Re: [PATCH] xen: disable interrupts before saving in percpu

[H. Peter Anvin]

Jeremy Fitzhardinge wrote:
> H. Peter Anvin wrote:
>> Jeremy Fitzhardinge wrote:
>>  
>>> xen_mc_batch has a small preempt race where it takes the address of a
>>> percpu variable immediately before disabling interrupts, thereby
>>> leaving a small window in which we may migrate to another cpu and save
>>> the flags in the wrong percpu variable.  Disable interrupts before
>>> saving the old flags in a percpu.
>>>     
>>
>> Applied to tip:core/xen, thanks!
> 
> Can you push this Linusward too?
> 

Just merged into tip:core/urgent, so it should end up in the next set of
pull requests.

	-hpa
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