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x86/asm: Fixup odd GEN-for-each-reg.h usage

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Currently GEN-for-each-reg.h usage leaves GEN defined, relying on any
subsequent usage to start with #undef, which is rude.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Borislav Petkov <bp@suse.de>
Acked-by: Josh Poimboeuf <jpoimboe@redhat.com>
Tested-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/r/20211026120310.041792350@infradead.org
This commit is contained in:
Peter Zijlstra 2021-10-26 14:01:39 +02:00
parent a92ede2d58
commit b6d3d9944b
2 changed files with 3 additions and 3 deletions
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2
arch/x86/include/asm/asm-prototypes.h
View file

@ -19,9 +19,9 @@ extern void cmpxchg8b_emu(void);
#ifdef CONFIG_RETPOLINE
#undef GEN
#define GEN(reg) \
extern asmlinkage void __x86_indirect_thunk_ ## reg (void);
#include <asm/GEN-for-each-reg.h>
#undef GEN
#endif /* CONFIG_RETPOLINE */

4
arch/x86/lib/retpoline.S
View file

@ -55,10 +55,10 @@ SYM_FUNC_END(__x86_indirect_thunk_\reg)
#define __EXPORT_THUNK(sym) _ASM_NOKPROBE(sym); EXPORT_SYMBOL(sym)
#define EXPORT_THUNK(reg) __EXPORT_THUNK(__x86_indirect_thunk_ ## reg)
#undef GEN
#define GEN(reg) THUNK reg
#include <asm/GEN-for-each-reg.h>
#undef GEN
#define GEN(reg) EXPORT_THUNK(reg)
#include <asm/GEN-for-each-reg.h>
#undef GEN