitsperlong.h>
 #include <asm/swab.h>
 #define ___constant_swab16(x) ((__u16) ((((__u16) (x) & (__u16) 0x00ffU) << 8) | (((__u16) (x) & (__u16) 0xff00U) >> 8)))
 #define ___constant_swab32(x) ((__u32) ((((__u32) (x) & (__u32) 0x000000ffUL) << 24) | (((__u32) (x) & (__u32) 0x0000ff00UL) << 8) | (((__u32) (x) & (__u32) 0x00ff0000UL) >> 8) | (((__u32) (x) & (__u32) 0xff000000UL) >> 24)))
@@ -53,6 +54,9 @@
 #define __swab16(x) (__u16) __builtin_bswap16((__u16) (x))
 #define __swab32(x) (__u32) __builtin_bswap32((__u32) (x))
 #define __swab64(x) (__u64) __builtin_bswap64((__u64) (x))
+#if __BITS_PER_LONG == 64
+#else
+#endif
 #define __swahw32(x) (__builtin_constant_p((__u32) (x)) ? ___constant_swahw32(x) : __fswahw32(x))
 #define __swahb32(x) (__builtin_constant_p((__u32) (x)) ? ___constant_swahb32(x) : __fswahb32(x))
 static __always_inline __u16 __swab16p(const __u16 * p) {
diff --git a/libc/kernel/uapi/linux/switchtec_ioctl.h b/libc/kernel/uapi/linux/switchtec_ioctl.h
index 2143148..204839d 100644
--- a/libc/kernel/uapi/linux/switchtec_ioctl.h
+++ b/libc/kernel/uapi/linux/switchtec_ioctl.h
@@ -32,7 +32,15 @@
 #define SWITCHTEC_IOCTL_PART_VENDOR5 10
 #define SWITCHTEC_IOCTL_PART_VENDOR6 11
 #define SWITCHTEC_IOCTL_PART_VENDOR7 12
-#define SWITCHTEC_IOCTL_NUM_PARTITIONS 13
+#define SWITCHTEC_IOCTL_PART_BL2_0 13
+#define SWITCHTEC_IOCTL_PART_BL2_1 14
+#define SWITCHTEC_IOCTL_PART_MAP_0 15
+#define SWITCHTEC_IOCTL_PART_MAP_1 16
+#define SWITCHTEC_IOCTL_PART_KEY_0 17
+#define SWITCHTEC_IOCTL_PART_KEY_1 18
+#define SWITCHTEC_NUM_PARTITIONS_GEN3 13
+#define SWITCHTEC_NUM_PARTITIONS_GEN4 19
+#define SWITCHTEC_IOCTL_NUM_PARTITIONS SWITCHTEC_NUM_PARTITIONS_GEN3
 struct switchtec_ioctl_flash_info {
   __u64 flash_length;
   __u32 num_partitions;
@@ -92,7 +100,9 @@
 #define SWITCHTEC_IOCTL_EVENT_CREDIT_TIMEOUT 27
 #define SWITCHTEC_IOCTL_EVENT_LINK_STATE 28
 #define SWITCHTEC_IOCTL_EVENT_GFMS 29
-#define SWITCHTEC_IOCTL_MAX_EVENTS 30
+#define SWITCHTEC_IOCTL_EVENT_INTERCOMM_REQ_NOTIFY 30
+#define SWITCHTEC_IOCTL_EVENT_UEC 31
+#define SWITCHTEC_IOCTL_MAX_EVENTS 32
 #define SWITCHTEC_IOCTL_EVENT_LOCAL_PART_IDX - 1
 #define SWITCHTEC_IOCTL_EVENT_IDX_ALL - 2
 #define SWITCHTEC_IOCTL_EVENT_FLAG_CLEAR (1 << 0)
diff --git a/libc/kernel/uapi/linux/taskstats.h b/libc/kernel/uapi/linux/taskstats.h
index dc7791d..5f9d0cc 100644
--- a/libc/kernel/uapi/linux/taskstats.h
+++ b/libc/kernel/uapi/linux/taskstats.h
@@ -19,7 +19,7 @@
 #ifndef _LINUX_TASKSTATS_H
 #define _LINUX_TASKSTATS_H
 #include <linux/types.h>
-#define TASKSTATS_VERSION 9
+#define TASKSTATS_VERSION 10
 #define TS_COMM_LEN 32
 struct taskstats {
   __u16 version;
@@ -68,6 +68,7 @@
   __u64 freepages_delay_total;
   __u64 thrashing_count;
   __u64 thrashing_delay_total;
+  __u64 ac_btime64;
 };
 enum {
   TASKSTATS_CMD_UNSPEC = 0,
diff --git a/libc/kernel/uapi/linux/tcp.h b/libc/kernel/uapi/linux/tcp.h
index 823583d..4dbb764 100644
--- a/libc/kernel/uapi/linux/tcp.h
+++ b/libc/kernel/uapi/linux/tcp.h
@@ -217,15 +217,17 @@
   TCP_NLA_DSACK_DUPS,
   TCP_NLA_REORD_SEEN,
   TCP_NLA_SRTT,
+  TCP_NLA_TIMEOUT_REHASH,
 };
 #define TCP_MD5SIG_MAXKEYLEN 80
-#define TCP_MD5SIG_FLAG_PREFIX 1
+#define TCP_MD5SIG_FLAG_PREFIX 0x1
+#define TCP_MD5SIG_FLAG_IFINDEX 0x2
 struct tcp_md5sig {
   struct sockaddr_storage tcpm_addr;
   __u8 tcpm_flags;
   __u8 tcpm_prefixlen;
   __u16 tcpm_keylen;
-  __u32 __tcpm_pad;
+  int tcpm_ifindex;
   __u8 tcpm_key[TCP_MD5SIG_MAXKEYLEN];
 };
 struct tcp_diag_md5sig {
diff --git a/libc/kernel/uapi/linux/tee.h b/libc/kernel/uapi/linux/tee.h
index e13c231..9ddcf19 100644
--- a/libc/kernel/uapi/linux/tee.h
+++ b/libc/kernel/uapi/linux/tee.h
@@ -29,6 +29,7 @@
 #define TEE_GEN_CAP_PRIVILEGED (1 << 1)
 #define TEE_GEN_CAP_REG_MEM (1 << 2)
 #define TEE_IMPL_ID_OPTEE 1
+#define TEE_IMPL_ID_AMDTEE 2
 #define TEE_OPTEE_CAP_TZ (1 << 0)
 struct tee_ioctl_version_data {
   __u32 impl_id;
diff --git a/libc/kernel/uapi/linux/time.h b/libc/kernel/uapi/linux/time.h
index eed430b..df52295 100644
--- a/libc/kernel/uapi/linux/time.h
+++ b/libc/kernel/uapi/linux/time.h
@@ -31,13 +31,6 @@
   __kernel_old_time_t tv_sec;
   __kernel_suseconds_t tv_usec;
 };
-struct timezone {
-  int tz_minuteswest;
-  int tz_dsttime;
-};
-#define ITIMER_REAL 0
-#define ITIMER_VIRTUAL 1
-#define ITIMER_PROF 2
 struct itimerspec {
   struct timespec it_interval;
   struct timespec it_value;
@@ -46,6 +39,13 @@
   struct timeval it_interval;
   struct timeval it_value;
 };
+struct timezone {
+  int tz_minuteswest;
+  int tz_dsttime;
+};
+#define ITIMER_REAL 0
+#define ITIMER_VIRTUAL 1
+#define ITIMER_PROF 2
 #define CLOCK_REALTIME 0
 #define CLOCK_MONOTONIC 1
 #define CLOCK_PROCESS_CPUTIME_ID 2
diff --git a/libc/kernel/uapi/linux/tipc_netlink.h b/libc/kernel/uapi/linux/tipc_netlink.h
index 61577fa..10fdf5e 100644
--- a/libc/kernel/uapi/linux/tipc_netlink.h
+++ b/libc/kernel/uapi/linux/tipc_netlink.h
@@ -46,6 +46,7 @@
   TIPC_NL_UDP_GET_REMOTEIP,
   TIPC_NL_KEY_SET,
   TIPC_NL_KEY_FLUSH,
+  TIPC_NL_ADDR_LEGACY_GET,
   __TIPC_NL_CMD_MAX,
   TIPC_NL_CMD_MAX = __TIPC_NL_CMD_MAX - 1
 };
@@ -135,6 +136,7 @@
   TIPC_NLA_NET_ADDR,
   TIPC_NLA_NET_NODEID,
   TIPC_NLA_NET_NODEID_W1,
+  TIPC_NLA_NET_ADDR_LEGACY,
   __TIPC_NLA_NET_MAX,
   TIPC_NLA_NET_MAX = __TIPC_NLA_NET_MAX - 1
 };
diff --git a/libc/kernel/uapi/linux/udp.h b/libc/kernel/uapi/linux/udp.h
index 278cf6c..802c686 100644
--- a/libc/kernel/uapi/linux/udp.h
+++ b/libc/kernel/uapi/linux/udp.h
@@ -37,4 +37,5 @@
 #define UDP_ENCAP_GTP0 4
 #define UDP_ENCAP_GTP1U 5
 #define UDP_ENCAP_RXRPC 6
+#define TCP_ENCAP_ESPINTCP 7
 #endif
diff --git a/libc/kernel/uapi/linux/usb/charger.h b/libc/kernel/uapi/linux/usb/charger.h
index 0810aab..e53f7d6 100644
--- a/libc/kernel/uapi/linux/usb/charger.h
+++ b/libc/kernel/uapi/linux/usb/charger.h
@@ -19,15 +19,15 @@
 #ifndef _UAPI__LINUX_USB_CHARGER_H
 #define _UAPI__LINUX_USB_CHARGER_H
 enum usb_charger_type {
-  UNKNOWN_TYPE,
-  SDP_TYPE,
-  DCP_TYPE,
-  CDP_TYPE,
-  ACA_TYPE,
+  UNKNOWN_TYPE = 0,
+  SDP_TYPE = 1,
+  DCP_TYPE = 2,
+  CDP_TYPE = 3,
+  ACA_TYPE = 4,
 };
 enum usb_charger_state {
-  USB_CHARGER_DEFAULT,
-  USB_CHARGER_PRESENT,
-  USB_CHARGER_ABSENT,
+  USB_CHARGER_DEFAULT = 0,
+  USB_CHARGER_PRESENT = 1,
+  USB_CHARGER_ABSENT = 2,
 };
 #endif
diff --git a/libc/kernel/uapi/linux/version.h b/libc/kernel/uapi/linux/version.h
index 471dcd7..e63a1af 100644
--- a/libc/kernel/uapi/linux/version.h
+++ b/libc/kernel/uapi/linux/version.h
@@ -16,5 +16,5 @@
  ***
  ****************************************************************************
  ****************************************************************************/
-#define LINUX_VERSION_CODE 328960
+#define LINUX_VERSION_CODE 329216
 #define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))
diff --git a/libc/kernel/uapi/linux/vm_sockets.h b/libc/kernel/uapi/linux/vm_sockets.h
index 87e4ba0..3dc4bcf 100644
--- a/libc/kernel/uapi/linux/vm_sockets.h
+++ b/libc/kernel/uapi/linux/vm_sockets.h
@@ -29,7 +29,7 @@
 #define VMADDR_CID_ANY - 1U
 #define VMADDR_PORT_ANY - 1U
 #define VMADDR_CID_HYPERVISOR 0
-#define VMADDR_CID_RESERVED 1
+#define VMADDR_CID_LOCAL 1
 #define VMADDR_CID_HOST 2
 #define VM_SOCKETS_INVALID_VERSION - 1U
 #define VM_SOCKETS_VERSION_EPOCH(_v) (((_v) & 0xFF000000) >> 24)
diff --git a/libc/kernel/uapi/linux/vsoc_shm.h b/libc/kernel/uapi/linux/vsoc_shm.h
deleted file mode 100644
index 467b89b..0000000
--- a/libc/kernel/uapi/linux/vsoc_shm.h
+++ /dev/null
@@ -1,84 +0,0 @@
-/****************************************************************************
- ****************************************************************************
- ***
- ***   This header was automatically generated from a Linux kernel header
- ***   of the same name, to make information necessary for userspace to
- ***   call into the kernel available to libc.  It contains only constants,
- ***   structures, and macros generated from the original header, and thus,
- ***   contains no copyrightable information.
- ***
- ***   To edit the content of this header, modify the corresponding
- ***   source file (e.g. under external/kernel-headers/original/) then
- ***   run bionic/libc/kernel/tools/update_all.py
- ***
- ***   Any manual change here will be lost the next time this script will
- ***   be run. You've been warned!
- ***
- ****************************************************************************
- ****************************************************************************/
-#ifndef _UAPI_LINUX_VSOC_SHM_H
-#define _UAPI_LINUX_VSOC_SHM_H
-#include <linux/types.h>
-struct fd_scoped_permission {
-  __u32 begin_offset;
-  __u32 end_offset;
-  __u32 owner_offset;
-  __u32 owned_value;
-};
-#define VSOC_REGION_FREE ((__u32) 0)
-struct fd_scoped_permission_arg {
-  struct fd_scoped_permission perm;
-  __s32 managed_region_fd;
-};
-#define VSOC_NODE_FREE ((__u32) 0)
-struct vsoc_signal_table_layout {
-  __u32 num_nodes_lg2;
-  __u32 futex_uaddr_table_offset;
-  __u32 interrupt_signalled_offset;
-};
-#define VSOC_REGION_WHOLE ((__s32) 0)
-#define VSOC_DEVICE_NAME_SZ 16
-struct vsoc_device_region {
-  __u16 current_version;
-  __u16 min_compatible_version;
-  __u32 region_begin_offset;
-  __u32 region_end_offset;
-  __u32 offset_of_region_data;
-  struct vsoc_signal_table_layout guest_to_host_signal_table;
-  struct vsoc_signal_table_layout host_to_guest_signal_table;
-  char device_name[VSOC_DEVICE_NAME_SZ];
-  __u32 managed_by;
-};
-struct vsoc_shm_layout_descriptor {
-  __u16 major_version;
-  __u16 minor_version;
-  __u32 size;
-  __u32 region_count;
-  __u32 vsoc_region_desc_offset;
-};
-#define CURRENT_VSOC_LAYOUT_MAJOR_VERSION 2
-#define CURRENT_VSOC_LAYOUT_MINOR_VERSION 0
-#define VSOC_CREATE_FD_SCOPED_PERMISSION _IOW(0xF5, 0, struct fd_scoped_permission)
-#define VSOC_GET_FD_SCOPED_PERMISSION _IOR(0xF5, 1, struct fd_scoped_permission)
-#define VSOC_MAYBE_SEND_INTERRUPT_TO_HOST _IO(0xF5, 2)
-#define VSOC_WAIT_FOR_INCOMING_INTERRUPT _IO(0xF5, 3)
-#define VSOC_DESCRIBE_REGION _IOR(0xF5, 4, struct vsoc_device_region)
-#define VSOC_SELF_INTERRUPT _IO(0xF5, 5)
-#define VSOC_SEND_INTERRUPT_TO_HOST _IO(0xF5, 6)
-enum wait_types {
-  VSOC_WAIT_UNDEFINED = 0,
-  VSOC_WAIT_IF_EQUAL = 1,
-  VSOC_WAIT_IF_EQUAL_TIMEOUT = 2
-};
-struct vsoc_cond_wait {
-  __u32 offset;
-  __u32 value;
-  __u64 wake_time_sec;
-  __u32 wake_time_nsec;
-  __u32 wait_type;
-  __u32 wakes;
-  __u32 reserved_1;
-};
-#define VSOC_COND_WAIT _IOWR(0xF5, 7, struct vsoc_cond_wait)
-#define VSOC_COND_WAKE _IO(0xF5, 8)
-#endif
diff --git a/libc/kernel/uapi/linux/wireguard.h b/libc/kernel/uapi/linux/wireguard.h
new file mode 100644
index 0000000..6a4128b
--- /dev/null
+++ b/libc/kernel/uapi/linux/wireguard.h
@@ -0,0 +1,76 @@
+/****************************************************************************
+ ****************************************************************************
+ ***
+ ***   This header was automatically generated from a Linux kernel header
+ ***   of the same name, to make information necessary for userspace to
+ ***   call into the kernel available to libc.  It contains only constants,
+ ***   structures, and macros generated from the original header, and thus,
+ ***   contains no copyrightable information.
+ ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
+ ****************************************************************************
+ ****************************************************************************/
+#ifndef _WG_UAPI_WIREGUARD_H
+#define _WG_UAPI_WIREGUARD_H
+#define WG_GENL_NAME "wireguard"
+#define WG_GENL_VERSION 1
+#define WG_KEY_LEN 32
+enum wg_cmd {
+  WG_CMD_GET_DEVICE,
+  WG_CMD_SET_DEVICE,
+  __WG_CMD_MAX
+};
