[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [PATCH] xen/arm: disable interrupts on return_to_hypervisor
On Wed, 2012-12-05 at 18:37 +0000, Stefano Stabellini wrote: > At the moment it is possible to reach return_to_hypervisor with > interrupts enabled (it happens all the times when we are actually going > back to hypervisor mode, when we don't take the return_to_guest path). > > If that happens we risk loosing the content of ELR_hyp: if we receive an > interrupt right after restoring ELR_hyp, once we come back we'll have a > different value in ELR_hyp and the original is lost. > > In order to make the return_to_hypervisor path safe, we disable > interrupts before restoring any registers. > > Signed-off-by: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx> Acked + applied, thanks. _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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