KVM: PPC: Book3S: PR: Fix signal check race

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As Scott put it:

> If we get a signal after the check, we want to be sure that we don't
> receive the reschedule IPI until after we're in the guest, so that it
> will cause another signal check.

we need to have interrupts disabled from the point we do signal_check()
all the way until we actually enter the guest.

This patch fixes potential signal loss races.

Reported-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Avi Kivity <avi@redhat.com>

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Alexander Graf 2011-12-19 13:36:55 +01:00 • committed by Avi Kivity

parent ae21216bec

commit e371f713db

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arch/powerpc/kvm/book3s_pr.c

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