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| author | Xiong Zhang <xiong.y.zhang@intel.corp-partner.google.com> | 2020-01-02 18:17:43 +0800 |
|---|---|---|
| committer | Commit Bot <commit-bot@chromium.org> | 2020-03-05 09:03:33 +0000 |
| commit | 2f7dabbd6a0d8620e4b19b92cdae24c08e4c7ccc (patch) | |
| tree | 122c4d7f3d9bf97de7f9208f74912a077fe09415 /src/linux.rs | |
| parent | db4c70d2151d054b6b4df58be432e500aeafecbe (diff) | |
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Virtio: Add blk VIRTIO_RING_F_EVENT_IDX feature
Previous interrupt suppress patch only supply crude interrupt suppress, VIRTIO_RING_F_EVENT_IDX feature supply a more performant alternative: 1) where the driver specifies how far the device can progress before a notification is required 2) where the device specifies how far the driver can progress before a interrrupt is required. This patch add this feature into blk. For gpu and network, this could be added also, but gpu and network performance don't get better. BUG=None TEST=run benchmark for blk in guest Change-Id: I73fe3f8b72a9e88fd6073890bc6ab2bee891d51d Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosvm/+/2008341 Reviewed-by: Daniel Verkamp <dverkamp@chromium.org> Tested-by: kokoro <noreply+kokoro@google.com> Commit-Queue: Xiong Zhang <xiong.y.zhang@intel.corp-partner.google.com>
Diffstat (limited to 'src/linux.rs')
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