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| author | Michael S. Tsirkin <mst@redhat.com> | 2011-05-20 03:10:44 +0400 |
|---|---|---|
| committer | Rusty Russell <rusty@rustcorp.com.au> | 2011-05-30 05:44:15 +0400 |
| commit | a5c262c5fd83ece01bd649fb08416c501d4c59d7 (patch) | |
| tree | 295ddc61d59236b6521f5587e2e78ccb8da5d97a /drivers/vhost | |
| parent | bf7035bf20563a6cadcb9e870406e7b21daf5e30 (diff) | |
| download | linux-a5c262c5fd83ece01bd649fb08416c501d4c59d7.tar.xz | |
virtio_ring: support event idx feature
Support for the new event idx feature:
1. When enabling interrupts, publish the current avail index
value to the host to get interrupts on the next update.
2. Use the new avail_event feature to reduce the number
of exits from the guest.
Simple test with the simulator:
[virtio]# time ./virtio_test
spurious wakeus: 0x7
real 0m0.169s
user 0m0.140s
sys 0m0.019s
[virtio]# time ./virtio_test --no-event-idx
spurious wakeus: 0x11
real 0m0.649s
user 0m0.295s
sys 0m0.335s
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Diffstat (limited to 'drivers/vhost')
0 files changed, 0 insertions, 0 deletions