diff options
| author | Arnaldo Carvalho de Melo <acme@redhat.com> | 2020-06-08 11:23:33 -0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2020-06-09 12:40:03 -0300 |
| commit | 7e579f3a074c9348389ea0cf0491264e1ffbc585 (patch) | |
| tree | 8decec2495734f10d5b1f197ac61625e0f3c57be /tools/arch/x86 | |
| parent | 6c3c184fc420a2d8233d0e0f977e7df8051c5edb (diff) | |
tools arch x86 uapi: Synch asm/unistd.h with the kernel sources
To pick up the change in:
700d3a5a664d ("x86/syscalls: Revert "x86/syscalls: Make __X32_SYSCALL_BIT be unsigned long"")
That doesn't trigger any changes in tooling and silences this perf build
warning:
Warning: Kernel ABI header at 'tools/arch/x86/include/uapi/asm/unistd.h' differs from latest version at 'arch/x86/include/uapi/asm/unistd.h'
diff -u tools/arch/x86/include/uapi/asm/unistd.h arch/x86/include/uapi/asm/unistd.h
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@suse.de>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/arch/x86')
| -rw-r--r-- | tools/arch/x86/include/uapi/asm/unistd.h | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/tools/arch/x86/include/uapi/asm/unistd.h b/tools/arch/x86/include/uapi/asm/unistd.h index 30d7d04d72d6..be5e2e747f50 100644 --- a/tools/arch/x86/include/uapi/asm/unistd.h +++ b/tools/arch/x86/include/uapi/asm/unistd.h @@ -2,7 +2,14 @@ #ifndef _UAPI_ASM_X86_UNISTD_H #define _UAPI_ASM_X86_UNISTD_H -/* x32 syscall flag bit */ +/* + * x32 syscall flag bit. Some user programs expect syscall NR macros + * and __X32_SYSCALL_BIT to have type int, even though syscall numbers + * are, for practical purposes, unsigned long. + * + * Fortunately, expressions like (nr & ~__X32_SYSCALL_BIT) do the right + * thing regardless. + */ #define __X32_SYSCALL_BIT 0x40000000 #ifndef __KERNEL__ |