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: 9bc0bb5072
("objtool/x86: Rewrite retpoline thunk calls")
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/YNCgxwLBiK9wclYJ@hirez.programming.kicks-ass.net
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@ -58,12 +58,16 @@ SYM_FUNC_START_NOALIGN(__x86_indirect_alt_call_\reg)
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2: .skip 5-(2b-1b), 0x90
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SYM_FUNC_END(__x86_indirect_alt_call_\reg)
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STACK_FRAME_NON_STANDARD(__x86_indirect_alt_call_\reg)
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SYM_FUNC_START_NOALIGN(__x86_indirect_alt_jmp_\reg)
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ANNOTATE_RETPOLINE_SAFE
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1: jmp *%\reg
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2: .skip 5-(2b-1b), 0x90
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SYM_FUNC_END(__x86_indirect_alt_jmp_\reg)
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STACK_FRAME_NON_STANDARD(__x86_indirect_alt_jmp_\reg)
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.endm
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/*
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