diff options
| author | Andreas Herrmann <andreas.herrmann3@amd.com> | 2010-09-02 15:37:10 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2010-09-05 14:33:48 +0200 |
| commit | d9fadd7ba99a67030783a212bcb17d11f0678433 (patch) | |
| tree | 6aef819ce987cd81692df07287f7b9bbb2024934 /arch/x86/kernel/cpu | |
| parent | acf01734b1747b1ec4be6f159aff579ea5f7f8e2 (diff) | |
| download | op-kernel-dev-d9fadd7ba99a67030783a212bcb17d11f0678433.zip op-kernel-dev-d9fadd7ba99a67030783a212bcb17d11f0678433.tar.gz | |
x86, AMD: Remove needless CPU family check (for L3 cache info)
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 67cddd94799 ("i386: Add L3 cache
support to AMD CPUID4 emulation"). The current check is the
result of the x86 merge.
Signed-off-by: Andreas Herrmann <andreas.herrmann3@amd.com>
Cc: Andi Kleen <andi@firstfloor.org>
LKML-Reference: <20100902133710.GA5449@loge.amd.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/kernel/cpu')
| -rw-r--r-- | arch/x86/kernel/cpu/amd.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/kernel/cpu/amd.c b/arch/x86/kernel/cpu/amd.c index fc563fa..0f0ace5d 100644 --- a/arch/x86/kernel/cpu/amd.c +++ b/arch/x86/kernel/cpu/amd.c @@ -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; |
