Messages in this thread Patch in this message | | | From | Borislav Petkov <> | Subject | [PATCH 04/20] x86: cacheinfo: fixup L3 cache information for AMD Magny-Cours | Date | Tue, 28 Jul 2009 17:06:04 +0200 |
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From: Andreas Herrmann <andreas.herrmann3@amd.com>
L3 cache size, associativity and shared_cpu information need to be adapted to show information for an internal node instead of the entire physical package.
Signed-off-by: Andreas Herrmann <andreas.herrmann3@amd.com> --- arch/x86/kernel/cpu/intel_cacheinfo.c | 20 ++++++++++++++------ 1 files changed, 14 insertions(+), 6 deletions(-)
diff --git a/arch/x86/kernel/cpu/intel_cacheinfo.c b/arch/x86/kernel/cpu/intel_cacheinfo.c index 789efe2..3b54a1e 100644 --- a/arch/x86/kernel/cpu/intel_cacheinfo.c +++ b/arch/x86/kernel/cpu/intel_cacheinfo.c @@ -241,7 +241,7 @@ amd_cpuid4(int leaf, union _cpuid4_leaf_eax *eax, case 0: if (!l1->val) return; - assoc = l1->assoc; + assoc = assocs[l1->assoc]; line_size = l1->line_size; lines_per_tag = l1->lines_per_tag; size_in_kb = l1->size_in_kb; @@ -249,7 +249,7 @@ amd_cpuid4(int leaf, union _cpuid4_leaf_eax *eax, case 2: if (!l2.val) return; - assoc = l2.assoc; + assoc = assocs[l2.assoc]; line_size = l2.line_size; lines_per_tag = l2.lines_per_tag; /* cpu_data has errata corrections for K7 applied */ @@ -258,10 +258,14 @@ amd_cpuid4(int leaf, union _cpuid4_leaf_eax *eax, case 3: if (!l3.val) return; - assoc = l3.assoc; + assoc = assocs[l3.assoc]; line_size = l3.line_size; lines_per_tag = l3.lines_per_tag; size_in_kb = l3.size_encoded * 512; + if (boot_cpu_has(X86_FEATURE_AMD_DCM)) { + size_in_kb = size_in_kb >> 1; + assoc = assoc >> 1; + } break; default: return; @@ -278,10 +282,10 @@ amd_cpuid4(int leaf, union _cpuid4_leaf_eax *eax, eax->split.num_cores_on_die = current_cpu_data.x86_max_cores - 1; - if (assoc == 0xf) + if (assoc == 0xffff) eax->split.is_fully_associative = 1; ebx->split.coherency_line_size = line_size - 1; - ebx->split.ways_of_associativity = assocs[assoc] - 1; + ebx->split.ways_of_associativity = assoc - 1; ebx->split.physical_line_partition = lines_per_tag - 1; ecx->split.number_of_sets = (size_in_kb * 1024) / line_size / (ebx->split.ways_of_associativity + 1) - 1; @@ -598,7 +602,11 @@ static void __cpuinit get_cpu_leaves(void *_retval) cache_remove_shared_cpu_map(cpu, i); break; } - cache_shared_cpu_map_setup(cpu, j); + if (boot_cpu_has(X86_FEATURE_AMD_DCM)) + cpumask_copy(to_cpumask(this_leaf->shared_cpu_map), + topology_cpu_node_cpumask(cpu)); + else + cache_shared_cpu_map_setup(cpu, j); } } -- 1.6.3.3
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