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

[hidehiro.kawai.ez@xxxxxxxxxxx (Hidehiro Kawai)]

(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().

Regards,
-- 
Hidehiro Kawai
Hitachi, Ltd. Research & Development Group