Messages in this thread Patch in this message | | | Date | Wed, 20 Oct 2021 12:44:47 +0200 | From | Peter Zijlstra <> | Subject | [PATCH v2 05/14] x86/retpoline: Remove unused replacement symbols |
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Now that objtool no longer creates alternatives, these replacement symbols are no longer needed, remove them.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> --- arch/x86/lib/retpoline.S | 42 ------------------------------------------ 1 file changed, 42 deletions(-)
--- a/arch/x86/lib/retpoline.S +++ b/arch/x86/lib/retpoline.S @@ -41,36 +41,6 @@ SYM_FUNC_END(__x86_indirect_thunk_\reg) .endm /* - * This generates .altinstr_replacement symbols for use by objtool. They, - * however, must not actually live in .altinstr_replacement since that will be - * discarded after init, but module alternatives will also reference these - * symbols. - * - * Their names matches the "__x86_indirect_" prefix to mark them as retpolines. - */ -.macro ALT_THUNK reg - - .align 1 - -SYM_FUNC_START_NOALIGN(__x86_indirect_alt_call_\reg) - ANNOTATE_RETPOLINE_SAFE -1: 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 - -/* * Despite being an assembler file we can't just use .irp here * because __KSYM_DEPS__ only uses the C preprocessor and would * only see one instance of "__x86_indirect_thunk_\reg" rather @@ -92,15 +62,3 @@ STACK_FRAME_NON_STANDARD(__x86_indirect_ #undef GEN #define GEN(reg) EXPORT_THUNK(reg) #include <asm/GEN-for-each-reg.h> - -#undef GEN -#define GEN(reg) ALT_THUNK reg -#include <asm/GEN-for-each-reg.h> - -#undef GEN -#define GEN(reg) __EXPORT_THUNK(__x86_indirect_alt_call_ ## reg) -#include <asm/GEN-for-each-reg.h> - -#undef GEN -#define GEN(reg) __EXPORT_THUNK(__x86_indirect_alt_jmp_ ## reg) -#include <asm/GEN-for-each-reg.h>
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