Skip to content

Commit

Permalink
x86: Use hard_smp_processor_id() to get apic id for AMD K8 cpus
Browse files Browse the repository at this point in the history
Otherwise, system with apci id lifting will have wrong apicid in
/proc/cpuinfo.

and use that in srat_detect_node().

Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Cc: Andreas Herrmann <andreas.herrmann3@amd.com>
Cc: Suresh Siddha <suresh.b.siddha@intel.com>
Cc: Cyrill Gorcunov <gorcunov@openvz.org>
LKML-Reference: <4A998CCA.1040407@kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
  • Loading branch information
Yinghai Lu authored and Ingo Molnar committed Sep 4, 2009
1 parent 5a925b4 commit 0d96b9f
Showing 1 changed file with 4 additions and 1 deletion.
5 changes: 4 additions & 1 deletion arch/x86/kernel/cpu/amd.c
Original file line number Diff line number Diff line change
Expand Up @@ -336,7 +336,7 @@ static void __cpuinit srat_detect_node(struct cpuinfo_x86 *c)
#if defined(CONFIG_NUMA) && defined(CONFIG_X86_64)
int cpu = smp_processor_id();
int node;
unsigned apicid = cpu_has_apic ? hard_smp_processor_id() : c->apicid;
unsigned apicid = c->apicid;

node = per_cpu(cpu_llc_id, cpu);

Expand Down Expand Up @@ -481,6 +481,9 @@ static void __cpuinit init_amd(struct cpuinfo_x86 *c)
}
if (c->x86 == 0x10 || c->x86 == 0x11)
set_cpu_cap(c, X86_FEATURE_REP_GOOD);

/* get apicid instead of initial apic id from cpuid */
c->apicid = hard_smp_processor_id();
#else

/*
Expand Down

0 comments on commit 0d96b9f

Please sign in to comment.