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x86: Add x86_init platform override to fix up NUMA core numbering

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Add an x86_init vector for handling inconsistent core numbering.
This is useful for multi-fabric platforms, such as Numascale
NumaConnect.

v2:
 - use struct x86_cpuinit_ops
 - provide default fall-back function to warn

Signed-off-by: Daniel J Blueman <daniel@numascale-asia.com>
Cc: Steffen Persvold <sp@numascale.com>
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
Link: http://lkml.kernel.org/r/1323073238-32686-2-git-send-email-daniel@numascale-asia.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Daniel J Blueman
2011-12-05 16:20:37 +08:00
committed by Ingo Molnar
parent 9a0ebfbe3f
commit 64be4c1c24
4 changed files with 20 additions and 0 deletions
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7
arch/x86/kernel/cpu/amd.c
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@@ -353,6 +353,13 @@ static void __cpuinit srat_detect_node(struct cpuinfo_x86 *c)
if (node == NUMA_NO_NODE)
node = per_cpu(cpu_llc_id, cpu);
/*
* If core numbers are inconsistent, it's likely a multi-fabric platform,
* so invoke platform-specific handler
*/
if (c->phys_proc_id != node)
x86_cpuinit.fixup_cpu_id(c, node);
if (!node_online(node)) {
/*
* Two possibilities here: