From f5f786d0455c359c554b8f74783f887c0a2c9fac Mon Sep 17 00:00:00 2001 From: Suresh Siddha Date: Sat, 5 Nov 2005 17:25:53 +0100 Subject: [PATCH] x86-64/i386: Fix CPU model for family 6 According to cpuid instruction in IA32 SDM-Vol2, when computing cpu model, we need to consider extended model ID for family 0x6 also. AK: Also added fixes/simplifcation from Petr Vandrovec Signed-off-by: Suresh Siddha Signed-off-by: Andi Kleen Signed-off-by: Linus Torvalds --- arch/i386/kernel/cpu/common.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'arch/i386/kernel') diff --git a/arch/i386/kernel/cpu/common.c b/arch/i386/kernel/cpu/common.c index 74145a33cb0..35a67dab4a9 100644 --- a/arch/i386/kernel/cpu/common.c +++ b/arch/i386/kernel/cpu/common.c @@ -233,10 +233,10 @@ static void __init early_cpu_detect(void) cpuid(0x00000001, &tfms, &misc, &junk, &cap0); c->x86 = (tfms >> 8) & 15; c->x86_model = (tfms >> 4) & 15; - if (c->x86 == 0xf) { + if (c->x86 == 0xf) c->x86 += (tfms >> 20) & 0xff; + if (c->x86 >= 0x6) c->x86_model += ((tfms >> 16) & 0xF) << 4; - } c->x86_mask = tfms & 15; if (cap0 & (1<<19)) c->x86_cache_alignment = ((misc >> 8) & 0xff) * 8; -- cgit v1.2.3