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| author | Andi Kleen <ak@suse.de> | 2007-07-21 17:10:03 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-07-21 18:37:08 -0700 |
| commit | 67cddd947992b02f01ad093ec814738c5827d17c (patch) | |
| tree | 5c10c3a1f645c119e0cc23ecdfc7c3c4dd7eacad /arch/x86_64/kernel | |
| parent | 2aae950b21e4bc789d1fc6668faf67e8748300b7 (diff) | |
| download | blackbird-op-linux-67cddd947992b02f01ad093ec814738c5827d17c.tar.gz blackbird-op-linux-67cddd947992b02f01ad093ec814738c5827d17c.zip | |
i386: Add L3 cache support to AMD CPUID4 emulation
With that an L3 cache is correctly reported in the cache information in /sys
With fixes from Andreas Herrmann and Dean Gaudet and Joachim Deguara
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/x86_64/kernel')
| -rw-r--r-- | arch/x86_64/kernel/setup.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/arch/x86_64/kernel/setup.c b/arch/x86_64/kernel/setup.c index 675b3d6de10b..6fa0a302e2aa 100644 --- a/arch/x86_64/kernel/setup.c +++ b/arch/x86_64/kernel/setup.c @@ -602,8 +602,11 @@ static void __cpuinit init_amd(struct cpuinfo_x86 *c) if (c->extended_cpuid_level >= 0x80000008) amd_detect_cmp(c); - /* Fix cpuid4 emulation for more */ - num_cache_leaves = 3; + if (c->extended_cpuid_level >= 0x80000006 && + (cpuid_edx(0x80000006) & 0xf000)) + num_cache_leaves = 4; + else + num_cache_leaves = 3; /* RDTSC can be speculated around */ clear_bit(X86_FEATURE_SYNC_RDTSC, &c->x86_capability); |
