From 7475271004b66e9c22e1bb28f240a38c5d6fe76e Mon Sep 17 00:00:00 2001 From: Alexander Duyck Date: Thu, 1 Jul 2010 13:28:27 +0000 Subject: [PATCH] x86: Drop CONFIG_MCORE2 check around setting of NET_IP_ALIGN This patch removes the CONFIG_MCORE2 check from around NET_IP_ALIGN. It is based on a suggestion from Andi Kleen. The assumption is that there are not any x86 cores where unaligned access is really slow, and this change would allow for a performance improvement to still exist on configurations that are not necessarily optimized for Core 2. Cc: Andi Kleen Cc: Thomas Gleixner Cc: Ingo Molnar Cc: "H. Peter Anvin" Cc: x86@kernel.org Signed-off-by: Alexander Duyck Signed-off-by: Jeff Kirsher Acked-by: H. Peter Anvin Signed-off-by: David S. Miller --- arch/x86/include/asm/system.h | 2 -- 1 file changed, 2 deletions(-) diff --git a/arch/x86/include/asm/system.h b/arch/x86/include/asm/system.h index b4293fc8b798..1db9bd2281d7 100644 --- a/arch/x86/include/asm/system.h +++ b/arch/x86/include/asm/system.h @@ -457,7 +457,6 @@ static inline void rdtsc_barrier(void) alternative(ASM_NOP3, "lfence", X86_FEATURE_LFENCE_RDTSC); } -#ifdef CONFIG_MCORE2 /* * We handle most unaligned accesses in hardware. On the other hand * unaligned DMA can be quite expensive on some Nehalem processors. @@ -465,5 +464,4 @@ static inline void rdtsc_barrier(void) * Based on this we disable the IP header alignment in network drivers. */ #define NET_IP_ALIGN 0 -#endif #endif /* _ASM_X86_SYSTEM_H */ -- 2.20.1