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| author | Yinghai Lu <yhlu.kernel@gmail.com> | 2008-03-06 01:11:11 -0800 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-04-17 17:40:57 +0200 |
| commit | a7062211865efb53cda253d6e33a106f0fe20ebe (patch) | |
| tree | ad3384e1304ebe8de4e5caa2fee20fb843d8ff61 /arch/x86/kernel/setup_64.c | |
| parent | 97b44ae6cd8117212d41bedc433b5571ee3b79d9 (diff) | |
| download | blackbird-op-linux-a7062211865efb53cda253d6e33a106f0fe20ebe.tar.gz blackbird-op-linux-a7062211865efb53cda253d6e33a106f0fe20ebe.zip | |
x86: fix amd_detect_cmp
for system with apicid lifting, boot cpu apicid will be 4
got:
CPU: L1 I Cache: 64K (64 bytes/line), D cache 64K (64 bytes/line)
CPU: L2 Cache: 512K (64 bytes/line)
CPU 0/4 -> Node 0
CPU: Physical Processor ID: 1
CPU: Processor Core ID: 0
so try to offset apicid back before get phys_proc_id with bits shift.
then we can get correct socket ID
also remove remove cpu_data(0) reference.
because cpu_data(0) only be ready after smp_prepare_cpus with the assignment
from boot_cpu_data to current_cpu_data aka cpu_data(0).
and check_bugs()==>identify_cpu(&boot_cpu_data) is quite before than
smp_prepare_cpus. So just use boot_cpu_id instead.
Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/kernel/setup_64.c')
| -rw-r--r-- | arch/x86/kernel/setup_64.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/x86/kernel/setup_64.c b/arch/x86/kernel/setup_64.c index d65b73e63384..f303c70dd688 100644 --- a/arch/x86/kernel/setup_64.c +++ b/arch/x86/kernel/setup_64.c @@ -564,7 +564,7 @@ static void __cpuinit amd_detect_cmp(struct cpuinfo_x86 *c) /* Low order bits define the core id (index of core in socket) */ c->cpu_core_id = c->phys_proc_id & ((1 << bits)-1); /* Convert the APIC ID into the socket ID */ - c->phys_proc_id = phys_pkg_id(bits); + c->phys_proc_id = (c->apicid - boot_cpu_id) >> bits; #ifdef CONFIG_NUMA node = c->phys_proc_id; @@ -581,7 +581,7 @@ static void __cpuinit amd_detect_cmp(struct cpuinfo_x86 *c) If that doesn't result in a usable node fall back to the path for the previous case. */ - int ht_nodeid = apicid - (cpu_data(0).phys_proc_id << bits); + int ht_nodeid = apicid - boot_cpu_id; if (ht_nodeid >= 0 && apicid_to_node[ht_nodeid] != NUMA_NO_NODE) |
