diff options
| author | Andy Lutomirski <luto@kernel.org> | 2015-10-05 17:48:15 -0700 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2015-10-09 09:41:10 +0200 |
| commit | 5f310f739b4cc343f3f087681e41bbc2f0ce902d (patch) | |
| tree | 97260d2bbfbcd9abd277148c3e8b7e4c49e6c163 /arch/x86/entry/vdso | |
| parent | 150ac78d63afb96360dab448b7b4d33c98c8266c (diff) | |
x86/entry/32: Re-implement SYSENTER using the new C path
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Link: http://lkml.kernel.org/r/5b99659e8be70f3dd10cd8970a5c90293d9ad9a7.1444091585.git.luto@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/x86/entry/vdso')
| -rw-r--r-- | arch/x86/entry/vdso/vdso32/system_call.S | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/x86/entry/vdso/vdso32/system_call.S b/arch/x86/entry/vdso/vdso32/system_call.S index 00157cae71e0..93bd8452383f 100644 --- a/arch/x86/entry/vdso/vdso32/system_call.S +++ b/arch/x86/entry/vdso/vdso32/system_call.S @@ -34,6 +34,8 @@ __kernel_vsyscall: /* If SYSENTER (Intel) or SYSCALL32 (AMD) is available, use it. */ ALTERNATIVE_2 "", "sysenter", X86_FEATURE_SYSENTER32, \ "syscall", X86_FEATURE_SYSCALL32 +#else + ALTERNATIVE "", "sysenter", X86_FEATURE_SEP #endif /* Enter using int $0x80 */ |