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x86-64: Reduce SMP locks table size

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Reduce the SMP locks table size by using relative pointers instead of
absolute ones, thus cutting the table size by half.

Signed-off-by: Jan Beulich <jbeulich@novell.com>
LKML-Reference: <4BCF30FE020000780003B3B6@vpn.id2.novell.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
This commit is contained in:
Jan Beulich
2010-04-21 16:08:14 +01:00
committed by H. Peter Anvin
parent 402af0d7c6
commit 5967ed87ad
3 changed files with 29 additions and 24 deletions
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4
arch/x86/include/asm/alternative.h
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@ -30,8 +30,8 @@
#ifdef CONFIG_SMP
#define LOCK_PREFIX \
".section .smp_locks,\"a\"\n" \
_ASM_ALIGN "\n" \
_ASM_PTR "661f\n" /* address */ \
".balign 4\n" \
".long 661f - .\n" /* offset */ \
".previous\n" \
"661:\n\tlock; "