commit 0f0c18f695543b15b852f68f297744d03d642a26
author Elliott Hughes <enh@google.com> Wed Mar 29 15:53:31 2023 -0700
committer Elliott Hughes <enh@google.com> Thu Mar 30 12:47:08 2023 -0700
tree 678ced87586de76d97eb5677b2cb06c451c8a105
parent 9dfcaa64e85ede5b7867185d32dca18c49455f3a

uapi headers: simplify the <linux/compiler.h> stuff.

We don't really need <linux/compiler.h> and <linux/compiler_types.h>. We
already have a mechanism to remove unused macros, so let's do that. We
don't currently have a way to remove unused #includes, so we still need
<linux/compiler.h> and <linux/compiler_types.h> files (but I've clarified
the comments in them).

I've kept the empty definitions of `__user` and `__force` for source
compatibility. (We had one security test at least that was assuming
a kernel struct definition will "just work".)

Bug: http://b/262917450
Test: treehugger
Change-Id: Iacbbbc1aeef9a4fac52dabd7811ab875cc267d4f

libc/kernel/uapi/xen/gntdev.h

diff --git a/libc/kernel/uapi/xen/gntdev.h b/libc/kernel/uapi/xen/gntdev.h
index 1e78ac3..eada73c 100644
--- a/libc/kernel/uapi/xen/gntdev.h
+++ b/libc/kernel/uapi/xen/gntdev.h
@@ -55,7 +55,7 @@
 };
 struct gntdev_grant_copy_segment {
   union {
-    void __user * virt;
+    void  * virt;
     struct {
       grant_ref_t ref;
       __u16 offset;
@@ -69,7 +69,7 @@
 #define IOCTL_GNTDEV_GRANT_COPY _IOC(_IOC_NONE, 'G', 8, sizeof(struct ioctl_gntdev_grant_copy))
 struct ioctl_gntdev_grant_copy {
   unsigned int count;
-  struct gntdev_grant_copy_segment __user * segments;
+  struct gntdev_grant_copy_segment  * segments;
 };
 #define UNMAP_NOTIFY_CLEAR_BYTE 0x1
 #define UNMAP_NOTIFY_SEND_EVENT 0x2

libc/kernel/uapi/xen/privcmd.h

diff --git a/libc/kernel/uapi/xen/privcmd.h b/libc/kernel/uapi/xen/privcmd.h
index 145446b..21d9f84 100644
--- a/libc/kernel/uapi/xen/privcmd.h
+++ b/libc/kernel/uapi/xen/privcmd.h
@@ -33,13 +33,13 @@
 struct privcmd_mmap {
   int num;
   domid_t dom;
-  struct privcmd_mmap_entry __user * entry;
+  struct privcmd_mmap_entry  * entry;
 };
 struct privcmd_mmapbatch {
   int num;
   domid_t dom;
   __u64 addr;
-  xen_pfn_t __user * arr;
+  xen_pfn_t  * arr;
 };
 #define PRIVCMD_MMAPBATCH_MFN_ERROR 0xf0000000U
 #define PRIVCMD_MMAPBATCH_PAGED_ERROR 0x80000000U
@@ -47,17 +47,17 @@
   unsigned int num;
   domid_t dom;
   __u64 addr;
-  const xen_pfn_t __user * arr;
-  int __user * err;
+  const xen_pfn_t  * arr;
+  int  * err;
 };
 struct privcmd_dm_op_buf {
-  void __user * uptr;
+  void  * uptr;
   size_t size;
 };
 struct privcmd_dm_op {
   domid_t dom;
   __u16 num;
-  const struct privcmd_dm_op_buf __user * ubufs;
+  const struct privcmd_dm_op_buf  * ubufs;
 };
 struct privcmd_mmap_resource {
   domid_t dom;