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x86, AMD: Remove needless CPU family check (for L3 cache info)

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Old 32-bit AMD CPUs (all w/o L3 cache) should always return 0
for cpuid_edx(0x80000006).

For unknown reason the 32-bit implementation differed from the
64-bit implementation. See commit 67cddd9479 ("i386: Add L3 cache
support to AMD CPUID4 emulation"). The current check is the
result of the x86 merge.

Signed-off-by: Andreas Herrmann <[email protected]>
Cc: Andi Kleen <[email protected]>
LKML-Reference: <[email protected]>
Signed-off-by: Ingo Molnar <[email protected]>
This commit is contained in:
Andreas Herrmann 2010-09-02 15:37:10 +02:00 • committed by Ingo Molnar
commit d9fadd7ba9
1 changed files with 1 additions and 1 deletions
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2
arch/x86/kernel/cpu/amd.c
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@ -540,7 +540,7 @@ static void __cpuinit init_amd(struct cpuinfo_x86 *c)
#endif
if (c->extended_cpuid_level >= 0x80000006) {
if ((c->x86 >= 0x0f) && (cpuid_edx(0x80000006) & 0xf000))
if (cpuid_edx(0x80000006) & 0xf000)
num_cache_leaves = 4;
else
num_cache_leaves = 3;