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| author | David S. Miller <davem@davemloft.net> | 2017-02-16 19:34:01 -0500 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-02-16 19:34:01 -0500 |
| commit | 3f64116a838e6c3468f9d5eed7f1f87cf3a2c3eb (patch) | |
| tree | 388024d2ddbdcb9991ef4b472dfac31e425b807e /arch/x86/kernel/cpu/amd.c | |
| parent | f3caf8618bce7e86c6f4f86785dd004c71b63a2d (diff) | |
| parent | 4695daefba8df8a11fa0b0edd595eedae9ea59ae (diff) | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Diffstat (limited to 'arch/x86/kernel/cpu/amd.c')
| -rw-r--r-- | arch/x86/kernel/cpu/amd.c | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/arch/x86/kernel/cpu/amd.c b/arch/x86/kernel/cpu/amd.c index 1d3167269a67..2b4cf04239b6 100644 --- a/arch/x86/kernel/cpu/amd.c +++ b/arch/x86/kernel/cpu/amd.c @@ -309,8 +309,22 @@ static void amd_get_topology(struct cpuinfo_x86 *c) /* get information required for multi-node processors */ if (boot_cpu_has(X86_FEATURE_TOPOEXT)) { + u32 eax, ebx, ecx, edx; - node_id = cpuid_ecx(0x8000001e) & 7; + cpuid(0x8000001e, &eax, &ebx, &ecx, &edx); + + node_id = ecx & 0xff; + smp_num_siblings = ((ebx >> 8) & 0xff) + 1; + + if (c->x86 == 0x15) + c->cu_id = ebx & 0xff; + + if (c->x86 >= 0x17) { + c->cpu_core_id = ebx & 0xff; + + if (smp_num_siblings > 1) + c->x86_max_cores /= smp_num_siblings; + } /* * We may have multiple LLCs if L3 caches exist, so check if we |