Subject: [PATCH] ARM: KVM: fix unbalancedget_cpu() in access_dcsw

From: [email-masked] (Marc Zyngier)
Date: Fri, 12 Apr 2013 21:17:46 +0200

On Fri, 12 Apr 2013 19:13:32 +0100, Will Deacon <[email-masked]>
wrote:
> On Fri, Apr 12, 2013 at 06:13:48PM +0100, Marc Zyngier wrote:
>> In the very unlikely event where a guest would be foolish enough to
>> *read* from a write-only cache maintainance register, we end up
>> with preemption disabled, due to a misplaced get_cpu().
>> 
>> Just move the "is_write" test outside of the critical section.
>> 
>> Signed-off-by: Marc Zyngier <[email-masked]>
> 
> I found it second time around!
> 
>   Reported-by: Will Deacon <[email-masked]>

Indeed you did! :-)

I'll add that to the commit, and on a couple of other as well...

        M.
-- 
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