xemu/include/hw/virtio
Stefano Garzarella 37b06f8d46 virtio-blk: add DISCARD and WRITE_ZEROES features
This patch adds the support of DISCARD and WRITE_ZEROES commands,
that have been introduced in the virtio-blk protocol to have
better performance when using SSD backend.

We support only one segment per request since multiple segments
are not widely used and there are no userspace APIs that allow
applications to submit multiple segments in a single call.

Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Stefano Garzarella <sgarzare@redhat.com>
Message-id: 20190221103314.58500-7-sgarzare@redhat.com
Message-Id: <20190221103314.58500-7-sgarzare@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2019-02-22 09:42:17 +00:00
..
vhost-backend.h vhost: allow backends to filter memory sections 2018-05-24 21:14:10 +03:00
vhost-scsi-common.h vhost-user-scsi: move host_features into VHostSCSICommon 2018-08-23 18:46:25 +02:00
vhost-scsi.h vhost-scsi: create a vhost-scsi-common abstraction 2017-05-05 12:10:00 +02:00
vhost-user-blk.h vhost-blk: turn on pre-defined RO feature bit 2018-06-01 19:20:38 +03:00
vhost-user-scsi.h vhost-user-scsi: move host_features into VHostSCSICommon 2018-08-23 18:46:25 +02:00
vhost-user.h vhost-user: support registering external host notifiers 2018-05-24 21:14:11 +03:00
vhost-vsock.h vhost-vsock: add virtio sockets device 2016-09-10 00:28:08 +03:00
vhost.h vhost: Clean out old vhost_set_memory and friends 2018-02-08 21:06:40 +02:00
virtio-access.h hw: Do not include "exec/address-spaces.h" if it is not necessary 2018-06-01 14:15:10 +02:00
virtio-balloon.h trivial: Do not include pci.h if it is not necessary 2018-05-20 08:40:00 +03:00
virtio-blk.h virtio-blk: add DISCARD and WRITE_ZEROES features 2019-02-22 09:42:17 +00:00
virtio-bus.h virtio: support setting memory region based host notifier 2018-05-23 17:01:54 +03:00
virtio-crypto.h cryptodev: add vhost support 2018-03-01 18:26:17 +02:00
virtio-gpu.h virtio-gpu: pass down VirtIOGPU pointer to a bunch of functions 2018-09-03 08:31:50 +02:00
virtio-input.h virtio-input: send rel-wheel events for wheel buttons 2017-09-29 10:36:33 +02:00
virtio-net.h virtio-net: Fix a typo 2019-01-24 13:34:20 +01:00
virtio-rng.h virtio-rng: stop virtqueue while the CPU is stopped 2017-04-21 12:25:40 +02:00
virtio-scsi.h virtio-scsi: Add virtqueue_size parameter allowing virtqueue size to be set. 2017-09-19 14:09:11 +02:00
virtio-serial.h virtio-serial: add enable_backend callback 2017-09-21 11:51:49 +02:00
virtio.h virtio-net: make VirtIOFeature usable for other virtio devices 2019-02-22 09:42:16 +00:00