+#define WG_CMD_MAX (__WG_CMD_MAX - 1)
+enum wgdevice_flag {
+  WGDEVICE_F_REPLACE_PEERS = 1U << 0,
+  __WGDEVICE_F_ALL = WGDEVICE_F_REPLACE_PEERS
+};
+enum wgdevice_attribute {
+  WGDEVICE_A_UNSPEC,
+  WGDEVICE_A_IFINDEX,
+  WGDEVICE_A_IFNAME,
+  WGDEVICE_A_PRIVATE_KEY,
+  WGDEVICE_A_PUBLIC_KEY,
+  WGDEVICE_A_FLAGS,
+  WGDEVICE_A_LISTEN_PORT,
+  WGDEVICE_A_FWMARK,
+  WGDEVICE_A_PEERS,
+  __WGDEVICE_A_LAST
+};
+#define WGDEVICE_A_MAX (__WGDEVICE_A_LAST - 1)
+enum wgpeer_flag {
+  WGPEER_F_REMOVE_ME = 1U << 0,
+  WGPEER_F_REPLACE_ALLOWEDIPS = 1U << 1,
+  WGPEER_F_UPDATE_ONLY = 1U << 2,
+  __WGPEER_F_ALL = WGPEER_F_REMOVE_ME | WGPEER_F_REPLACE_ALLOWEDIPS | WGPEER_F_UPDATE_ONLY
+};
+enum wgpeer_attribute {
+  WGPEER_A_UNSPEC,
+  WGPEER_A_PUBLIC_KEY,
+  WGPEER_A_PRESHARED_KEY,
+  WGPEER_A_FLAGS,
+  WGPEER_A_ENDPOINT,
+  WGPEER_A_PERSISTENT_KEEPALIVE_INTERVAL,
+  WGPEER_A_LAST_HANDSHAKE_TIME,
+  WGPEER_A_RX_BYTES,
+  WGPEER_A_TX_BYTES,
+  WGPEER_A_ALLOWEDIPS,
+  WGPEER_A_PROTOCOL_VERSION,
+  __WGPEER_A_LAST
+};
+#define WGPEER_A_MAX (__WGPEER_A_LAST - 1)
+enum wgallowedip_attribute {
+  WGALLOWEDIP_A_UNSPEC,
+  WGALLOWEDIP_A_FAMILY,
+  WGALLOWEDIP_A_IPADDR,
+  WGALLOWEDIP_A_CIDR_MASK,
+  __WGALLOWEDIP_A_LAST
+};
+#define WGALLOWEDIP_A_MAX (__WGALLOWEDIP_A_LAST - 1)
+#endif
diff --git a/libc/kernel/uapi/linux/hysdn_if.h b/libc/kernel/uapi/misc/pvpanic.h
similarity index 72%
copy from libc/kernel/uapi/linux/hysdn_if.h
copy to libc/kernel/uapi/misc/pvpanic.h
index 2aac1d0..18edcd8 100644
--- a/libc/kernel/uapi/linux/hysdn_if.h
+++ b/libc/kernel/uapi/misc/pvpanic.h
@@ -16,16 +16,8 @@
  ***
  ****************************************************************************
  ****************************************************************************/
-#define ERR_NONE 0
-#define ERR_ALREADY_BOOT 1000
-#define EPOF_BAD_MAGIC 1001
-#define ERR_BOARD_DPRAM 1002
-#define EPOF_INTERNAL 1003
-#define EPOF_BAD_IMG_SIZE 1004
-#define ERR_BOOTIMG_FAIL 1005
-#define ERR_BOOTSEQ_FAIL 1006
-#define ERR_POF_TIMEOUT 1007
-#define ERR_NOT_BOOTED 1008
-#define ERR_CONF_LONG 1009
-#define ERR_INV_CHAN 1010
-#define ERR_ASYNC_TIME 1011
+#ifndef __PVPANIC_H__
+#define __PVPANIC_H__
+#define PVPANIC_PANICKED (1 << 0)
+#define PVPANIC_CRASH_LOADED (1 << 1)
+#endif
diff --git a/libc/kernel/uapi/rdma/ib_user_ioctl_cmds.h b/libc/kernel/uapi/rdma/ib_user_ioctl_cmds.h
index ebf8b7c..3933841 100644
--- a/libc/kernel/uapi/rdma/ib_user_ioctl_cmds.h
+++ b/libc/kernel/uapi/rdma/ib_user_ioctl_cmds.h
@@ -39,6 +39,7 @@
   UVERBS_OBJECT_FLOW_ACTION,
   UVERBS_OBJECT_DM,
   UVERBS_OBJECT_COUNTERS,
+  UVERBS_OBJECT_ASYNC_EVENT,
 };
 enum {
   UVERBS_ATTR_UHW_IN = UVERBS_UDATA_DRIVER_DATA_FLAG,
@@ -48,6 +49,7 @@
   UVERBS_METHOD_INVOKE_WRITE,
   UVERBS_METHOD_INFO_HANDLES,
   UVERBS_METHOD_QUERY_PORT,
+  UVERBS_METHOD_GET_CONTEXT,
 };
 enum uverbs_attrs_invoke_write_cmd_attr_ids {
   UVERBS_ATTR_CORE_IN,
@@ -58,6 +60,10 @@
   UVERBS_ATTR_QUERY_PORT_PORT_NUM,
   UVERBS_ATTR_QUERY_PORT_RESP,
 };
+enum uverbs_attrs_get_context_attr_ids {
+  UVERBS_ATTR_GET_CONTEXT_NUM_COMP_VECTORS,
+  UVERBS_ATTR_GET_CONTEXT_CORE_SUPPORT,
+};
 enum uverbs_attrs_create_cq_cmd_attr_ids {
   UVERBS_ATTR_CREATE_CQ_HANDLE,
   UVERBS_ATTR_CREATE_CQ_CQE,
@@ -187,4 +193,10 @@
 enum uverbs_attrs_flow_destroy_ids {
   UVERBS_ATTR_DESTROY_FLOW_HANDLE,
 };
+enum uverbs_method_async_event {
+  UVERBS_METHOD_ASYNC_EVENT_ALLOC,
+};
+enum uverbs_attrs_async_event_create {
+  UVERBS_ATTR_ASYNC_EVENT_ALLOC_FD_HANDLE,
+};
 #endif
diff --git a/libc/kernel/uapi/rdma/ib_user_ioctl_verbs.h b/libc/kernel/uapi/rdma/ib_user_ioctl_verbs.h
index 1394ed7..ddf2abd 100644
--- a/libc/kernel/uapi/rdma/ib_user_ioctl_verbs.h
+++ b/libc/kernel/uapi/rdma/ib_user_ioctl_verbs.h
@@ -23,6 +23,11 @@
 #ifndef RDMA_UAPI_PTR
 #define RDMA_UAPI_PTR(_type,_name) __aligned_u64 _name
 #endif
+#define IB_UVERBS_ACCESS_OPTIONAL_FIRST (1 << 20)
+#define IB_UVERBS_ACCESS_OPTIONAL_LAST (1 << 29)
+enum ib_uverbs_core_support {
+  IB_UVERBS_CORE_SUPPORT_OPTIONAL_MR_ACCESS = 1 << 0,
+};
 enum ib_uverbs_access_flags {
   IB_UVERBS_ACCESS_LOCAL_WRITE = 1 << 0,
   IB_UVERBS_ACCESS_REMOTE_WRITE = 1 << 1,
@@ -32,6 +37,8 @@
   IB_UVERBS_ACCESS_ZERO_BASED = 1 << 5,
   IB_UVERBS_ACCESS_ON_DEMAND = 1 << 6,
   IB_UVERBS_ACCESS_HUGETLB = 1 << 7,
+  IB_UVERBS_ACCESS_RELAXED_ORDERING = IB_UVERBS_ACCESS_OPTIONAL_FIRST,
+  IB_UVERBS_ACCESS_OPTIONAL_RANGE = ((IB_UVERBS_ACCESS_OPTIONAL_LAST << 1) - 1) & ~(IB_UVERBS_ACCESS_OPTIONAL_FIRST - 1)
 };
 enum ib_uverbs_query_port_cap_flags {
   IB_UVERBS_PCF_SM = 1 << 1,
diff --git a/libc/kernel/uapi/rdma/mlx5_user_ioctl_cmds.h b/libc/kernel/uapi/rdma/mlx5_user_ioctl_cmds.h
index 1cd3339..b017e73 100644
--- a/libc/kernel/uapi/rdma/mlx5_user_ioctl_cmds.h
+++ b/libc/kernel/uapi/rdma/mlx5_user_ioctl_cmds.h
@@ -85,6 +85,19 @@
   MLX5_IB_METHOD_DEVX_OBJ_QUERY,
   MLX5_IB_METHOD_DEVX_OBJ_ASYNC_QUERY,
 };
+enum mlx5_ib_var_alloc_attrs {
+  MLX5_IB_ATTR_VAR_OBJ_ALLOC_HANDLE = (1U << UVERBS_ID_NS_SHIFT),
+  MLX5_IB_ATTR_VAR_OBJ_ALLOC_MMAP_OFFSET,
+  MLX5_IB_ATTR_VAR_OBJ_ALLOC_MMAP_LENGTH,
+  MLX5_IB_ATTR_VAR_OBJ_ALLOC_PAGE_ID,
+};
+enum mlx5_ib_var_obj_destroy_attrs {
+  MLX5_IB_ATTR_VAR_OBJ_DESTROY_HANDLE = (1U << UVERBS_ID_NS_SHIFT),
+};
+enum mlx5_ib_var_obj_methods {
+  MLX5_IB_METHOD_VAR_OBJ_ALLOC = (1U << UVERBS_ID_NS_SHIFT),
+  MLX5_IB_METHOD_VAR_OBJ_DESTROY,
+};
 enum mlx5_ib_devx_umem_reg_attrs {
   MLX5_IB_ATTR_DEVX_UMEM_REG_HANDLE = (1U << UVERBS_ID_NS_SHIFT),
   MLX5_IB_ATTR_DEVX_UMEM_REG_ADDR,
@@ -119,6 +132,7 @@
   MLX5_IB_OBJECT_FLOW_MATCHER,
   MLX5_IB_OBJECT_DEVX_ASYNC_CMD_FD,
   MLX5_IB_OBJECT_DEVX_ASYNC_EVENT_FD,
+  MLX5_IB_OBJECT_VAR,
 };
 enum mlx5_ib_flow_matcher_create_attrs {
   MLX5_IB_ATTR_FLOW_MATCHER_CREATE_HANDLE = (1U << UVERBS_ID_NS_SHIFT),
diff --git a/libc/kernel/uapi/rdma/qedr-abi.h b/libc/kernel/uapi/rdma/qedr-abi.h
index fd96309..2e666f3 100644
--- a/libc/kernel/uapi/rdma/qedr-abi.h
+++ b/libc/kernel/uapi/rdma/qedr-abi.h
@@ -28,6 +28,16 @@
   __u32 context_flags;
   __u32 reserved;
 };
+#define QEDR_LDPM_MAX_SIZE (8192)
+#define QEDR_EDPM_TRANS_SIZE (64)
+enum qedr_rdma_dpm_type {
+  QEDR_DPM_TYPE_NONE = 0,
+  QEDR_DPM_TYPE_ROCE_ENHANCED = 1 << 0,
+  QEDR_DPM_TYPE_ROCE_LEGACY = 1 << 1,
+  QEDR_DPM_TYPE_IWARP_LEGACY = 1 << 2,
+  QEDR_DPM_TYPE_RESERVED = 1 << 3,
+  QEDR_DPM_SIZES_SET = 1 << 4,
+};
 struct qedr_alloc_ucontext_resp {
   __aligned_u64 db_pa;
   __u32 db_size;
@@ -38,10 +48,12 @@
   __u32 sges_per_recv_wr;
   __u32 sges_per_srq_wr;
   __u32 max_cqes;
-  __u8 dpm_enabled;
+  __u8 dpm_flags;
   __u8 wids_enabled;
   __u16 wid_count;
-  __u32 reserved;
+  __u16 ldpm_limit_size;
+  __u8 edpm_trans_size;
+  __u8 reserved;
 };
 struct qedr_alloc_pd_ureq {
   __aligned_u64 rsvd1;
diff --git a/libc/kernel/uapi/scsi/scsi_bsg_ufs.h b/libc/kernel/uapi/scsi/scsi_bsg_ufs.h
index 177cae9..ae5c757 100644
--- a/libc/kernel/uapi/scsi/scsi_bsg_ufs.h
+++ b/libc/kernel/uapi/scsi/scsi_bsg_ufs.h
@@ -46,7 +46,6 @@
   union {
     struct utp_upiu_cmd sc;
     struct utp_upiu_query qr;
-    struct utp_upiu_query tr;
     struct utp_upiu_query uc;
   };
 };
diff --git a/libc/kernel/uapi/sound/asoc.h b/libc/kernel/uapi/sound/asoc.h
index e46c4b5..706fddc 100644
--- a/libc/kernel/uapi/sound/asoc.h
+++ b/libc/kernel/uapi/sound/asoc.h
@@ -19,7 +19,6 @@
 #ifndef __LINUX_UAPI_SND_ASOC_H
 #define __LINUX_UAPI_SND_ASOC_H
 #include <linux/types.h>
-#include <sound/asound.h>
 #define SND_SOC_TPLG_MAX_CHAN 8
 #define SND_SOC_TPLG_MAX_FORMATS 16
 #define SND_SOC_TPLG_STREAM_CONFIG_MAX 8
diff --git a/libc/kernel/uapi/sound/asound.h b/libc/kernel/uapi/sound/asound.h
index abc81dd..397cccc 100644
--- a/libc/kernel/uapi/sound/asound.h
+++ b/libc/kernel/uapi/sound/asound.h
@@ -20,7 +20,9 @@
 #define _UAPI__SOUND_ASOUND_H
 #ifdef __linux__
 #include <linux/types.h>
+#include <asm/byteorder.h>
 #else
+#include <endian.h>
 #include <sys/ioctl.h>
 #endif
 #include <stdlib.h>
@@ -101,7 +103,7 @@
 #define SNDRV_HWDEP_IOCTL_INFO _IOR('H', 0x01, struct snd_hwdep_info)
 #define SNDRV_HWDEP_IOCTL_DSP_STATUS _IOR('H', 0x02, struct snd_hwdep_dsp_status)
 #define SNDRV_HWDEP_IOCTL_DSP_LOAD _IOW('H', 0x03, struct snd_hwdep_dsp_image)
-#define SNDRV_PCM_VERSION SNDRV_PROTOCOL_VERSION(2, 0, 14)
+#define SNDRV_PCM_VERSION SNDRV_PROTOCOL_VERSION(2, 0, 15)
 typedef unsigned long snd_pcm_uframes_t;
 typedef signed long snd_pcm_sframes_t;
 enum {
@@ -234,6 +236,9 @@
 #define SNDRV_PCM_INFO_HAS_LINK_SYNCHRONIZED_ATIME 0x08000000
 #define SNDRV_PCM_INFO_DRAIN_TRIGGER 0x40000000
 #define SNDRV_PCM_INFO_FIFO_IN_FRAMES 0x80000000
+#if __BITS_PER_LONG == 32 && defined(__USE_TIME_BITS64)
+#define __SND_STRUCT_TIME64
+#endif
 typedef int __bitwise snd_pcm_state_t;
 #define SNDRV_PCM_STATE_OPEN ((__force snd_pcm_state_t) 0)
 #define SNDRV_PCM_STATE_SETUP ((__force snd_pcm_state_t) 1)
@@ -247,8 +252,17 @@
 #define SNDRV_PCM_STATE_LAST SNDRV_PCM_STATE_DISCONNECTED
 enum {
   SNDRV_PCM_MMAP_OFFSET_DATA = 0x00000000,
-  SNDRV_PCM_MMAP_OFFSET_STATUS = 0x80000000,
-  SNDRV_PCM_MMAP_OFFSET_CONTROL = 0x81000000,
+  SNDRV_PCM_MMAP_OFFSET_STATUS_OLD = 0x80000000,
+  SNDRV_PCM_MMAP_OFFSET_CONTROL_OLD = 0x81000000,
+  SNDRV_PCM_MMAP_OFFSET_STATUS_NEW = 0x82000000,
+  SNDRV_PCM_MMAP_OFFSET_CONTROL_NEW = 0x83000000,
+#ifdef __SND_STRUCT_TIME64
+  SNDRV_PCM_MMAP_OFFSET_STATUS = SNDRV_PCM_MMAP_OFFSET_STATUS_NEW,
+  SNDRV_PCM_MMAP_OFFSET_CONTROL = SNDRV_PCM_MMAP_OFFSET_CONTROL_NEW,
+#else
+  SNDRV_PCM_MMAP_OFFSET_STATUS = SNDRV_PCM_MMAP_OFFSET_STATUS_OLD,
+  SNDRV_PCM_MMAP_OFFSET_CONTROL = SNDRV_PCM_MMAP_OFFSET_CONTROL_OLD,
+#endif
 };
 union snd_pcm_sync_id {
   unsigned char id[16];
@@ -351,8 +365,12 @@
   SNDRV_PCM_AUDIO_TSTAMP_TYPE_LINK_SYNCHRONIZED = 5,
   SNDRV_PCM_AUDIO_TSTAMP_TYPE_LAST = SNDRV_PCM_AUDIO_TSTAMP_TYPE_LINK_SYNCHRONIZED
 };
+typedef struct {
+  unsigned char pad[sizeof(time_t) - sizeof(int)];
+} __time_pad;
 struct snd_pcm_status {
   snd_pcm_state_t state;
+  __time_pad pad1;
   struct timespec trigger_tstamp;
   struct timespec tstamp;
   snd_pcm_uframes_t appl_ptr;
@@ -368,29 +386,87 @@
   __u32 audio_tstamp_accuracy;
   unsigned char reserved[52 - 2 * sizeof(struct timespec)];
 };
-struct snd_pcm_mmap_status {
+#ifdef __SND_STRUCT_TIME64
+#define __snd_pcm_mmap_status64 snd_pcm_mmap_status
+#define __snd_pcm_mmap_control64 snd_pcm_mmap_control
+#define __snd_pcm_sync_ptr64 snd_pcm_sync_ptr
+#define __snd_timespec64 timespec
+struct __snd_timespec {
+  __s32 tv_sec;
+  __s32 tv_nsec;
+};
+#else
+#define __snd_pcm_mmap_status snd_pcm_mmap_status
+#define __snd_pcm_mmap_control snd_pcm_mmap_control
+#define __snd_pcm_sync_ptr snd_pcm_sync_ptr
+#define __snd_timespec timespec
+struct __snd_timespec64 {
+  __s64 tv_sec;
+  __s64 tv_nsec;
+};
+#endif
+struct __snd_pcm_mmap_status {
   snd_pcm_state_t state;
   int pad1;
   snd_pcm_uframes_t hw_ptr;
-  struct timespec tstamp;
+  struct __snd_timespec tstamp;
   snd_pcm_state_t suspended_state;
-  struct timespec audio_tstamp;
+  struct __snd_timespec audio_tstamp;
 };
-struct snd_pcm_mmap_control {
+struct __snd_pcm_mmap_control {
   snd_pcm_uframes_t appl_ptr;
   snd_pcm_uframes_t avail_min;
 };
 #define SNDRV_PCM_SYNC_PTR_HWSYNC (1 << 0)
 #define SNDRV_PCM_SYNC_PTR_APPL (1 << 1)
 #define SNDRV_PCM_SYNC_PTR_AVAIL_MIN (1 << 2)
-struct snd_pcm_sync_ptr {
+struct __snd_pcm_sync_ptr {
   unsigned int flags;
   union {
-    struct snd_pcm_mmap_status status;
+    struct __snd_pcm_mmap_status status;
     unsigned char reserved[64];
   } s;
   union {
-    struct snd_pcm_mmap_control control;
+    struct __snd_pcm_mmap_control control;
+    unsigned char reserved[64];
+  } c;
+};
+#if defined(__BYTE_ORDER) ? __BYTE_ORDER == __BIG_ENDIAN : defined(__BIG_ENDIAN)
