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authorDavid S. Miller <davem@davemloft.net>2014-08-05 18:57:18 -0700
committerDavid S. Miller <davem@davemloft.net>2014-08-05 18:57:18 -0700
commite9011d086674caeedb0ffb6eb5b8bc5920821df3 (patch)
treeed5d06353d8dc1fa5f6da349808f8345ca2291a5 /arch/x86/kernel/cpu/intel_cacheinfo.c
parentcfcfe22256d5a8a14924a1145d56017b043b554f (diff)
parentc78f77e20d2ba5d4d5e478e85a6fb42556893e2d (diff)
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc
Conflicts: arch/sparc/mm/init_64.c Conflict was simple non-overlapping additions. Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/x86/kernel/cpu/intel_cacheinfo.c')
-rw-r--r--arch/x86/kernel/cpu/intel_cacheinfo.c12
1 files changed, 12 insertions, 0 deletions
diff --git a/arch/x86/kernel/cpu/intel_cacheinfo.c b/arch/x86/kernel/cpu/intel_cacheinfo.c
index a952e9c85b6..9c8f7394c61 100644
--- a/arch/x86/kernel/cpu/intel_cacheinfo.c
+++ b/arch/x86/kernel/cpu/intel_cacheinfo.c
@@ -730,6 +730,18 @@ unsigned int init_intel_cacheinfo(struct cpuinfo_x86 *c)
#endif
}
+#ifdef CONFIG_X86_HT
+ /*
+ * If cpu_llc_id is not yet set, this means cpuid_level < 4 which in
+ * turns means that the only possibility is SMT (as indicated in
+ * cpuid1). Since cpuid2 doesn't specify shared caches, and we know
+ * that SMT shares all caches, we can unconditionally set cpu_llc_id to
+ * c->phys_proc_id.
+ */
+ if (per_cpu(cpu_llc_id, cpu) == BAD_APICID)
+ per_cpu(cpu_llc_id, cpu) = c->phys_proc_id;
+#endif
+
c->x86_cache_size = l3 ? l3 : (l2 ? l2 : (l1i+l1d));
return l2;