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[Qemu-devel] [PATCH v4 0/4] *** Introduce a new vhost-user-blk host devi
From: |
Changpeng Liu |
Subject: |
[Qemu-devel] [PATCH v4 0/4] *** Introduce a new vhost-user-blk host device to Qemu *** |
Date: |
Thu, 19 Oct 2017 13:24:06 +0800 |
Although virtio scsi specification was designed as a replacement for virtio_blk,
there are still many users using virtio_blk. Qemu 2.9 introduced a new device
vhost user scsi which can process I/O in user space for virtio_scsi, this commit
introduces a new vhost user block host device, which can support virtio_blk in
Guest OS, and I/O processing in another I/O target.
Due to the limitation for virtio_blk specification, virtio_blk device cannot get
block information such as capacity, block size etc via the specification,
several
new vhost user messages were added to deliver virtio config space
information between Qemu and I/O target,
VHOST_USER_GET_CONFIG/VHOST_USER_SET_CONFIG
messages used for get/set config space from/to I/O target,
VHOST_USER_SET_CONFIG_FD
was added for event notifier in case the change of virtio config space. Also,
those
messages can be used for vhost device live migration as well.
v3-v4: refactoring the vhost user block example patch based on new
libvhost-user library.
v2-v3: add new vhost user message to get/set virtio config space
Changpeng Liu (4):
vhost-user: add new vhost user messages to support virtio config space
vhost-user-blk: introduce a new vhost-user-blk host device
contrib/libvhost-user: enable virtio config space messages
contrib/vhost-user-blk: introduce a vhost-user-blk sample application
.gitignore | 1 +
Makefile | 3 +
Makefile.objs | 1 +
configure | 11 +
contrib/libvhost-user/libvhost-user.c | 75 +++++
contrib/libvhost-user/libvhost-user.h | 15 +-
contrib/vhost-user-blk/Makefile.objs | 1 +
contrib/vhost-user-blk/vhost-user-blk.c | 492 ++++++++++++++++++++++++++++++++
docs/interop/vhost-user.txt | 33 +++
hw/block/Makefile.objs | 3 +
hw/block/vhost-user-blk.c | 360 +++++++++++++++++++++++
hw/virtio/vhost-user.c | 97 +++++++
hw/virtio/vhost.c | 63 ++++
hw/virtio/virtio-pci.c | 55 ++++
hw/virtio/virtio-pci.h | 18 ++
include/hw/virtio/vhost-backend.h | 8 +
include/hw/virtio/vhost-user-blk.h | 40 +++
include/hw/virtio/vhost.h | 16 ++
18 files changed, 1291 insertions(+), 1 deletion(-)
create mode 100644 contrib/vhost-user-blk/Makefile.objs
create mode 100644 contrib/vhost-user-blk/vhost-user-blk.c
create mode 100644 hw/block/vhost-user-blk.c
create mode 100644 include/hw/virtio/vhost-user-blk.h
--
1.9.3
- [Qemu-devel] [PATCH v4 0/4] *** Introduce a new vhost-user-blk host device to Qemu ***,
Changpeng Liu <=
- [Qemu-devel] [PATCH v4 1/4] vhost-user: add new vhost user messages to support virtio config space, Changpeng Liu, 2017/10/19
- Re: [Qemu-devel] [PATCH v4 1/4] vhost-user: add new vhost user messages to support virtio config space, Paolo Bonzini, 2017/10/19
- Re: [Qemu-devel] [PATCH v4 1/4] vhost-user: add new vhost user messages to support virtio config space, Stefan Hajnoczi, 2017/10/19
- Re: [Qemu-devel] [PATCH v4 1/4] vhost-user: add new vhost user messages to support virtio config space, Michael S. Tsirkin, 2017/10/19
- Re: [Qemu-devel] [PATCH v4 1/4] vhost-user: add new vhost user messages to support virtio config space, Stefan Hajnoczi, 2017/10/20
- Re: [Qemu-devel] [PATCH v4 1/4] vhost-user: add new vhost user messages to support virtio config space, Liu, Changpeng, 2017/10/23
- Re: [Qemu-devel] [PATCH v4 1/4] vhost-user: add new vhost user messages to support virtio config space, Stefan Hajnoczi, 2017/10/23
- Re: [Qemu-devel] [PATCH v4 1/4] vhost-user: add new vhost user messages to support virtio config space, Liu, Changpeng, 2017/10/23
- Re: [Qemu-devel] [PATCH v4 1/4] vhost-user: add new vhost user messages to support virtio config space, Stefan Hajnoczi, 2017/10/24
Re: [Qemu-devel] [PATCH v4 1/4] vhost-user: add new vhost user messages to support virtio config space, Michael S. Tsirkin, 2017/10/19