diff --git a/libc/kernel/uapi/asm-x86/asm/amd_hsmp.h b/libc/kernel/uapi/asm-x86/asm/amd_hsmp.h
new file mode 100644
index 0000000..ed59bb8
--- /dev/null
+++ b/libc/kernel/uapi/asm-x86/asm/amd_hsmp.h
@@ -0,0 +1,136 @@
+/****************************************************************************
+ ****************************************************************************
+ ***
+ ***   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_ASM_X86_AMD_HSMP_H_
+#define _UAPI_ASM_X86_AMD_HSMP_H_
+#include <linux/types.h>
+#pragma pack(4)
+#define HSMP_MAX_MSG_LEN 8
+enum hsmp_message_ids {
+  HSMP_TEST = 1,
+  HSMP_GET_SMU_VER,
+  HSMP_GET_PROTO_VER,
+  HSMP_GET_SOCKET_POWER,
+  HSMP_SET_SOCKET_POWER_LIMIT,
+  HSMP_GET_SOCKET_POWER_LIMIT,
+  HSMP_GET_SOCKET_POWER_LIMIT_MAX,
+  HSMP_SET_BOOST_LIMIT,
+  HSMP_SET_BOOST_LIMIT_SOCKET,
+  HSMP_GET_BOOST_LIMIT,
+  HSMP_GET_PROC_HOT,
+  HSMP_SET_XGMI_LINK_WIDTH,
+  HSMP_SET_DF_PSTATE,
+  HSMP_SET_AUTO_DF_PSTATE,
+  HSMP_GET_FCLK_MCLK,
+  HSMP_GET_CCLK_THROTTLE_LIMIT,
+  HSMP_GET_C0_PERCENT,
+  HSMP_SET_NBIO_DPM_LEVEL,
+  HSMP_GET_DDR_BANDWIDTH = 0x14,
+  HSMP_GET_TEMP_MONITOR,
+  HSMP_MSG_ID_MAX,
+};
+struct hsmp_message {
+  __u32 msg_id;
+  __u16 num_args;
+  __u16 response_sz;
+  __u32 args[HSMP_MAX_MSG_LEN];
+  __u16 sock_ind;
+};
+enum hsmp_msg_type {
+  HSMP_RSVD = - 1,
+  HSMP_SET = 0,
+  HSMP_GET = 1,
+};
+struct hsmp_msg_desc {
+  int num_args;
+  int response_sz;
+  enum hsmp_msg_type type;
+};
+static const struct hsmp_msg_desc hsmp_msg_desc_table[] = {
+ {
+    0, 0, HSMP_RSVD
+  }
+ , {
+    1, 1, HSMP_GET
+  }
+ , {
+    0, 1, HSMP_GET
+  }
+ , {
+    0, 1, HSMP_GET
+  }
+ , {
+    0, 1, HSMP_GET
+  }
+ , {
+    1, 0, HSMP_SET
+  }
+ , {
+    0, 1, HSMP_GET
+  }
+ , {
+    0, 1, HSMP_GET
+  }
+ , {
+    1, 0, HSMP_SET
+  }
+ , {
+    1, 0, HSMP_SET
+  }
+ , {
+    1, 1, HSMP_GET
+  }
+ , {
+    0, 1, HSMP_GET
+  }
+ , {
+    1, 0, HSMP_SET
+  }
+ , {
+    1, 0, HSMP_SET
+  }
+ , {
+    0, 0, HSMP_SET
+  }
+ , {
+    0, 2, HSMP_GET
+  }
+ , {
+    0, 1, HSMP_GET
+  }
+ , {
+    0, 1, HSMP_GET
+  }
+ , {
+    1, 0, HSMP_SET
+  }
+ , {
+    0, 0, HSMP_RSVD
+  }
+ , {
+    0, 1, HSMP_GET
+  }
+ , {
+    0, 1, HSMP_GET
+  }
+ ,
+};
+#pragma pack()
+#define HSMP_BASE_IOCTL_NR 0xF8
+#define HSMP_IOCTL_CMD _IOWR(HSMP_BASE_IOCTL_NR, 0, struct hsmp_message)
+#endif
diff --git a/libc/kernel/uapi/asm-x86/asm/processor-flags.h b/libc/kernel/uapi/asm-x86/asm/processor-flags.h
index 85f9d7e..0a95afd 100644
--- a/libc/kernel/uapi/asm-x86/asm/processor-flags.h
+++ b/libc/kernel/uapi/asm-x86/asm/processor-flags.h
@@ -127,6 +127,8 @@
 #define X86_CR4_SMAP _BITUL(X86_CR4_SMAP_BIT)
 #define X86_CR4_PKE_BIT 22
 #define X86_CR4_PKE _BITUL(X86_CR4_PKE_BIT)
+#define X86_CR4_CET_BIT 23
+#define X86_CR4_CET _BITUL(X86_CR4_CET_BIT)
 #define X86_CR8_TPR _AC(0x0000000f, UL)
 #define CX86_PCR0 0x20
 #define CX86_GCR 0xb8
diff --git a/libc/kernel/uapi/asm-x86/asm/shmbuf.h b/libc/kernel/uapi/asm-x86/asm/shmbuf.h
index 03e195e..2a0dcb5 100644
--- a/libc/kernel/uapi/asm-x86/asm/shmbuf.h
+++ b/libc/kernel/uapi/asm-x86/asm/shmbuf.h
@@ -21,9 +21,11 @@
 #if !defined(__x86_64__) || !defined(__ILP32__)
 #include <asm-generic/shmbuf.h>
 #else
+#include <asm/ipcbuf.h>
+#include <asm/posix_types.h>
 struct shmid64_ds {
   struct ipc64_perm shm_perm;
-  size_t shm_segsz;
+  __kernel_size_t shm_segsz;
   __kernel_long_t shm_atime;
   __kernel_long_t shm_dtime;
   __kernel_long_t shm_ctime;
diff --git a/libc/kernel/uapi/asm-x86/asm/signal.h b/libc/kernel/uapi/asm-x86/asm/signal.h
index 8226da8..cbeeac4 100644
--- a/libc/kernel/uapi/asm-x86/asm/signal.h
+++ b/libc/kernel/uapi/asm-x86/asm/signal.h
@@ -90,7 +90,7 @@
 typedef struct sigaltstack {
   void __user * ss_sp;
   int ss_flags;
-  size_t ss_size;
+  __kernel_size_t ss_size;
 } stack_t;
 #endif
 #endif