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由 Michael S. Tsirkin 提交于
kvm didn't clear irqfd counter on deassign, as a result we could get a spurious interrupt when irqfd is assigned back. this leads to poor performance and, in theory, guest crash. Signed-off-by: NMichael S. Tsirkin <mst@redhat.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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