| commit | 4f8a62a933a79094e44bc1b16b63bb23e62d67b4 | |
| author | Peter Xu <peterx@redhat.com> | |
| Fri, 18 May 2018 07:25:12 +0000 (18 15:25 +0800) | ||
| committer | Michael S. Tsirkin <mst@redhat.com> | |
| Wed, 23 May 2018 14:33:57 +0000 (23 17:33 +0300) | ||
| tree | 4b1488663090cc8f14e65e57b380a91395b8bdff | treesnapshot (tar.gz zip) |
| parent | 1d9efa73e12ddf361ea997c2d532cc4afa6674d1 | commitdiff |
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>
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>
| hw/i386/intel_iommu.c | diffblobblamehistory | |
| include/hw/i386/intel_iommu.h | diffblobblamehistory |