Commit 31197d3a authored by Peter Zijlstra's avatar Peter Zijlstra Committed by Ingo Molnar
Browse files

objtool/x86: Ignore __x86_indirect_alt_* symbols 



Because the __x86_indirect_alt* symbols are just that, objtool will
try and validate them as regular symbols, instead of the alternative
replacements that they are.

This goes sideways for FRAME_POINTER=y builds; which generate a fair
amount of warnings.

Fixes: 9bc0bb50 ("objtool/x86: Rewrite retpoline thunk calls")
Signed-off-by: default avatarPeter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: default avatarIngo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/YNCgxwLBiK9wclYJ@hirez.programming.kicks-ass.net
parent 13311e74

arch/x86/lib/retpoline.S

+4 −0
Original line number Diff line number Diff line
@@ -58,12 +58,16 @@ SYM_FUNC_START_NOALIGN(__x86_indirect_alt_call_\reg) 
2:	.skip	5-(2b-1b), 0x90

SYM_FUNC_END(__x86_indirect_alt_call_\reg)



STACK_FRAME_NON_STANDARD(__x86_indirect_alt_call_\reg)



SYM_FUNC_START_NOALIGN(__x86_indirect_alt_jmp_\reg)

	ANNOTATE_RETPOLINE_SAFE

1:	jmp	*%\reg

2:	.skip	5-(2b-1b), 0x90

SYM_FUNC_END(__x86_indirect_alt_jmp_\reg)



STACK_FRAME_NON_STANDARD(__x86_indirect_alt_jmp_\reg)



.endm



/*