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x86/acpi: Annotate indirect branch as safe

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This indirect jump is harmless; annotate it to keep objtool's retpoline
validation happy.

Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>
Cc: Len Brown <len.brown@intel.com>
Cc: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Link: https://lore.kernel.org/r/a7288e7043265d95c1a5d64f9fd751ead4854bdc.1611263462.git.jpoimboe@redhat.com
This commit is contained in:
Josh Poimboeuf 2021-01-21 15:29:32 -06:00
parent 7cae4b1cf1
commit f83d1a0190
1 changed files with 2 additions and 0 deletions
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2
arch/x86/kernel/acpi/wakeup_64.S
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@ -7,6 +7,7 @@
#include <asm/msr.h>
#include <asm/asm-offsets.h>
#include <asm/frame.h>
#include <asm/nospec-branch.h>
# Copyright 2003 Pavel Machek <pavel@suse.cz
@ -39,6 +40,7 @@ SYM_FUNC_START(wakeup_long64)
movq saved_rbp, %rbp
movq saved_rip, %rax
ANNOTATE_RETPOLINE_SAFE
jmp *%rax
SYM_FUNC_END(wakeup_long64)