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x86/bugs: Make i386 use GENERIC_BUG_RELATIVE_POINTERS 

Linus figured less #ifdef is more better and making x86-32 use
GENERIC_BUG_RELATIVE_POINTERS removes one layer of macro magic from
the bug.h bits.

Suggested-by: Linus Torvalds <torvalds@linuxfoundation.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
This commit is contained in:
Peter Zijlstra 2025-11-26 11:57:06 +01:00
parent d62e4f2b95
commit b0a848f4a4
2 changed files with 5 additions and 11 deletions
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2
arch/x86/Kconfig
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@ -380,7 +380,7 @@ config GENERIC_CSUM
config GENERIC_BUG
def_bool y
depends on BUG
select GENERIC_BUG_RELATIVE_POINTERS if X86_64
select GENERIC_BUG_RELATIVE_POINTERS
config GENERIC_BUG_RELATIVE_POINTERS
bool

12
arch/x86/include/asm/bug.h
View File

@ -42,15 +42,9 @@ extern void __WARN_trap(struct bug_entry *bug, ...);
#ifdef CONFIG_GENERIC_BUG
#ifdef CONFIG_X86_32
#define __BUG_REL(val) ".long " val
#else
#define __BUG_REL(val) ".long " val " - ."
#endif
#ifdef CONFIG_DEBUG_BUGVERBOSE
#define __BUG_ENTRY_VERBOSE(file, line) \
"\t" __BUG_REL(file) "\t# bug_entry::file\n" \
"\t.long " file " - .\t# bug_entry::file\n" \
"\t.word " line "\t# bug_entry::line\n"
#else
#define __BUG_ENTRY_VERBOSE(file, line)
@ -59,7 +53,7 @@ extern void __WARN_trap(struct bug_entry *bug, ...);
#if defined(CONFIG_X86_64) || defined(CONFIG_DEBUG_BUGVERBOSE_DETAILED)
#define HAVE_ARCH_BUG_FORMAT
#define __BUG_ENTRY_FORMAT(format) \
"\t" __BUG_REL(format) "\t# bug_entry::format\n"
"\t.long " format " - .\t# bug_entry::format\n"
#else
#define __BUG_ENTRY_FORMAT(format)
#endif
@ -69,7 +63,7 @@ extern void __WARN_trap(struct bug_entry *bug, ...);
#endif
#define __BUG_ENTRY(format, file, line, flags) \
__BUG_REL("1b") "\t# bug_entry::bug_addr\n" \
"\t.long 1b - ." "\t# bug_entry::bug_addr\n" \
__BUG_ENTRY_FORMAT(format) \
__BUG_ENTRY_VERBOSE(file, line) \
"\t.word " flags "\t# bug_entry::flags\n"