Revision 89d62be9
| ID | 89d62be9f4fb538db7f919a2be7df2544ffc02c5 |
virtio-pci: don't poll masked vectors
At the moment, when irqfd is in use but a vector is masked,
qemu will poll it and handle vector masks in userspace.
Since almost no one ever looks at the pending bits,
it is better to defer this until pending bits
are actually read.
Implement this optimization using the new poll notifier.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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