x86-64, NUMA: Don't call __pa() with invalid address in numa_reset_distance()

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Do not call __pa(numa_distance) if it was not allocated before.
Calling with invalid address triggers VIRTUAL_BUG_ON() in
__phys_addr() if CONFIG_DEBUG_VIRTUAL.

Also reported by Ingo.

 http://thread.gmane.org/gmane.linux.kernel/1101306/focus=1101785

- v2: Change to check existing path as tj requested.
- tj: Description update.

Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Tejun Heo <tj@kernel.org>
Reported-by: Ingo Molnar <mingo@elte.hu>

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Yinghai Lu 2011-02-17 14:46:37 +01:00 • committed by Tejun Heo

parent e23bba6044

commit 2ca230baeb

1 changed files with 6 additions and 4 deletions

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arch/x86/mm/numa_64.c

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