+typedef char __pad_before_uframe[sizeof(__u64) - sizeof(snd_pcm_uframes_t)];
+typedef char __pad_after_uframe[0];
+#endif
+#if defined(__BYTE_ORDER) ? __BYTE_ORDER == __LITTLE_ENDIAN : defined(__LITTLE_ENDIAN)
+typedef char __pad_before_uframe[0];
+typedef char __pad_after_uframe[sizeof(__u64) - sizeof(snd_pcm_uframes_t)];
+#endif
+struct __snd_pcm_mmap_status64 {
+  snd_pcm_state_t state;
+  __u32 pad1;
+  __pad_before_uframe __pad1;
+  snd_pcm_uframes_t hw_ptr;
+  __pad_after_uframe __pad2;
+  struct __snd_timespec64 tstamp;
+  snd_pcm_state_t suspended_state;
+  __u32 pad3;
+  struct __snd_timespec64 audio_tstamp;
+};
+struct __snd_pcm_mmap_control64 {
+  __pad_before_uframe __pad1;
+  snd_pcm_uframes_t appl_ptr;
+  __pad_before_uframe __pad2;
+  __pad_before_uframe __pad3;
+  snd_pcm_uframes_t avail_min;
+  __pad_after_uframe __pad4;
+};
+struct __snd_pcm_sync_ptr64 {
+  __u32 flags;
+  __u32 pad1;
+  union {
+    struct __snd_pcm_mmap_status64 status;
+    unsigned char reserved[64];
+  } s;
+  union {
+    struct __snd_pcm_mmap_control64 control;
     unsigned char reserved[64];
   } c;
 };
@@ -465,6 +541,8 @@
 #define SNDRV_PCM_IOCTL_STATUS _IOR('A', 0x20, struct snd_pcm_status)
 #define SNDRV_PCM_IOCTL_DELAY _IOR('A', 0x21, snd_pcm_sframes_t)
 #define SNDRV_PCM_IOCTL_HWSYNC _IO('A', 0x22)
+#define __SNDRV_PCM_IOCTL_SYNC_PTR _IOWR('A', 0x23, struct __snd_pcm_sync_ptr)
+#define __SNDRV_PCM_IOCTL_SYNC_PTR64 _IOWR('A', 0x23, struct __snd_pcm_sync_ptr64)
 #define SNDRV_PCM_IOCTL_SYNC_PTR _IOWR('A', 0x23, struct snd_pcm_sync_ptr)
 #define SNDRV_PCM_IOCTL_STATUS_EXT _IOWR('A', 0x24, struct snd_pcm_status)
 #define SNDRV_PCM_IOCTL_CHANNEL_INFO _IOR('A', 0x32, struct snd_pcm_channel_info)
@@ -484,7 +562,7 @@
 #define SNDRV_PCM_IOCTL_READN_FRAMES _IOR('A', 0x53, struct snd_xfern)
 #define SNDRV_PCM_IOCTL_LINK _IOW('A', 0x60, int)
 #define SNDRV_PCM_IOCTL_UNLINK _IO('A', 0x61)
-#define SNDRV_RAWMIDI_VERSION SNDRV_PROTOCOL_VERSION(2, 0, 0)
+#define SNDRV_RAWMIDI_VERSION SNDRV_PROTOCOL_VERSION(2, 0, 1)
 enum {
   SNDRV_RAWMIDI_STREAM_OUTPUT = 0,
   SNDRV_RAWMIDI_STREAM_INPUT,
@@ -515,6 +593,7 @@
 };
 struct snd_rawmidi_status {
   int stream;
+  __time_pad pad1;
   struct timespec tstamp;
   size_t avail;
   size_t xruns;
@@ -526,7 +605,7 @@
 #define SNDRV_RAWMIDI_IOCTL_STATUS _IOWR('W', 0x20, struct snd_rawmidi_status)
 #define SNDRV_RAWMIDI_IOCTL_DROP _IOW('W', 0x30, int)
 #define SNDRV_RAWMIDI_IOCTL_DRAIN _IOW('W', 0x31, int)
-#define SNDRV_TIMER_VERSION SNDRV_PROTOCOL_VERSION(2, 0, 6)
+#define SNDRV_TIMER_VERSION SNDRV_PROTOCOL_VERSION(2, 0, 7)
 enum {
   SNDRV_TIMER_CLASS_NONE = - 1,
   SNDRV_TIMER_CLASS_SLAVE = 0,
@@ -614,7 +693,7 @@
 };
 #define SNDRV_TIMER_IOCTL_PVERSION _IOR('T', 0x00, int)
 #define SNDRV_TIMER_IOCTL_NEXT_DEVICE _IOWR('T', 0x01, struct snd_timer_id)
-#define SNDRV_TIMER_IOCTL_TREAD _IOW('T', 0x02, int)
+#define SNDRV_TIMER_IOCTL_TREAD_OLD _IOW('T', 0x02, int)
 #define SNDRV_TIMER_IOCTL_GINFO _IOWR('T', 0x03, struct snd_timer_ginfo)
 #define SNDRV_TIMER_IOCTL_GPARAMS _IOW('T', 0x04, struct snd_timer_gparams)
 #define SNDRV_TIMER_IOCTL_GSTATUS _IOWR('T', 0x05, struct snd_timer_gstatus)
@@ -626,6 +705,12 @@
 #define SNDRV_TIMER_IOCTL_STOP _IO('T', 0xa1)
 #define SNDRV_TIMER_IOCTL_CONTINUE _IO('T', 0xa2)
 #define SNDRV_TIMER_IOCTL_PAUSE _IO('T', 0xa3)
+#define SNDRV_TIMER_IOCTL_TREAD64 _IOW('T', 0xa4, int)
+#if __BITS_PER_LONG == 64
+#define SNDRV_TIMER_IOCTL_TREAD SNDRV_TIMER_IOCTL_TREAD_OLD
+#else
+#define SNDRV_TIMER_IOCTL_TREAD ((sizeof(__kernel_long_t) >= sizeof(time_t)) ? SNDRV_TIMER_IOCTL_TREAD_OLD : SNDRV_TIMER_IOCTL_TREAD64)
+#endif
 struct snd_timer_read {
   unsigned int resolution;
   unsigned int ticks;
@@ -649,10 +734,12 @@
 };
 struct snd_timer_tread {
   int event;
+  __time_pad pad1;
   struct timespec tstamp;
   unsigned int val;
+  __time_pad pad2;
 };
-#define SNDRV_CTL_VERSION SNDRV_PROTOCOL_VERSION(2, 0, 7)
+#define SNDRV_CTL_VERSION SNDRV_PROTOCOL_VERSION(2, 0, 8)
 struct snd_ctl_card_info {
   int card;
   int pad;
@@ -686,7 +773,6 @@
 #define SNDRV_CTL_ELEM_ACCESS_WRITE (1 << 1)
 #define SNDRV_CTL_ELEM_ACCESS_READWRITE (SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_WRITE)
 #define SNDRV_CTL_ELEM_ACCESS_VOLATILE (1 << 2)
-#define SNDRV_CTL_ELEM_ACCESS_TIMESTAMP (1 << 3)
 #define SNDRV_CTL_ELEM_ACCESS_TLV_READ (1 << 4)
 #define SNDRV_CTL_ELEM_ACCESS_TLV_WRITE (1 << 5)
 #define SNDRV_CTL_ELEM_ACCESS_TLV_READWRITE (SNDRV_CTL_ELEM_ACCESS_TLV_READ | SNDRV_CTL_ELEM_ACCESS_TLV_WRITE)
@@ -745,11 +831,7 @@
     } enumerated;
     unsigned char reserved[128];
   } value;
-  union {
-    unsigned short d[4];
-    unsigned short * d_ptr;
-  } dimen;
-  unsigned char reserved[64 - 4 * sizeof(unsigned short)];
+  unsigned char reserved[64];
 };
 struct snd_ctl_elem_value {
   struct snd_ctl_elem_id id;
@@ -773,8 +855,7 @@
     } bytes;
     struct snd_aes_iec958 iec958;
   } value;
-  struct timespec tstamp;
-  unsigned char reserved[128 - sizeof(struct timespec)];
+  unsigned char reserved[128];
 };
 struct snd_ctl_tlv {
   unsigned int numid;
diff --git a/libc/kernel/uapi/sound/emu10k1.h b/libc/kernel/uapi/sound/emu10k1.h
index 4ad0002..483309e 100644
--- a/libc/kernel/uapi/sound/emu10k1.h
+++ b/libc/kernel/uapi/sound/emu10k1.h
@@ -18,8 +18,9 @@
  ****************************************************************************/
 #ifndef _UAPI__SOUND_EMU10K1_H
 #define _UAPI__SOUND_EMU10K1_H
+#ifdef __linux__
 #include <linux/types.h>
-#include <sound/asound.h>
+#endif
 #define EMU10K1_CARD_CREATIVE 0x00000000
 #define EMU10K1_CARD_EMUAPS 0x00000001
 #define EMU10K1_FX8010_PCM_COUNT 8
@@ -233,8 +234,20 @@
 #define EMU10K1_GPR_TRANSLATION_BASS 2
 #define EMU10K1_GPR_TRANSLATION_TREBLE 3
 #define EMU10K1_GPR_TRANSLATION_ONOFF 4
+enum emu10k1_ctl_elem_iface {
+  EMU10K1_CTL_ELEM_IFACE_MIXER = 2,
+  EMU10K1_CTL_ELEM_IFACE_PCM = 3,
+};
+struct emu10k1_ctl_elem_id {
+  unsigned int pad;
+  int iface;
+  unsigned int device;
+  unsigned int subdevice;
+  unsigned char name[44];
+  unsigned int index;
+};
 struct snd_emu10k1_fx8010_control_gpr {
-  struct snd_ctl_elem_id id;
+  struct emu10k1_ctl_elem_id id;
   unsigned int vcount;
   unsigned int count;
   unsigned short gpr[32];
@@ -245,7 +258,7 @@
   const unsigned int * tlv;
 };
 struct snd_emu10k1_fx8010_control_old_gpr {
-  struct snd_ctl_elem_id id;
+  struct emu10k1_ctl_elem_id id;
   unsigned int vcount;
   unsigned int count;
   unsigned short gpr[32];
@@ -257,19 +270,19 @@
 struct snd_emu10k1_fx8010_code {
   char name[128];
   __EMU10K1_DECLARE_BITMAP(gpr_valid, 0x200);
-  __u32 __user * gpr_map;
+  __u32 * gpr_map;
   unsigned int gpr_add_control_count;
-  struct snd_emu10k1_fx8010_control_gpr __user * gpr_add_controls;
+  struct snd_emu10k1_fx8010_control_gpr * gpr_add_controls;
   unsigned int gpr_del_control_count;
-  struct snd_ctl_elem_id __user * gpr_del_controls;
+  struct emu10k1_ctl_elem_id * gpr_del_controls;
   unsigned int gpr_list_control_count;
   unsigned int gpr_list_control_total;
-  struct snd_emu10k1_fx8010_control_gpr __user * gpr_list_controls;
+  struct snd_emu10k1_fx8010_control_gpr * gpr_list_controls;
   __EMU10K1_DECLARE_BITMAP(tram_valid, 0x100);
-  __u32 __user * tram_data_map;
-  __u32 __user * tram_addr_map;
+  __u32 * tram_data_map;
+  __u32 * tram_addr_map;
   __EMU10K1_DECLARE_BITMAP(code_valid, 1024);
-  __u32 __user * code;
+  __u32 * code;
 };
 struct snd_emu10k1_fx8010_tram {
   unsigned int address;
@@ -307,9 +320,4 @@
 #define SNDRV_EMU10K1_IOCTL_ZERO_TRAM_COUNTER _IO('H', 0x82)
 #define SNDRV_EMU10K1_IOCTL_SINGLE_STEP _IOW('H', 0x83, int)
 #define SNDRV_EMU10K1_IOCTL_DBG_READ _IOR('H', 0x84, int)
-typedef struct snd_emu10k1_fx8010_info emu10k1_fx8010_info_t;
-typedef struct snd_emu10k1_fx8010_control_gpr emu10k1_fx8010_control_gpr_t;
-typedef struct snd_emu10k1_fx8010_code emu10k1_fx8010_code_t;
-typedef struct snd_emu10k1_fx8010_tram emu10k1_fx8010_tram_t;
-typedef struct snd_emu10k1_fx8010_pcm_rec emu10k1_fx8010_pcm_t;
 #endif
diff --git a/libc/kernel/uapi/sound/hdsp.h b/libc/kernel/uapi/sound/hdsp.h
index 02e7f2d..2fec371 100644
--- a/libc/kernel/uapi/sound/hdsp.h
+++ b/libc/kernel/uapi/sound/hdsp.h
@@ -18,7 +18,9 @@
  ****************************************************************************/
 #ifndef __SOUND_HDSP_H
 #define __SOUND_HDSP_H
+#ifdef __linux__
 #include <linux/types.h>
+#endif
 #define HDSP_MATRIX_MIXER_SIZE 2048
 enum HDSP_IO_Type {
   Digiface,
@@ -64,7 +66,7 @@
 };
 #define SNDRV_HDSP_IOCTL_GET_CONFIG_INFO _IOR('H', 0x41, struct hdsp_config_info)
 struct hdsp_firmware {
-  void __user * firmware_data;
+  void * firmware_data;
 };
 #define SNDRV_HDSP_IOCTL_UPLOAD_FIRMWARE _IOW('H', 0x42, struct hdsp_firmware)
 struct hdsp_version {
@@ -81,11 +83,4 @@
   int aebo;
 };
 #define SNDRV_HDSP_IOCTL_GET_9632_AEB _IOR('H', 0x45, struct hdsp_9632_aeb)
-typedef enum HDSP_IO_Type HDSP_IO_Type;
-typedef struct hdsp_peak_rms hdsp_peak_rms_t;
-typedef struct hdsp_config_info hdsp_config_info_t;
-typedef struct hdsp_firmware hdsp_firmware_t;
-typedef struct hdsp_version hdsp_version_t;
-typedef struct hdsp_mixer hdsp_mixer_t;
-typedef struct hdsp_9632_aeb hdsp_9632_aeb_t;
 #endif
diff --git a/libc/kernel/uapi/sound/hdspm.h b/libc/kernel/uapi/sound/hdspm.h
index dc3192d..bd28e8c 100644
--- a/libc/kernel/uapi/sound/hdspm.h
+++ b/libc/kernel/uapi/sound/hdspm.h
@@ -18,7 +18,9 @@
  ****************************************************************************/
 #ifndef __SOUND_HDSPM_H
 #define __SOUND_HDSPM_H
+#ifdef __linux__
 #include <linux/types.h>
+#endif
 #define HDSPM_MAX_CHANNELS 64
 enum hdspm_io_type {
   MADI,
@@ -144,9 +146,4 @@
   struct hdspm_mixer * mixer;
 };
 #define SNDRV_HDSPM_IOCTL_GET_MIXER _IOR('H', 0x44, struct hdspm_mixer_ioctl)
-typedef struct hdspm_peak_rms hdspm_peak_rms_t;
-typedef struct hdspm_config_info hdspm_config_info_t;
-typedef struct hdspm_version hdspm_version_t;
-typedef struct hdspm_channelfader snd_hdspm_channelfader_t;
-typedef struct hdspm_mixer hdspm_mixer_t;
 #endif
diff --git a/libc/kernel/uapi/sound/sof/abi.h b/libc/kernel/uapi/sound/sof/abi.h
index f19e4e9..c385f5a 100644
--- a/libc/kernel/uapi/sound/sof/abi.h
+++ b/libc/kernel/uapi/sound/sof/abi.h
@@ -19,7 +19,7 @@
 #ifndef __INCLUDE_UAPI_SOUND_SOF_ABI_H__
 #define __INCLUDE_UAPI_SOUND_SOF_ABI_H__
 #define SOF_ABI_MAJOR 3
-#define SOF_ABI_MINOR 11
+#define SOF_ABI_MINOR 12
 #define SOF_ABI_PATCH 0
 #define SOF_ABI_MAJOR_SHIFT 24
 #define SOF_ABI_MAJOR_MASK 0xff
diff --git a/libc/kernel/uapi/sound/sof/tokens.h b/libc/kernel/uapi/sound/sof/tokens.h
index 6d8561f..7ce5ddc 100644
--- a/libc/kernel/uapi/sound/sof/tokens.h
+++ b/libc/kernel/uapi/sound/sof/tokens.h
@@ -37,6 +37,10 @@
 #define SOF_TKN_VOLUME_RAMP_STEP_MS 251
 #define SOF_TKN_SRC_RATE_IN 300
 #define SOF_TKN_SRC_RATE_OUT 301
+#define SOF_TKN_ASRC_RATE_IN 320
+#define SOF_TKN_ASRC_RATE_OUT 321
+#define SOF_TKN_ASRC_ASYNCHRONOUS_MODE 322
+#define SOF_TKN_ASRC_OPERATION_MODE 323
 #define SOF_TKN_PCM_DMAC_CONFIG 353
 #define SOF_TKN_COMP_PERIOD_SINK_COUNT 400
 #define SOF_TKN_COMP_PERIOD_SOURCE_COUNT 401
@@ -67,7 +71,7 @@
 #define SOF_TKN_TONE_SAMPLE_RATE 800
 #define SOF_TKN_PROCESS_TYPE 900
 #define SOF_TKN_EFFECT_TYPE SOF_TKN_PROCESS_TYPE
-#define SOF_TKN_IMX_SAI_FIRST_TOKEN 1000
+#define SOF_TKN_IMX_SAI_MCLK_ID 1000
 #define SOF_TKN_IMX_ESAI_MCLK_ID 1100
 #define SOF_TKN_STREAM_PLAYBACK_COMPATIBLE_D0I3 1200
 #define SOF_TKN_STREAM_CAPTURE_COMPATIBLE_D0I3 1201
diff --git a/libc/libc.map.txt b/libc/libc.map.txt
index 4bfb8a2..2284775 100644
--- a/libc/libc.map.txt
+++ b/libc/libc.map.txt
@@ -1550,6 +1550,12 @@
     _Unwind_VRS_Set; # apex llndk arm
 } LIBC_Q;
 
