Re: [Qemu-devel] [PATCH v5 0/4] Introduce vhost-user-scsi and sample application

["Michael S. Tsirkin" <mst@redhat.com>]

On Fri, Apr 21, 2017 at 02:53:33PM +0000, Felipe Franciosi wrote:
> 
> > On 2 Mar 2017, at 21:47, Michael S. Tsirkin <mst@redhat.com> wrote:
> > 
> > On Thu, Mar 02, 2017 at 10:25:49AM -0800, Felipe Franciosi wrote:
> >> Based on various discussions on the 2016 KVM Forum, I'm sending over a
> >> vhost-user-scsi implementation for your consideration.
> >> 
> >> This patchset introduces a new vhost-user SCSI device. While heavily
> >> based on vhost-scsi, it is implemented using vhost's userspace
> >> counterpart. The device has been coded and tested to work with live
> >> migration.
> >> 
> >> As part of this work, a new vhost-scsi-common device was created and
> >> the existing vhost-scsi device moved underneath it. The new
> >> vhost-user-scsi device is also placed underneath it.
> >> 
> >> A sample application based on the newly introduced libvhost-user is
> >> also included. It makes use of libiscsi for simplicity.
> >> 
> >> For convenience, I'm maintaining an up-to-date version of these
> >> patches (including some necessary fixes for libvhost-user) on:
> >> 
> >> https://github.com/franciozzy/qemu/tree/vus-upstream-v5
> >> 
> >> See the individual patches for build and use instructions.
> >> 
> >> Signed-off-by: Felipe Franciosi <felipe@nutanix.com>
> > 
> > BTW, pls remember to ping after QEMU release.
> 
> Ping! :-)
> 
> F.

Now that code is upstream, I think the next step would be
to add vIOMMU support based on what we are doing for virtio-net,
so people can use SPDK within guest with security. Do you think
you will have the time to look at it?


> > 
> >> v4 -> v5:
> >> - Add a patch to fix a build issue with libvhost-user.
> >> 
> >> v3 -> v4:
> >> - Drop configure switches and build vus by default.
> >> - Add sample application to .gitignore.
> >> - Removed a whitespace error.
> >> - Rebase on master.
> >> 
> >> v2 -> v3:
> >> - Rebase after vhost notifier fixes by Paolo.
> >> - Exposed F_HOTPLUG and F_CHANGE on vhost-user-scsi.
> >> 
> >> v1 -> v2:
> >> - Introduce new vhost-scsi-common device type.
> >> - Move vhost-scsi device underneath vhost-scsi-common.
> >> - Move sample application from tests/ to contrib/.
> >> - Make sample application use the glib event loop.
> >> - Minor fixes.
> >> 
> >> Felipe Franciosi (4):
> >>  libvhost-user: replace vasprintf() to fix build
> >>  vhost-scsi: create a vhost-scsi-common abstraction
> >>  vus: Introduce vhost-user-scsi host device
> >>  vus: Introduce a vhost-user-scsi sample application
> >> 
> >> .gitignore                                |   1 +
> >> Makefile                                  |   3 +
> >> Makefile.objs                             |   4 +
> >> configure                                 |   1 +
> >> contrib/libvhost-user/libvhost-user.c     |   2 +-
> >> contrib/vhost-user-scsi/Makefile.objs     |   1 +
> >> contrib/vhost-user-scsi/vhost-user-scsi.c | 886 ++++++++++++++++++++++++++++++
> >> default-configs/pci.mak                   |   1 +
> >> hw/scsi/Makefile.objs                     |   3 +-
> >> hw/scsi/vhost-scsi-common.c               | 143 +++++
> >> hw/scsi/vhost-scsi.c                      | 194 ++-----
> >> hw/scsi/vhost-user-scsi.c                 | 215 ++++++++
> >> hw/virtio/virtio-pci.c                    |  54 ++
> >> hw/virtio/virtio-pci.h                    |  11 +
> >> include/hw/virtio/vhost-scsi-common.h     |  48 ++
> >> include/hw/virtio/vhost-scsi.h            |  11 +-
> >> include/hw/virtio/vhost-user-scsi.h       |  35 ++
> >> include/hw/virtio/virtio-scsi.h           |   5 +
> >> 18 files changed, 1469 insertions(+), 149 deletions(-)
> >> create mode 100644 contrib/vhost-user-scsi/Makefile.objs
> >> create mode 100644 contrib/vhost-user-scsi/vhost-user-scsi.c
> >> create mode 100644 hw/scsi/vhost-scsi-common.c
> >> create mode 100644 hw/scsi/vhost-user-scsi.c
> >> create mode 100644 include/hw/virtio/vhost-scsi-common.h
> >> create mode 100644 include/hw/virtio/vhost-user-scsi.h
> >> 
> >> -- 
> >> 1.9.4