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loongarch: Use ASM_REACHABLE

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annotate_reachable() is unreliable since the compiler is free to place
random code inbetween two consecutive asm() statements.

This removes the last and only annotate_reachable() user.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Josh Poimboeuf <jpoimboe@kernel.org>
Link: https://lore.kernel.org/r/20241128094312.133437051@infradead.org
This commit is contained in:
Peter Zijlstra 2024-11-28 10:39:03 +01:00
parent 2190966fbc
commit 624bde3465
1 changed files with 7 additions and 6 deletions
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13
arch/loongarch/include/asm/bug.h
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@ -4,6 +4,7 @@
#include <asm/break.h>
#include <linux/stringify.h>
#include <linux/objtool.h>
#ifndef CONFIG_DEBUG_BUGVERBOSE
#define _BUGVERBOSE_LOCATION(file, line)
@ -33,25 +34,25 @@
#define ASM_BUG_FLAGS(flags) \
__BUG_ENTRY(flags) \
break BRK_BUG
break BRK_BUG;
#define ASM_BUG() ASM_BUG_FLAGS(0)
#define __BUG_FLAGS(flags) \
asm_inline volatile (__stringify(ASM_BUG_FLAGS(flags)));
#define __BUG_FLAGS(flags, extra) \
asm_inline volatile (__stringify(ASM_BUG_FLAGS(flags)) \
extra);
#define __WARN_FLAGS(flags) \
do { \
instrumentation_begin(); \
__BUG_FLAGS(BUGFLAG_WARNING|(flags)); \
annotate_reachable(); \
__BUG_FLAGS(BUGFLAG_WARNING|(flags), ASM_REACHABLE); \
instrumentation_end(); \
} while (0)
#define BUG() \
do { \
instrumentation_begin(); \
__BUG_FLAGS(0); \
__BUG_FLAGS(0, ""); \
unreachable(); \
} while (0)