+LIBC_S { # introduced=31
+  global:
+    ffsl;
+    ffsll;
+} LIBC_R;
+
 LIBC_PRIVATE {
   global:
     __accept4; # arm x86
diff --git a/libc/malloc_debug/tests/malloc_debug_system_tests.cpp b/libc/malloc_debug/tests/malloc_debug_system_tests.cpp
index 9e612f0..dd569fd 100644
--- a/libc/malloc_debug/tests/malloc_debug_system_tests.cpp
+++ b/libc/malloc_debug/tests/malloc_debug_system_tests.cpp
@@ -150,7 +150,7 @@
   log_str->clear();
 
   logger_list* list;
-  list = android_logger_list_open(log, ANDROID_LOG_RDONLY | ANDROID_LOG_NONBLOCK, 1000, pid);
+  list = android_logger_list_open(log, ANDROID_LOG_NONBLOCK, 1000, pid);
   ASSERT_TRUE(list != nullptr);
 
   while (true) {
diff --git a/libc/platform/bionic/macros.h b/libc/platform/bionic/macros.h
index 28a69e6..076cff1 100644
--- a/libc/platform/bionic/macros.h
+++ b/libc/platform/bionic/macros.h
@@ -83,11 +83,15 @@
 #define __BIONIC_FALLTHROUGH
 #endif
 
