Messages in this thread | | | Date | Tue, 03 Feb 2009 17:23:16 -0800 | From | "H. Peter Anvin" <> | Subject | Re: [PATCH] xen: disable interrupts before saving in percpu |
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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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