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authorAvi Kivity <avi@redhat.com>2010-12-02 18:52:50 +0300
committerAvi Kivity <avi@redhat.com>2011-01-12 12:30:18 +0300
commitb7c4145ba2eb0717db0ddac1b5f7f48012189c53 (patch)
tree9b259970f56451ecb0f5d84ecd81d67386f63224 /net
parent4cc703100b1fd97c71804e2fa5c9c377c5b37dc5 (diff)
downloadlinux-b7c4145ba2eb0717db0ddac1b5f7f48012189c53.tar.xz
KVM: Don't spin on virt instruction faults during reboot
Since vmx blocks INIT signals, we disable virtualization extensions during reboot. This leads to virtualization instructions faulting; we trap these faults and spin while the reboot continues. Unfortunately spinning on a non-preemptible kernel may block a task that reboot depends on; this causes the reboot to hang. Fix by skipping over the instruction and hoping for the best. Signed-off-by: Avi Kivity <avi@redhat.com>
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