-template <typename T>
-static inline T* untag_address(T* p) {
+static inline uintptr_t untag_address(uintptr_t p) {
 #if defined(__aarch64__)
-  return reinterpret_cast<T*>(reinterpret_cast<uintptr_t>(p) & ((1ULL << 56) - 1));
+  return p & ((1ULL << 56) - 1);
 #else
   return p;
 #endif
 }
+
+template <typename T>
+static inline T* untag_address(T* p) {
+  return reinterpret_cast<T*>(untag_address(reinterpret_cast<uintptr_t>(p)));
+}
diff --git a/libc/platform/bionic/mte_kernel.h b/libc/platform/bionic/mte_kernel.h
index 2c777c9..d22d65e 100644
--- a/libc/platform/bionic/mte_kernel.h
+++ b/libc/platform/bionic/mte_kernel.h
@@ -37,7 +37,7 @@
 
 #ifdef ANDROID_EXPERIMENTAL_MTE
 
-#define HWCAP2_MTE (1 << 10)
+#define HWCAP2_MTE (1 << 18)
 #define PROT_MTE 0x20
 
 #define PR_MTE_TCF_SHIFT 1
@@ -45,10 +45,12 @@
 #define PR_MTE_TCF_SYNC (1UL << PR_MTE_TCF_SHIFT)
 #define PR_MTE_TCF_ASYNC (2UL << PR_MTE_TCF_SHIFT)
 #define PR_MTE_TCF_MASK (3UL << PR_MTE_TCF_SHIFT)
-#define PR_MTE_EXCL_SHIFT 3
-#define PR_MTE_EXCL_MASK (0xffffUL << PR_MTE_EXCL_SHIFT)
+#define PR_MTE_TAG_SHIFT 3
+#define PR_MTE_TAG_MASK (0xffffUL << PR_MTE_TAG_SHIFT)
 
-#define SEGV_MTEAERR 6
-#define SEGV_MTESERR 7
+#define SEGV_MTEAERR 8
+#define SEGV_MTESERR 9
+
+#define PTRACE_PEEKTAG 33
 
 #endif
diff --git a/libc/system_properties/contexts_split.cpp b/libc/system_properties/contexts_split.cpp
index 11db7ec..96b01a4 100644
--- a/libc/system_properties/contexts_split.cpp
+++ b/libc/system_properties/contexts_split.cpp
@@ -114,8 +114,6 @@
 }
 
 // The below two functions are duplicated from label_support.c in libselinux.
-// TODO: Find a location suitable for these functions such that both libc and
-// libselinux can share a common source file.
 
 // The read_spec_entries and read_spec_entry functions may be used to
 // replace sscanf to read entries from spec files. The file and
diff --git a/libc/upstream-openbsd/android/include/arc4random.h b/libc/upstream-openbsd/android/include/arc4random.h
index 5f0b15e..96f94be 100644
--- a/libc/upstream-openbsd/android/include/arc4random.h
+++ b/libc/upstream-openbsd/android/include/arc4random.h
@@ -36,14 +36,6 @@
 //#define _ARC4_LOCK()   pthread_mutex_lock(&arc4random_mtx)
 //#define _ARC4_UNLOCK() pthread_mutex_unlock(&arc4random_mtx)
 
-#ifdef __GLIBC__
-extern void *__dso_handle;
-extern int __register_atfork(void (*)(void), void(*)(void), void (*)(void), void *);
-#define _ARC4_ATFORK(f) __register_atfork(NULL, NULL, (f), __dso_handle)
-#else
-#define _ARC4_ATFORK(f) pthread_atfork(NULL, NULL, (f))
-#endif
-
 static inline void _getentropy_fail(void) {
     async_safe_fatal("getentropy failed: %s", strerror(errno));
 }
diff --git a/linker/linker.cpp b/linker/linker.cpp
index 15b6a40..e34c796 100644
--- a/linker/linker.cpp
+++ b/linker/linker.cpp
@@ -537,10 +537,10 @@
 
   static deleter_t deleter;
 
-  static LoadTask* create(const char* name,
-                          soinfo* needed_by,
-                          android_namespace_t* start_from,
-                          std::unordered_map<const soinfo*, ElfReader>* readers_map) {
+  // needed_by is NULL iff dlopen is called from memory that isn't part of any known soinfo.
+  static LoadTask* create(const char* _Nonnull name, soinfo* _Nullable needed_by,
+                          android_namespace_t* _Nonnull start_from,
+                          std::unordered_map<const soinfo*, ElfReader>* _Nonnull readers_map) {
     LoadTask* ptr = TypeBasedAllocator<LoadTask>::alloc();
     return new (ptr) LoadTask(name, needed_by, start_from, readers_map);
   }
@@ -602,6 +602,11 @@
     return start_from_;
   }
 
+  void remove_cached_elf_reader() {
+    CHECK(si_ != nullptr);
+    (*elf_readers_map_).erase(si_);
+  }
+
   const ElfReader& get_elf_reader() const {
     CHECK(si_ != nullptr);
     return (*elf_readers_map_)[si_];
@@ -1040,47 +1045,24 @@
 
   // If the name contains a slash, we should attempt to open it directly and not search the paths.
   if (strchr(name, '/') != nullptr) {
-    int fd = -1;
-
-    if (strstr(name, kZipFileSeparator) != nullptr) {
-      fd = open_library_in_zipfile(zip_archive_cache, name, file_offset, realpath);
-    }
-
-    if (fd == -1) {
-      fd = TEMP_FAILURE_RETRY(open(name, O_RDONLY | O_CLOEXEC));
-      if (fd != -1) {
-        *file_offset = 0;
-        if (!realpath_fd(fd, realpath)) {
-          if (!is_first_stage_init()) {
-            PRINT("warning: unable to get realpath for the library \"%s\". Will use given path.",
-                  name);
-          }
-          *realpath = name;
-        }
-      }
-    }
-
-    return fd;
+    return open_library_at_path(zip_archive_cache, name, file_offset, realpath);
   }
 
-  // Otherwise we try LD_LIBRARY_PATH first, and fall back to the default library path
+  // LD_LIBRARY_PATH has the highest priority. We don't have to check accessibility when searching
+  // the namespace's path lists, because anything found on a namespace path list should always be
+  // accessible.
   int fd = open_library_on_paths(zip_archive_cache, name, file_offset, ns->get_ld_library_paths(), realpath);
+
+  // Try the DT_RUNPATH, and verify that the library is accessible.
   if (fd == -1 && needed_by != nullptr) {
     fd = open_library_on_paths(zip_archive_cache, name, file_offset, needed_by->get_dt_runpath(), realpath);
-    // Check if the library is accessible
     if (fd != -1 && !ns->is_accessible(*realpath)) {
       close(fd);
       fd = -1;
     }
   }
 
-#if !defined(__ANDROID_APEX__)
-  if (fd == -1) {
-    std::vector<std::string> bootstrap_paths = { std::string(kSystemLibDir) + "/bootstrap" };
-    fd = open_library_on_paths(zip_archive_cache, name, file_offset, bootstrap_paths, realpath);
-  }
-#endif
-
+  // Finally search the namespace's main search path list.
   if (fd == -1) {
     fd = open_library_on_paths(zip_archive_cache, name, file_offset, ns->get_default_library_paths(), realpath);
   }
@@ -1282,16 +1264,14 @@
   }
 
   soinfo* si = soinfo_alloc(ns, realpath.c_str(), &file_stat, file_offset, rtld_flags);
-  if (si == nullptr) {
-    return false;
-  }
 
   task->set_soinfo(si);
 
   // Read the ELF header and some of the segments.
   if (!task->read(realpath.c_str(), file_stat.st_size)) {
-    soinfo_free(si);
+    task->remove_cached_elf_reader();
     task->set_soinfo(nullptr);
+    soinfo_free(si);
     return false;
   }
 
@@ -1337,14 +1317,13 @@
   soinfo* needed_by = task->get_needed_by();
   const android_dlextinfo* extinfo = task->get_extinfo();
 
-  off64_t file_offset;
-  std::string realpath;
   if (extinfo != nullptr && (extinfo->flags & ANDROID_DLEXT_USE_LIBRARY_FD) != 0) {
-    file_offset = 0;
+    off64_t file_offset = 0;
     if ((extinfo->flags & ANDROID_DLEXT_USE_LIBRARY_FD_OFFSET) != 0) {
       file_offset = extinfo->library_fd_offset;
     }
 
+    std::string realpath;
     if (!realpath_fd(extinfo->library_fd, &realpath)) {
       if (!is_first_stage_init()) {
         PRINT(
@@ -1362,10 +1341,12 @@
 
   LD_LOG(kLogDlopen,
          "load_library(ns=%s, task=%s, flags=0x%x, search_linked_namespaces=%d): calling "
-         "open_library with realpath=%s",
-         ns->get_name(), name, rtld_flags, search_linked_namespaces, realpath.c_str());
+         "open_library",
+         ns->get_name(), name, rtld_flags, search_linked_namespaces);
 
   // Open the file.
+  off64_t file_offset;
+  std::string realpath;
   int fd = open_library(ns, zip_archive_cache, name, needed_by, &file_offset, &realpath);
   if (fd == -1) {
     if (task->is_dt_needed()) {
@@ -1476,11 +1457,11 @@
                                   LoadTask* task,
                                   ZipArchiveCache* zip_archive_cache,
                                   LoadTaskList* load_tasks,
-                                  int rtld_flags,
-                                  bool search_linked_namespaces) {
+                                  int rtld_flags) {
   soinfo* candidate;
 
