From d167a51877e94dda73dd656c51f363502309f713 Mon Sep 17 00:00:00 2001 From: Gerd Hoffmann Date: Mon, 26 Jun 2006 13:56:16 +0200 Subject: [PATCH] x86_64: x86_64 version of the smp alternative patch. Changes are largely identical to the i386 version: * alternative #define are moved to the new alternative.h file. * one new elf section with pointers to the lock prefixes which can be nop'ed out for non-smp. * two new elf sections simliar to the "classic" alternatives to replace SMP code with simpler UP code. * fixup headers to use alternative.h instead of defining their own LOCK / LOCK_PREFIX macros. The patch reuses the i386 version of the alternatives code to avoid code duplication. The code in alternatives.c was shuffled around a bit to reduce the number of #ifdefs needed. It also got some tweaks needed for x86_64 (vsyscall page handling) and new features (noreplacement option which was x86_64 only up to now). Debug printk's are changed from compile-time to runtime. Loosely based on a early version from Bastian Blank Signed-off-by: Gerd Hoffmann Signed-off-by: Andi Kleen Signed-off-by: Linus Torvalds --- include/asm-i386/alternative.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/asm-i386/alternative.h') diff --git a/include/asm-i386/alternative.h b/include/asm-i386/alternative.h index d79e9ee10fd7..c61bd1a17f37 100644 --- a/include/asm-i386/alternative.h +++ b/include/asm-i386/alternative.h @@ -5,6 +5,8 @@ #include +#include + struct alt_instr { u8 *instr; /* original instruction */ u8 *replacement; -- cgit v1.2.1