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xen-devel
[Xen-devel] Re: [PATCH] xen: disable interrupts before saving in percpu
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?
Thanks,
J
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