diff options
| author | Peter Zijlstra <peterz@infradead.org> | 2021-06-21 17:13:55 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-07-25 12:26:20 +0300 |
| commit | f231b2ee8533d79b93bd163e93caf578d991726b (patch) | |
| tree | 03bf77e9ee9a1ae1a7f5664fc4be6460607f9880 /arch/x86/lib/retpoline.S | |
| parent | e32542e9ed362bf8ea48941d965495e1593b5cef (diff) | |
| download | linux-f231b2ee8533d79b93bd163e93caf578d991726b.tar.xz | |
objtool/x86: Ignore __x86_indirect_alt_* symbols
commit 31197d3a0f1caeb60fb01f6755e28347e4f44037 upstream.
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: 9bc0bb50727c ("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
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch/x86/lib/retpoline.S')
| -rw-r--r-- | arch/x86/lib/retpoline.S | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/x86/lib/retpoline.S b/arch/x86/lib/retpoline.S index fa30f2326547..5385d26af6e4 100644 --- a/arch/x86/lib/retpoline.S +++ b/arch/x86/lib/retpoline.S @@ -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 /* |