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x86/entry/64_compat: Make labels local

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... so that they don't appear as symbols in the final ELF.

Signed-off-by: Borislav Petkov <bp@suse.de>
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>
Link: http://lkml.kernel.org/r/1449916077-6506-1-git-send-email-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Borislav Petkov 2015-12-12 11:27:57 +01:00 committed by Ingo Molnar
parent d51953b087
commit f74acf0e43
1 changed files with 5 additions and 5 deletions
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10
arch/x86/entry/entry_64_compat.S
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@ -96,15 +96,15 @@ ENTRY(entry_SYSENTER_compat)
* This needs to happen before enabling interrupts so that * This needs to happen before enabling interrupts so that
* we don't get preempted with NT set. * we don't get preempted with NT set.
* *
* NB.: sysenter_fix_flags is a label with the code under it moved * NB.: .Lsysenter_fix_flags is a label with the code under it moved
* out-of-line as an optimization: NT is unlikely to be set in the * out-of-line as an optimization: NT is unlikely to be set in the
* majority of the cases and instead of polluting the I$ unnecessarily, * majority of the cases and instead of polluting the I$ unnecessarily,
* we're keeping that code behind a branch which will predict as * we're keeping that code behind a branch which will predict as
* not-taken and therefore its instructions won't be fetched. * not-taken and therefore its instructions won't be fetched.
*/ */
testl $X86_EFLAGS_NT, EFLAGS(%rsp) testl $X86_EFLAGS_NT, EFLAGS(%rsp)
jnz sysenter_fix_flags jnz .Lsysenter_fix_flags
sysenter_flags_fixed: .Lsysenter_flags_fixed:
/* /*
* User mode is traced as though IRQs are on, and SYSENTER * User mode is traced as though IRQs are on, and SYSENTER
@ -119,10 +119,10 @@ sysenter_flags_fixed:
"jmp .Lsyscall_32_done", X86_FEATURE_XENPV "jmp .Lsyscall_32_done", X86_FEATURE_XENPV
jmp sysret32_from_system_call jmp sysret32_from_system_call
sysenter_fix_flags: .Lsysenter_fix_flags:
pushq $X86_EFLAGS_FIXED pushq $X86_EFLAGS_FIXED
popfq popfq
jmp sysenter_flags_fixed jmp .Lsysenter_flags_fixed
ENDPROC(entry_SYSENTER_compat) ENDPROC(entry_SYSENTER_compat)
/* /*