KVM: PPC: Book3s: PR: Disable preemption in vcpu_run
When entering the guest, we want to make sure we're not getting preempted away, so let's disable preemption on entry, but enable it again while handling guest exits. Reported-by: Jörg Sommer <joerg@alea.gnuu.de> Signed-off-by: Alexander Graf <agraf@suse.de> Signed-off-by: Avi Kivity <avi@redhat.com>
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