-  if (find_loaded_library_by_soname(ns, task->get_name(), search_linked_namespaces, &candidate)) {
+  if (find_loaded_library_by_soname(ns, task->get_name(), true /* search_linked_namespaces */,
+                                    &candidate)) {
     LD_LOG(kLogDlopen,
            "find_library_internal(ns=%s, task=%s): Already loaded (by soname): %s",
            ns->get_name(), task->get_name(), candidate->get_realpath());
@@ -1493,7 +1474,8 @@
   TRACE("[ \"%s\" find_loaded_library_by_soname failed (*candidate=%s@%p). Trying harder... ]",
         task->get_name(), candidate == nullptr ? "n/a" : candidate->get_realpath(), candidate);
 
-  if (load_library(ns, task, zip_archive_cache, load_tasks, rtld_flags, search_linked_namespaces)) {
+  if (load_library(ns, task, zip_archive_cache, load_tasks, rtld_flags,
+                   true /* search_linked_namespaces */)) {
     return true;
   }
 
@@ -1508,39 +1490,33 @@
            ns->get_name(), task->get_name(), g_default_namespace.get_name());
     ns = &g_default_namespace;
     if (load_library(ns, task, zip_archive_cache, load_tasks, rtld_flags,
-                     search_linked_namespaces)) {
+                     true /* search_linked_namespaces */)) {
       return true;
     }
   }
   // END OF WORKAROUND
 
-  if (search_linked_namespaces) {
-    // if a library was not found - look into linked namespaces
-    // preserve current dlerror in the case it fails.
-    DlErrorRestorer dlerror_restorer;
-    LD_LOG(kLogDlopen, "find_library_internal(ns=%s, task=%s): Trying %zu linked namespaces",
-           ns->get_name(), task->get_name(), ns->linked_namespaces().size());
-    for (auto& linked_namespace : ns->linked_namespaces()) {
-      if (find_library_in_linked_namespace(linked_namespace, task)) {
-        if (task->get_soinfo() == nullptr) {
-          // try to load the library - once namespace boundary is crossed
-          // we need to load a library within separate load_group
-          // to avoid using symbols from foreign namespace while.
-          //
-          // However, actual linking is deferred until when the global group
-          // is fully identified and is applied to all namespaces.
-          // Otherwise, the libs in the linked namespace won't get symbols from
-          // the global group.
-          if (load_library(linked_namespace.linked_namespace(), task, zip_archive_cache, load_tasks, rtld_flags, false)) {
-            LD_LOG(
-                kLogDlopen, "find_library_internal(ns=%s, task=%s): Found in linked namespace %s",
-                ns->get_name(), task->get_name(), linked_namespace.linked_namespace()->get_name());
-            return true;
-          }
-        } else {
-          // lib is already loaded
-          return true;
-        }
+  // if a library was not found - look into linked namespaces
+  // preserve current dlerror in the case it fails.
+  DlErrorRestorer dlerror_restorer;
+  LD_LOG(kLogDlopen, "find_library_internal(ns=%s, task=%s): Trying %zu linked namespaces",
+         ns->get_name(), task->get_name(), ns->linked_namespaces().size());
+  for (auto& linked_namespace : ns->linked_namespaces()) {
+    if (find_library_in_linked_namespace(linked_namespace, task)) {
+      // Library is already loaded.
+      if (task->get_soinfo() != nullptr) {
+        // n.b. This code path runs when find_library_in_linked_namespace found an already-loaded
+        // library by soname. That should only be possible with a greylist lookup, where we switch
+        // the namespace, because otherwise, find_library_in_linked_namespace is duplicating the
+        // soname scan done in this function's first call to find_loaded_library_by_soname.
+        return true;
+      }
+
+      if (load_library(linked_namespace.linked_namespace(), task, zip_archive_cache, load_tasks,
+                       rtld_flags, false /* search_linked_namespaces */)) {
+        LD_LOG(kLogDlopen, "find_library_internal(ns=%s, task=%s): Found in linked namespace %s",
+               ns->get_name(), task->get_name(), linked_namespace.linked_namespace()->get_name());
+        return true;
       }
     }
   }
@@ -1577,7 +1553,6 @@
                     int rtld_flags,
                     const android_dlextinfo* extinfo,
                     bool add_as_children,
-                    bool search_linked_namespaces,
                     std::vector<android_namespace_t*>* namespaces) {
   // Step 0: prepare.
   std::unordered_map<const soinfo*, ElfReader> readers_map;
@@ -1633,8 +1608,7 @@
                                task,
                                &zip_archive_cache,
                                &load_tasks,
-                               rtld_flags,
-                               search_linked_namespaces || is_dt_needed)) {
+                               rtld_flags)) {
       return false;
     }
 
@@ -1876,8 +1850,7 @@
                              0,
                              rtld_flags,
                              extinfo,
-                             false /* add_as_children */,
-                             true /* search_linked_namespaces */)) {
+                             false /* add_as_children */)) {
     if (si != nullptr) {
       soinfo_unload(si);
     }
@@ -2443,6 +2416,21 @@
   }
 }
 
+std::vector<std::string> fix_lib_paths(std::vector<std::string> paths) {
+  // For the bootstrap linker, insert /system/${LIB}/bootstrap in front of /system/${LIB} in any
+  // namespace search path. The bootstrap linker should prefer to use the bootstrap bionic libraries
+  // (e.g. libc.so).
+#if !defined(__ANDROID_APEX__)
+  for (size_t i = 0; i < paths.size(); ++i) {
+    if (paths[i] == kSystemLibDir) {
+      paths.insert(paths.begin() + i, std::string(kSystemLibDir) + "/bootstrap");
+      ++i;
+    }
+  }
+#endif
+  return paths;
+}
+
 android_namespace_t* create_namespace(const void* caller_addr,
                                       const char* name,
                                       const char* ld_library_path,
@@ -3298,9 +3286,8 @@
     // Fail if app is targeting M or above.
     int app_target_api_level = get_application_target_sdk_version();
     if (app_target_api_level >= 23) {
-      DL_ERR_AND_LOG("\"%s\" has text relocations (https://android.googlesource.com/platform/"
-                     "bionic/+/master/android-changes-for-ndk-developers.md#Text-Relocations-"
-                     "Enforced-for-API-level-23)", get_realpath());
+      DL_ERR_AND_LOG("\"%s\" has text relocations (%s#Text-Relocations-Enforced-for-API-level-23)",
+                     get_realpath(), kBionicChangesUrl);
       return false;
     }
     // Make segments writable to allow text relocations to work properly. We will later call
@@ -3450,12 +3437,15 @@
 
   if (file_exists(kLdGeneratedConfigFilePath)) {
     return kLdGeneratedConfigFilePath;
-  } else {
-    // TODO(b/146386369) : Adjust log level and add more condition to log only when necessary
-    INFO("Warning: failed to find generated linker configuration from \"%s\"",
-         kLdGeneratedConfigFilePath);
   }
 
+  // Do not raise message from a host environment which is expected to miss generated linker
+  // configuration.
+#if defined(__ANDROID__)
+  DL_WARN("Warning: failed to find generated linker configuration from \"%s\"",
+          kLdGeneratedConfigFilePath);
+#endif
+
   path = get_ld_config_file_vndk_path();
   if (file_exists(path.c_str())) {
     return path;
diff --git a/linker/linker.h b/linker/linker.h
index 2da1404..9b6af3b 100644
--- a/linker/linker.h
+++ b/linker/linker.h
@@ -71,6 +71,10 @@
   DISALLOW_COPY_AND_ASSIGN(VersionTracker);
 };
 
+static constexpr const char* kBionicChangesUrl =
+    "https://android.googlesource.com/platform/bionic/+/master/"
+    "android-changes-for-ndk-developers.md";
+
 soinfo* get_libdl_info(const soinfo& linker_si);
 
 soinfo* find_containing_library(const void* p);
diff --git a/linker/linker_debuggerd_android.cpp b/linker/linker_debuggerd_android.cpp
index 42ea2b7..6a81673 100644
--- a/linker/linker_debuggerd_android.cpp
+++ b/linker/linker_debuggerd_android.cpp
@@ -33,18 +33,25 @@
 
 #include "linker_gdb_support.h"
 
+#if defined(__ANDROID_APEX__)
+static debugger_process_info get_process_info() {
+  return {
+      .abort_msg = __libc_shared_globals()->abort_msg,
+      .fdsan_table = &__libc_shared_globals()->fd_table,
+      .gwp_asan_state = __libc_shared_globals()->gwp_asan_state,
+      .gwp_asan_metadata = __libc_shared_globals()->gwp_asan_metadata,
+  };
+}
+#endif
+
 void linker_debuggerd_init() {
+  // There may be a version mismatch between the bootstrap linker and the crash_dump in the APEX,
+  // so don't pass in any process info from the bootstrap linker.
   debuggerd_callbacks_t callbacks = {
-    .get_abort_message = []() {
-      return __libc_shared_globals()->abort_msg;
-    },
-    .post_dump = &notify_gdb_of_libraries,
-    .get_gwp_asan_state = []() {
-      return __libc_shared_globals()->gwp_asan_state;
-    },
-    .get_gwp_asan_metadata = []() {
-      return __libc_shared_globals()->gwp_asan_metadata;
-    },
+#if defined(__ANDROID_APEX__)
+      .get_process_info = get_process_info,
+#endif
+      .post_dump = notify_gdb_of_libraries,
   };
   debuggerd_init(&callbacks);
 }
diff --git a/linker/linker_globals.cpp b/linker/linker_globals.cpp
index bcc2a1e..31da02c 100644
--- a/linker/linker_globals.cpp
+++ b/linker/linker_globals.cpp
@@ -50,7 +50,7 @@
   return sizeof(__linker_dl_err_buf);
 }
 
-void DL_WARN_documented_change(int api_level, const char* doc_link, const char* fmt, ...) {
+void DL_WARN_documented_change(int api_level, const char* doc_fragment, const char* fmt, ...) {
   std::string result{"Warning: "};
 
   va_list ap;
@@ -60,8 +60,9 @@
 
   android::base::StringAppendF(&result,
                                " and will not work when the app moves to API level %d or later "
-                               "(https://android.googlesource.com/platform/bionic/+/master/%s) "
-                               "(allowing for now because this app's target API level is still %d)",
-                               api_level, doc_link, get_application_target_sdk_version());
+                               "(%s#%s) (allowing for now because this app's target API level is "
+                               "still %d)",
+                               api_level, kBionicChangesUrl, doc_fragment,
+                               get_application_target_sdk_version());
   DL_WARN("%s", result.c_str());
 }
diff --git a/linker/linker_main.cpp b/linker/linker_main.cpp
index 98af54a..41bb4ba 100644
--- a/linker/linker_main.cpp
+++ b/linker/linker_main.cpp
@@ -460,7 +460,6 @@
                       RTLD_GLOBAL,
                       nullptr,
                       true /* add_as_children */,
-                      true /* search_linked_namespaces */,
                       &namespaces)) {
     __linker_cannot_link(g_argv[0]);
   } else if (needed_libraries_count == 0) {
diff --git a/linker/linker_main.h b/linker/linker_main.h
index 47d4bdb..724f43c 100644
--- a/linker/linker_main.h
+++ b/linker/linker_main.h
@@ -63,7 +63,6 @@
                     int rtld_flags,
                     const android_dlextinfo* extinfo,
                     bool add_as_children,
-                    bool search_linked_namespaces,
                     std::vector<android_namespace_t*>* namespaces = nullptr);
 
 void solist_add_soinfo(soinfo* si);
diff --git a/linker/linker_namespaces.h b/linker/linker_namespaces.h
index 9561bb4..6843ebc 100644
--- a/linker/linker_namespaces.h
+++ b/linker/linker_namespaces.h
@@ -34,6 +34,8 @@
 #include <vector>
 #include <unordered_set>
 
