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UBUNTU: SAUCE: apm -- annotate indirect calls within firmware_restrict_branch_speculation_{start,end}

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BugLink: http://bugs.launchpad.net/bugs/1758856

Signed-off-by: Andy Whitcroft <apw@canonical.com>
Signed-off-by: Seth Forshee <seth.forshee@canonical.com>
This commit is contained in:
Andy Whitcroft
2018-03-20 12:19:52 +00:00
committed by Paolo Pisati
parent 6c6de71a94
commit e5e24f4025
1 changed files with 2 additions and 0 deletions
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arch/x86/include/asm/apm.h
+2
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@@ -35,6 +35,7 @@ static inline void apm_bios_call_asm(u32 func, u32 ebx_in, u32 ecx_in,
__asm__ __volatile__(APM_DO_ZERO_SEGS
"pushl %%edi\n\t"
"pushl %%ebp\n\t"
ANNOTATE_RETPOLINE_SAFE /* FRBS */
"lcall *%%cs:apm_bios_entry\n\t"
"setc %%al\n\t"
"popl %%ebp\n\t"
@@ -59,6 +60,7 @@ static inline bool apm_bios_call_simple_asm(u32 func, u32 ebx_in,
__asm__ __volatile__(APM_DO_ZERO_SEGS
"pushl %%edi\n\t"
"pushl %%ebp\n\t"
ANNOTATE_RETPOLINE_SAFE /* FRBS */
"lcall *%%cs:apm_bios_entry\n\t"
"setc %%bl\n\t"
"popl %%ebp\n\t"