| commit | 1cdd2ee54a61ed288e56bd57a649ec50a5a88e8b | |
| author | Vincenzo Maffione <v.maffione@gmail.com> | |
| Sun, 31 Jan 2016 10:29:06 +0000 (31 11:29 +0100) | ||
| committer | Michael S. Tsirkin <mst@redhat.com> | |
| Sat, 6 Feb 2016 18:44:08 +0000 (6 20:44 +0200) | ||
| tree | 85f503768e3e57783637645c86cc2f3197ad6981 | treesnapshot (tar.gz zip) |
| parent | be1fea9bc286f64c6c995bb0d7145a0b738aeddb | commitdiff |
virtio: combine write of an entry into used ring
Fill in an element of the used ring with a single combined access to the
guest physical memory, rather than using two separated accesses.
This reduces the overhead due to expensive address translation.
Signed-off-by: Vincenzo Maffione <v.maffione@gmail.com>
Message-Id: <e4a89a767a4a92cbb6bcc551e151487eb36e1722.1450218353.git.v.maffione@gmail.com>
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Fill in an element of the used ring with a single combined access to the
guest physical memory, rather than using two separated accesses.
This reduces the overhead due to expensive address translation.
Signed-off-by: Vincenzo Maffione <v.maffione@gmail.com>
Message-Id: <e4a89a767a4a92cbb6bcc551e151487eb36e1722.1450218353.git.v.maffione@gmail.com>
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
| hw/virtio/virtio.c | diffblobblamehistory |