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| author | Thomas Gleixner <tglx@linutronix.de> | 2017-02-16 19:51:27 +0100 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2017-02-16 19:51:27 +0100 |
| commit | 5b1ad68f9b1951ef78312d2935906cc8a8bd2e12 (patch) | |
| tree | e81b71c961e885cef0d3992e083acec845166870 /arch/x86/kernel/cpu/amd.c | |
| parent | 1013fe32a63d1139b1b32049ea46c0c462738d8b (diff) | |
| parent | 7089db84e356562f8ba737c29e472cc42d530dbc (diff) | |
Merge branch 'linus' into x86/mm
Make sure to get the latest fixes before applying the ptdump enhancements.
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 |