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

[H. Peter Anvin]

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!

	-hpa
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