+std::vector<std::string> fix_lib_paths(std::vector<std::string> paths);
+
 struct android_namespace_t;
 
 struct android_namespace_link_t {
@@ -100,10 +102,10 @@
     return default_library_paths_;
   }
   void set_default_library_paths(std::vector<std::string>&& library_paths) {
-    default_library_paths_ = std::move(library_paths);
+    default_library_paths_ = fix_lib_paths(std::move(library_paths));
   }
   void set_default_library_paths(const std::vector<std::string>& library_paths) {
-    default_library_paths_ = library_paths;
+    default_library_paths_ = fix_lib_paths(library_paths);
   }
 
   const std::vector<std::string>& get_permitted_paths() const {
diff --git a/tests/Android.bp b/tests/Android.bp
index 8b1eebc..c751084 100644
--- a/tests/Android.bp
+++ b/tests/Android.bp
@@ -39,16 +39,24 @@
         "-D__STDC_LIMIT_MACROS",
     ],
     header_libs: ["bionic_libc_platform_headers"],
-    // Make the bionic tests implicitly test bionic's shadow call stack support.
+    // Ensure that the tests exercise shadow call stack support and
+    // the hint space PAC/BTI instructions.
     arch: {
         arm64: {
-           cflags: ["-fsanitize=shadow-call-stack"],
+            cflags: [
+                "-fsanitize=shadow-call-stack",
+                // Disable this option for now: see b/151372823
+                //"-mbranch-protection=standard",
+            ],
         },
     },
     stl: "libc++",
     sanitize: {
         address: false,
     },
+
+    // Use the bootstrap version of bionic because some tests call private APIs
+    // that aren't exposed by the APEX bionic stubs.
     bootstrap: true,
 
     product_variables: {
@@ -167,6 +175,7 @@
         "strings_nofortify_test.cpp",
         "strings_test.cpp",
         "sstream_test.cpp",
+        "sys_auxv_test.cpp",
         "sys_epoll_test.cpp",
         "sys_mman_test.cpp",
         "sys_msg_test.cpp",
@@ -773,17 +782,6 @@
 }
 
 cc_test {
-    name: "bionic-unit-tests-scudo",
-    defaults: [
-        "bionic_unit_tests_defaults",
-    ],
-
-    shared_libs: [
-        "libc_scudo",
-    ],
-}
-
-cc_test {
     name: "bionic-stress-tests",
     defaults: [
         "bionic_tests_defaults",
diff --git a/tests/android_unsafe_frame_pointer_chase_test.cpp b/tests/android_unsafe_frame_pointer_chase_test.cpp
index dd04c33..7fa50e1 100644
--- a/tests/android_unsafe_frame_pointer_chase_test.cpp
+++ b/tests/android_unsafe_frame_pointer_chase_test.cpp
@@ -18,6 +18,8 @@
 
 #if defined(__BIONIC__)
 
+#include <sys/mman.h>
+
 #include "platform/bionic/android_unsafe_frame_pointer_chase.h"
 
 // Prevent tail calls inside recurse.
@@ -72,21 +74,25 @@
   EXPECT_TRUE(CheckFrames(frames, size));
 }
 
-static void *BacktraceThread(void *) {
+static const char* tester_func() {
   size_t size = recurse(kNumFrames, 0, 0);
 
   uintptr_t frames[kNumFrames + 2];
   size_t size2 = recurse(kNumFrames, frames, kNumFrames + 2);
   if (size2 != size) {
-    return (void*)"size2 != size";
+    return "size2 != size";
   }
 
   if (!CheckFrames(frames, size)) {
-    return (void*)"CheckFrames failed";
+    return "CheckFrames failed";
   }
   return nullptr;
 }
 
+static void* BacktraceThread(void*) {
+  return (void*)tester_func();
+}
+
 TEST(android_unsafe_frame_pointer_chase, pthread) {
   pthread_t t;
   ASSERT_EQ(0, pthread_create(&t, nullptr, BacktraceThread, nullptr));
@@ -95,4 +101,58 @@
   EXPECT_EQ(nullptr, reinterpret_cast<char*>(retval));
 }
 
+static bool g_handler_called;
+static const char* g_handler_tester_result;
+
+static void BacktraceHandler(int) {
+  g_handler_called = true;
+  g_handler_tester_result = tester_func();
+}
+
+static constexpr size_t kStackSize = 16384;
+
+static void* SignalBacktraceThread(void* sp) {
+  stack_t ss;
+  ss.ss_sp = sp;
+  ss.ss_flags = 0;
+  ss.ss_size = kStackSize;
+  sigaltstack(&ss, nullptr);
+
+  struct sigaction s = {};
+  s.sa_handler = BacktraceHandler;
+  s.sa_flags = SA_ONSTACK;
+  sigaction(SIGRTMIN, &s, nullptr);
+
+  raise(SIGRTMIN);
+  return nullptr;
+}
+
+TEST(android_unsafe_frame_pointer_chase, sigaltstack) {
+  // Create threads where the alternate stack appears both after and before the regular stack, and
+  // call android_unsafe_frame_pointer_chase from a signal handler. Without handling for the
+  // alternate signal stack, this would cause false negatives or potential false positives in the
+  // android_unsafe_frame_pointer_chase function.
+  void* stacks =
+      mmap(nullptr, kStackSize * 2, PROT_READ | PROT_WRITE, MAP_ANON | MAP_PRIVATE, -1, 0);
+
+  for (unsigned i = 0; i != 2; ++i) {
+    pthread_t t;
+    pthread_attr_t attr;
+    ASSERT_EQ(0, pthread_attr_init(&attr));
+    ASSERT_EQ(0, pthread_attr_setstack(&attr, reinterpret_cast<char*>(stacks) + kStackSize * i,
+                                       kStackSize));
+
+    ASSERT_EQ(0, pthread_create(&t, &attr, SignalBacktraceThread,
+                                reinterpret_cast<char*>(stacks) + kStackSize * (1 - i)));
+    void* retval;
+    ASSERT_EQ(0, pthread_join(t, &retval));
+
+    EXPECT_TRUE(g_handler_called);
+    EXPECT_EQ(nullptr, g_handler_tester_result);
+    g_handler_called = false;
+  }
+
+  munmap(stacks, kStackSize * 2);
+}
+
 #endif // __BIONIC__
diff --git a/tests/cfi_test.cpp b/tests/cfi_test.cpp
index e155e1a..792f917 100644
--- a/tests/cfi_test.cpp
+++ b/tests/cfi_test.cpp
@@ -18,6 +18,8 @@
 #include <gtest/gtest.h>
 #include <sys/stat.h>
 
+#include <vector>
+
 #include "BionicDeathTest.h"
 #include "gtest_globals.h"
 #include "utils.h"
@@ -35,6 +37,14 @@
 
 static void f() {}
 
+static void test_cfi_slowpath_with_alloc() {
+  std::vector<void*> allocs;
+  for (size_t i = 0; i < 1000; i++) {
+    allocs.push_back(malloc(4096));
+    __cfi_slowpath(46, allocs.back());
+  }
+}
+
 TEST(cfi_test, basic) {
 #if defined(__BIONIC__)
   void* handle;
@@ -88,10 +98,11 @@
   // CFI check for a stack address. This is always invalid and gets the process killed.
   EXPECT_DEATH(__cfi_slowpath(45, reinterpret_cast<void*>(&c)), "");
 
-  // CFI check for a heap address. This is always invalid and gets the process killed.
-  void* p = malloc(4096);
-  EXPECT_DEATH(__cfi_slowpath(46, p), "");
-  free(p);
+  // CFI check for a heap address.
+  // It's possible that this allocation could wind up in the same CFI granule as
+  // an unchecked library, which means the below might not crash. To force a
+  // crash keep allocating up to a max until there is a crash.
+  EXPECT_DEATH(test_cfi_slowpath_with_alloc(), "");
 
   // Check all the addresses.
   const size_t bss_size = 1024 * 1024;
diff --git a/tests/grp_pwd_test.cpp b/tests/grp_pwd_test.cpp
index 9c6b0c5..9b23921 100644
--- a/tests/grp_pwd_test.cpp
+++ b/tests/grp_pwd_test.cpp
@@ -405,8 +405,8 @@
   }
   expect_range(AID_ISOLATED_START, AID_ISOLATED_END);
 
-  // TODO(73062966): We still don't have a good way to create vendor AIDs in the system or other
-  // non-vendor partitions, therefore we keep this check disabled.
+  // Prior to R, we didn't have a mechanism to create vendor AIDs in the system or other non-vendor
+  // partitions, therefore we disabled the rest of these checks for older API levels.
   if (android::base::GetIntProperty("ro.product.first_api_level", 0) <= 29) {
     return;
   }
@@ -462,14 +462,7 @@
       EXPECT_STREQ("/data", pwd->pw_dir) << "pwd->pw_uid: " << pwd->pw_uid;
     }
 
-    // TODO(b/27999086): fix this check with the OEM range
-    // If OEMs add their own AIDs to private/android_filesystem_config.h, this check will fail.
-    // Long term we want to create a better solution for OEMs adding AIDs, but we're not there
-    // yet, so therefore we do not check for uid's in the OEM range.
-    if (!(pwd->pw_uid >= 2900 && pwd->pw_uid <= 2999) &&
-        !(pwd->pw_uid >= 5000 && pwd->pw_uid <= 5999)) {
-      EXPECT_EQ(0U, uids.count(pwd->pw_uid)) << "pwd->pw_uid: " << pwd->pw_uid;
-    }
+    EXPECT_EQ(0U, uids.count(pwd->pw_uid)) << "pwd->pw_uid: " << pwd->pw_uid;
     uids.emplace(pwd->pw_uid);
   }
   endpwent();
@@ -812,14 +805,7 @@
     EXPECT_STREQ(grp->gr_name, grp->gr_mem[0]) << "grp->gr_gid: " << grp->gr_gid;
     EXPECT_TRUE(grp->gr_mem[1] == nullptr) << "grp->gr_gid: " << grp->gr_gid;
 
-    // TODO(b/27999086): fix this check with the OEM range
-    // If OEMs add their own AIDs to private/android_filesystem_config.h, this check will fail.
-    // Long term we want to create a better solution for OEMs adding AIDs, but we're not there
-    // yet, so therefore we do not check for gid's in the OEM range.
-    if (!(grp->gr_gid >= 2900 && grp->gr_gid <= 2999) &&
-        !(grp->gr_gid >= 5000 && grp->gr_gid <= 5999)) {
-      EXPECT_EQ(0U, gids.count(grp->gr_gid)) << "grp->gr_gid: " << grp->gr_gid;
-    }
+    EXPECT_EQ(0U, gids.count(grp->gr_gid)) << "grp->gr_gid: " << grp->gr_gid;
     gids.emplace(grp->gr_gid);
   }
   endgrent();
diff --git a/tests/headers/posix/strings_h.c b/tests/headers/posix/strings_h.c
index 0a2fa84..2051c8b 100644
--- a/tests/headers/posix/strings_h.c
+++ b/tests/headers/posix/strings_h.c
@@ -32,6 +32,10 @@
 
 static void strings_h() {
   FUNCTION(ffs, int (*f)(int));
+#if !defined(__GLIBC__)
+  FUNCTION(ffsl, int (*f)(long));
+  FUNCTION(ffsll, int (*f)(long long));
+#endif
   FUNCTION(strcasecmp, int (*f)(const char*, const char*));
   FUNCTION(strcasecmp_l, int (*f)(const char*, const char*, locale_t));
   FUNCTION(strncasecmp, int (*f)(const char*, const char*, size_t));
diff --git a/tests/ifunc_test.cpp b/tests/ifunc_test.cpp
index e69271f..e3c437e 100644
--- a/tests/ifunc_test.cpp
+++ b/tests/ifunc_test.cpp
@@ -44,7 +44,8 @@
 static uint64_t g_hwcap;
 static __ifunc_arg_t g_arg;
 
-extern "C" fn_ptr_t hwcap_resolver(uint64_t hwcap, __ifunc_arg_t* arg) {
+extern "C" fn_ptr_t hwcap_resolver(uint64_t hwcap, __ifunc_arg_t* arg)
+    __attribute__((no_sanitize("hwaddress"))) {
   g_hwcap = hwcap;
   g_arg = *arg;
   return ret42;
diff --git a/tests/libs/segment_gap_outer.cpp b/tests/libs/segment_gap_outer.cpp
index fb448e7..18aa3ee 100644
--- a/tests/libs/segment_gap_outer.cpp
+++ b/tests/libs/segment_gap_outer.cpp
@@ -1,6 +1,5 @@
 #include <android/dlext.h>
 #include <dlfcn.h>
-#include <jni.h>
 #include <stdlib.h>
 
 extern "C" void text_before_start_of_gap() {}
diff --git a/tests/malloc_test.cpp b/tests/malloc_test.cpp
index 5944414..a2f310e 100644
--- a/tests/malloc_test.cpp
+++ b/tests/malloc_test.cpp
@@ -1225,7 +1225,6 @@
 #if defined(__BIONIC__) && defined(__aarch64__) && defined(ANDROID_EXPERIMENTAL_MTE)
   if (!(getauxval(AT_HWCAP2) & HWCAP2_MTE)) {
     GTEST_SKIP() << "requires MTE support";
-    return;
   }
 
   std::unique_ptr<int[]> p = std::make_unique<int[]>(4);
diff --git a/tests/signal_test.cpp b/tests/signal_test.cpp
index 3c66034..f465458 100644
--- a/tests/signal_test.cpp
+++ b/tests/signal_test.cpp
@@ -154,44 +154,6 @@
   raise(SIGALRM);
 }
 
-TEST(signal, sigwait_SIGALRM) {
-  ScopedSignalHandler ssh(SIGALRM, [](int sig) { ASSERT_EQ(SIGALRM, sig); });
-
-  sigset_t wait_set;
-  sigemptyset(&wait_set);
-  sigaddset(&wait_set, SIGALRM);
-
-  alarm(1);
-
-  int received_signal;
-  errno = 0;
-  ASSERT_EQ(0, sigwait(&wait_set, &received_signal));
-  ASSERT_EQ(0, errno);
-  ASSERT_EQ(SIGALRM, received_signal);
-}
-
-TEST(signal, sigwait64_SIGRTMIN) {
-  ScopedSignalHandler ssh(SIGRTMIN, [](int sig) { ASSERT_EQ(SIGRTMIN, sig); });
-
-  sigset64_t wait_set;
-  sigemptyset64(&wait_set);
-  sigaddset64(&wait_set, SIGRTMIN);
-
-  pid_t tid = gettid();
-  std::thread thread([&tid]() {
-    sleep(1);
-    tgkill(getpid(), tid, SIGRTMIN);
-  });
-
-  int received_signal;
-  errno = 0;
-  ASSERT_EQ(0, sigwait64(&wait_set, &received_signal));
-  ASSERT_EQ(0, errno);
-  ASSERT_EQ(SIGRTMIN, received_signal);
-
-  thread.join();
-}
-
 static int g_sigsuspend_signal_handler_call_count = 0;
 
