[PATCH 1/3] x86/panic: Fix re-entrance problem due to panic on NMI

Hidehiro Kawai hidehiro.kawai.ez at hitachi.com
Thu Jul 23 02:43:20 PDT 2015

(2015/07/23 17:15), Peter Zijlstra wrote:
> On Wed, Jul 22, 2015 at 11:14:21AM +0900, Hidehiro Kawai wrote:
>> +DEFINE_SPINLOCK(panic_lock);
> At the very least this should be a raw spinlock, but wth aren't you
> using a simple atomic_xchg() ?

Thanks for the comment.

I just followed the current panic_lock implementation.
Using atomic_xchg() may be OK.  I'll try another version
with atomic_xchg().

Hidehiro Kawai
Hitachi, Ltd. Research & Development Group

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