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authorSuresh Siddha <suresh.b.siddha@intel.com>2005-11-05 17:25:53 +0100
committerLinus Torvalds <torvalds@g5.osdl.org>2005-11-14 19:55:14 -0800
commitf5f786d0455c359c554b8f74783f887c0a2c9fac (patch)
tree2d8bf241afe4d9242657f29f6494ce8763b3418d
parente9b59d834faf0305cb6214a358f65f72c57b9e99 (diff)
[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 <suresh.b.siddha@intel.com> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
-rw-r--r--arch/i386/kernel/cpu/common.c4
-rw-r--r--arch/x86_64/kernel/setup.c4
2 files changed, 4 insertions, 4 deletions
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;
diff --git a/arch/x86_64/kernel/setup.c b/arch/x86_64/kernel/setup.c
index da0bc3e7bdf..f27731ac95c 100644
--- a/arch/x86_64/kernel/setup.c
+++ b/arch/x86_64/kernel/setup.c
@@ -1060,10 +1060,10 @@ void __cpuinit early_identify_cpu(struct cpuinfo_x86 *c)
c->x86 = (tfms >> 8) & 0xf;
c->x86_model = (tfms >> 4) & 0xf;
c->x86_mask = tfms & 0xf;
- if (c->x86 == 0xf) {
+ if (c->x86 == 0xf)
c->x86 += (tfms >> 20) & 0xff;
+ if (c->x86 >= 0x6)
c->x86_model += ((tfms >> 16) & 0xF) << 4;
- }
if (c->x86_capability[0] & (1<<19))
c->x86_clflush_size = ((misc >> 8) & 0xff) * 8;
} else {