Peter Xu 4f8a62a933 intel-iommu: only do page walk for MAP notifiers
For UNMAP-only IOMMU notifiers, we don't need to walk the page tables.
Fasten that procedure by skipping the page table walk.  That should
boost performance for UNMAP-only notifiers like vhost.

CC: QEMU Stable <qemu-stable@nongnu.org>
Signed-off-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2018-05-23 17:33:57 +03:00
..
2018-03-07 08:30:28 +13:00
2018-05-15 10:04:22 +01:00
2018-03-27 10:17:45 -05:00
2018-04-27 11:36:34 +02:00
2017-02-28 20:47:50 +01:00