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| author | Jan Beulich <jbeulich@novell.com> | 2008-12-16 11:40:27 +0000 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-12-16 18:40:32 +0100 |
| commit | b93a531e315e97ef00367099e6b5f19651936e20 (patch) | |
| tree | 231e6d626fbf85dd80d7cbac49a9c9a14282f898 /arch | |
| parent | 85072bd55219231b8ca5d9d3fa3492eb4fa6635f (diff) | |
| download | op-kernel-dev-b93a531e315e97ef00367099e6b5f19651936e20.zip op-kernel-dev-b93a531e315e97ef00367099e6b5f19651936e20.tar.gz | |
allow bug table entries to use relative pointers (and use it on x86-64)
Impact: reduce bug table size
This allows reducing the bug table size by half. Perhaps there are
other 64-bit architectures that could also make use of this.
Signed-off-by: Jan Beulich <jbeulich@novell.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/Kconfig | 4 | ||||
| -rw-r--r-- | arch/x86/include/asm/bug.h | 2 |
2 files changed, 5 insertions, 1 deletions
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index ac22bb7..ab98cca 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -87,6 +87,10 @@ config GENERIC_IOMAP config GENERIC_BUG def_bool y depends on BUG + select GENERIC_BUG_RELATIVE_POINTERS if X86_64 + +config GENERIC_BUG_RELATIVE_POINTERS + bool config GENERIC_HWEIGHT def_bool y diff --git a/arch/x86/include/asm/bug.h b/arch/x86/include/asm/bug.h index 3def206..d9cf1cd 100644 --- a/arch/x86/include/asm/bug.h +++ b/arch/x86/include/asm/bug.h @@ -9,7 +9,7 @@ #ifdef CONFIG_X86_32 # define __BUG_C0 "2:\t.long 1b, %c0\n" #else -# define __BUG_C0 "2:\t.quad 1b, %c0\n" +# define __BUG_C0 "2:\t.long 1b - 2b, %c0 - 2b\n" #endif #define BUG() \ |
