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x86_64: Use string instruction memcpy/memset on AMD Fam10

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Andi Kleen 18 年之前
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共有 1 个文件被更改,包括 2 次插入0 次删除
  1. 2 0
      arch/x86_64/kernel/setup.c

+ 2 - 0
arch/x86_64/kernel/setup.c

@@ -575,6 +575,8 @@ static void __cpuinit init_amd(struct cpuinfo_x86 *c)
 	level = cpuid_eax(1);
 	if (c->x86 == 15 && ((level >= 0x0f48 && level < 0x0f50) || level >= 0x0f58))
 		set_bit(X86_FEATURE_REP_GOOD, &c->x86_capability);
+	if (c->x86 == 0x10)
+		set_bit(X86_FEATURE_REP_GOOD, &c->x86_capability);
 
 	/* Enable workaround for FXSAVE leak */
 	if (c->x86 >= 6)