 TEST(signal, sigsuspend_sigpending) {
@@ -620,8 +582,7 @@
 
 TEST(signal, sigqueue) {
   ScopedSignalHandler ssh(SIGALRM, SigqueueSignalHandler, SA_SIGINFO);
-  sigval_t sigval;
-  sigval.sival_int = 1;
+  sigval_t sigval = {.sival_int = 1};
   errno = 0;
   ASSERT_EQ(0, sigqueue(getpid(), SIGALRM, sigval));
   ASSERT_EQ(0, errno);
@@ -630,8 +591,7 @@
 
 TEST(signal, pthread_sigqueue_self) {
   ScopedSignalHandler ssh(SIGALRM, SigqueueSignalHandler, SA_SIGINFO);
-  sigval_t sigval;
-  sigval.sival_int = 1;
+  sigval_t sigval = {.sival_int = 1};
   errno = 0;
   ASSERT_EQ(0, pthread_sigqueue(pthread_self(), SIGALRM, sigval));
   ASSERT_EQ(0, errno);
@@ -640,8 +600,7 @@
 
 TEST(signal, pthread_sigqueue_other) {
   ScopedSignalHandler ssh(SIGALRM, SigqueueSignalHandler, SA_SIGINFO);
-  sigval_t sigval;
-  sigval.sival_int = 1;
+  sigval_t sigval = {.sival_int = 1};
 
   sigset_t mask;
   sigfillset(&mask);
@@ -664,6 +623,44 @@
   ASSERT_EQ(1, g_sigqueue_signal_handler_call_count);
 }
 
+TEST(signal, sigwait_SIGALRM) {
+  SignalMaskRestorer smr;
+
+  // Block SIGALRM.
+  sigset_t just_SIGALRM;
+  sigemptyset(&just_SIGALRM);
+  sigaddset(&just_SIGALRM, SIGALRM);
+  ASSERT_EQ(0, sigprocmask(SIG_BLOCK, &just_SIGALRM, nullptr));
+
+  // Raise SIGALRM.
+  sigval_t sigval = {.sival_int = 1};
+  ASSERT_EQ(0, sigqueue(getpid(), SIGALRM, sigval));
+
+  // Get pending SIGALRM.
+  int sig;
+  ASSERT_EQ(0, sigwait(&just_SIGALRM, &sig));
+  ASSERT_EQ(SIGALRM, sig);
+}
+
+TEST(signal, sigwait64_SIGRTMIN) {
+  SignalMaskRestorer smr;
+
+  // Block SIGRTMIN.
+  sigset64_t just_SIGRTMIN;
+  sigemptyset64(&just_SIGRTMIN);
+  sigaddset64(&just_SIGRTMIN, SIGRTMIN);
+  ASSERT_EQ(0, sigprocmask64(SIG_BLOCK, &just_SIGRTMIN, nullptr));
+
+  // Raise SIGRTMIN.
+  sigval_t sigval = {.sival_int = 1};
+  ASSERT_EQ(0, sigqueue(getpid(), SIGRTMIN, sigval));
+
+  // Get pending SIGRTMIN.
+  int sig;
+  ASSERT_EQ(0, sigwait64(&just_SIGRTMIN, &sig));
+  ASSERT_EQ(SIGRTMIN, sig);
+}
+
 TEST(signal, sigwaitinfo) {
   SignalMaskRestorer smr;
 
@@ -674,8 +671,7 @@
   ASSERT_EQ(0, sigprocmask(SIG_BLOCK, &just_SIGALRM, nullptr));
 
   // Raise SIGALRM.
-  sigval_t sigval;
-  sigval.sival_int = 1;
+  sigval_t sigval = {.sival_int = 1};
   ASSERT_EQ(0, sigqueue(getpid(), SIGALRM, sigval));
 
   // Get pending SIGALRM.
@@ -697,8 +693,7 @@
   ASSERT_EQ(0, sigprocmask64(SIG_BLOCK, &just_SIGRTMIN, nullptr));
 
   // Raise SIGRTMIN.
-  sigval_t sigval;
-  sigval.sival_int = 1;
+  sigval_t sigval = {.sival_int = 1};
   ASSERT_EQ(0, sigqueue(getpid(), SIGRTMIN, sigval));
 
   // Get pending SIGRTMIN.
diff --git a/tests/stack_unwinding_test.cpp b/tests/stack_unwinding_test.cpp
index e620ecd..0ff6f30 100644
--- a/tests/stack_unwinding_test.cpp
+++ b/tests/stack_unwinding_test.cpp
@@ -112,10 +112,6 @@
 }
 
 TEST(stack_unwinding, unwind_through_signal_frame) {
-#if defined(__i386__)
-  GTEST_SKIP() << "Temporarily skip test since it fails on x86 see b/132763120.";
-#endif
-
   ScopedSignalHandler ssh(SIGUSR1, UnwindSignalHandler);
 
   UnwindTest();
@@ -123,10 +119,6 @@
 
 // On LP32, the SA_SIGINFO flag gets you __restore_rt instead of __restore.
 TEST(stack_unwinding, unwind_through_signal_frame_SA_SIGINFO) {
-#if defined(__i386__)
-  GTEST_SKIP() << "Temporarily skip test since it fails on x86 see b/132763120.";
-#endif
-
   ScopedSignalHandler ssh(SIGUSR1, UnwindSignalHandler, SA_SIGINFO);
 
   UnwindTest();
diff --git a/tests/stdatomic_test.cpp b/tests/stdatomic_test.cpp
index 8a6b267..11d41b4 100644
--- a/tests/stdatomic_test.cpp
+++ b/tests/stdatomic_test.cpp
@@ -181,7 +181,7 @@
 
 // And a rudimentary test of acquire-release memory ordering:
 
-constexpr static uint_least32_t BIG = 10000000ul; // Assumed even below.
+constexpr static uint_least32_t BIG = 30'000'000ul; // Assumed even below.
 
 struct three_atomics {
   atomic_uint_least32_t x;
diff --git a/tests/strings_test.cpp b/tests/strings_test.cpp
index ac327d4..0226d1a 100644
--- a/tests/strings_test.cpp
+++ b/tests/strings_test.cpp
@@ -38,6 +38,48 @@
   ASSERT_EQ(32, ffs(0x80000000));
 }
 
+TEST(STRINGS_TEST, ffsl) {
+  ASSERT_EQ( 0, ffsl(0x00000000L));
+  ASSERT_EQ( 1, ffsl(0x00000001L));
+  ASSERT_EQ( 6, ffsl(0x00000020L));
+  ASSERT_EQ(11, ffsl(0x00000400L));
+  ASSERT_EQ(16, ffsl(0x00008000L));
+  ASSERT_EQ(17, ffsl(0x00010000L));
+  ASSERT_EQ(22, ffsl(0x00200000L));
+  ASSERT_EQ(27, ffsl(0x04000000L));
+  ASSERT_EQ(32, ffsl(0x80000000L));
+#if defined(__LP64__)
+  ASSERT_EQ(33, ffsl(0x0000000100000000L));
+  ASSERT_EQ(38, ffsl(0x0000002000000000L));
+  ASSERT_EQ(43, ffsl(0x0000040000000000L));
+  ASSERT_EQ(48, ffsl(0x0000800000000000L));
+  ASSERT_EQ(49, ffsl(0x0001000000000000L));
+  ASSERT_EQ(54, ffsl(0x0020000000000000L));
+  ASSERT_EQ(59, ffsl(0x0400000000000000L));
+  ASSERT_EQ(64, ffsl(0x8000000000000000L));
+#endif
+}
+
+TEST(STRINGS_TEST, ffsll) {
+  ASSERT_EQ( 0, ffsll(0x0000000000000000LL));
+  ASSERT_EQ( 1, ffsll(0x0000000000000001LL));
+  ASSERT_EQ( 6, ffsll(0x0000000000000020LL));
+  ASSERT_EQ(11, ffsll(0x0000000000000400LL));
+  ASSERT_EQ(16, ffsll(0x0000000000008000LL));
+  ASSERT_EQ(17, ffsll(0x0000000000010000LL));
+  ASSERT_EQ(22, ffsll(0x0000000000200000LL));
+  ASSERT_EQ(27, ffsll(0x0000000004000000LL));
+  ASSERT_EQ(32, ffsll(0x0000000080000000LL));
+  ASSERT_EQ(33, ffsll(0x0000000100000000LL));
+  ASSERT_EQ(38, ffsll(0x0000002000000000LL));
+  ASSERT_EQ(43, ffsll(0x0000040000000000LL));
+  ASSERT_EQ(48, ffsll(0x0000800000000000LL));
+  ASSERT_EQ(49, ffsll(0x0001000000000000LL));
+  ASSERT_EQ(54, ffsll(0x0020000000000000LL));
+  ASSERT_EQ(59, ffsll(0x0400000000000000LL));
+  ASSERT_EQ(64, ffsll(0x8000000000000000LL));
+}
+
 TEST(STRINGS_TEST, strcasecmp) {
   ASSERT_EQ(0, strcasecmp("hello", "HELLO"));
   ASSERT_LT(strcasecmp("hello1", "hello2"), 0);
diff --git a/libc/include/android/legacy_strings_inlines.h b/tests/sys_auxv_test.cpp
similarity index 63%
rename from libc/include/android/legacy_strings_inlines.h
rename to tests/sys_auxv_test.cpp
index 2cc2da2..afd62ea 100644
--- a/libc/include/android/legacy_strings_inlines.h
+++ b/tests/sys_auxv_test.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2017 The Android Open Source Project
+ * Copyright (C) 2020 The Android Open Source Project
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -26,19 +26,32 @@
  * SUCH DAMAGE.
  */
 
-#pragma once
+#include <gtest/gtest.h>
 
-#include <sys/cdefs.h>
+#include <sys/auxv.h>
 
-#if defined(__i386__) && __ANDROID_API__ < 18
+TEST(sys_auxv, getauxval_HWCAP) {
+  __attribute__((__unused__)) unsigned long hwcap = getauxval(AT_HWCAP);
 
-#include <strings.h>
-
-__BEGIN_DECLS
-
-/* Everyone except x86 had ffs since the beginning. */
-static __inline int ffs(int __n) { return __builtin_ffs(__n); }
-
-__END_DECLS
-
+  // Check that the constants for *using* AT_HWCAP are also available.
+#if defined(__arm__)
+  ASSERT_NE(0, HWCAP_THUMB);
+#elif defined(__aarch64__)
+  ASSERT_NE(0, HWCAP_FP);
 #endif
+}
+
+TEST(sys_auxv, getauxval_HWCAP2) {
+#if defined(AT_HWCAP2)
+  __attribute__((__unused__)) unsigned long hwcap = getauxval(AT_HWCAP2);
+
+  // Check that the constants for *using* AT_HWCAP2 are also available.
+#if defined(__arm__)
+  ASSERT_NE(0, HWCAP2_AES);
+#elif defined(__aarch64__)
+  ASSERT_NE(0, HWCAP2_SVE2);
+#endif
+#else
+  GTEST_SKIP() << "No AT_HWCAP2 for this architecture.";
+#endif
+}
diff --git a/tests/sys_stat_test.cpp b/tests/sys_stat_test.cpp
index 71591c0..8f1437b 100644
--- a/tests/sys_stat_test.cpp
+++ b/tests/sys_stat_test.cpp
@@ -109,7 +109,6 @@
   int rc = statx(AT_FDCWD, "/proc/version", AT_STATX_SYNC_AS_STAT, STATX_ALL, &sx);
   if (rc == -1 && errno == ENOSYS) {
     GTEST_SKIP() << "statx returned ENOSYS";
-    return;
   }
   ASSERT_EQ(0, rc);
   struct stat64 sb;
diff --git a/tests/utils.h b/tests/utils.h
index 5014ef7..5085a7a 100644
--- a/tests/utils.h
+++ b/tests/utils.h
@@ -25,6 +25,8 @@
 #include <sys/wait.h>
 #include <unistd.h>
 
+#include <bionic/macros.h>
+
 #include <atomic>
 #include <string>
 #include <regex>
@@ -66,14 +68,6 @@
 
 #define SKIP_WITH_HWASAN if (running_with_hwasan()) GTEST_SKIP()
 
-static inline void* untag_address(void* addr) {
-#if defined(__LP64__)
-  constexpr uintptr_t mask = (static_cast<uintptr_t>(1) << 56) - 1;
-  addr = reinterpret_cast<void*>(reinterpret_cast<uintptr_t>(addr) & mask);
-#endif
-  return addr;
-}
-
 #if defined(__linux__)
 
 #include <sys/sysmacros.h>