From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:37518) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1WtwbC-00007p-Ks for qemu-devel@nongnu.org; Mon, 09 Jun 2014 06:14:47 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Wtwb7-0004bb-68 for qemu-devel@nongnu.org; Mon, 09 Jun 2014 06:14:42 -0400 Received: from mail-qg0-f66.google.com ([209.85.192.66]:56785) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Wtwb6-0004b6-Vt for qemu-devel@nongnu.org; Mon, 09 Jun 2014 06:14:37 -0400 Received: by mail-qg0-f66.google.com with SMTP id f51so3107862qge.5 for ; Mon, 09 Jun 2014 03:14:36 -0700 (PDT) MIME-Version: 1.0 In-Reply-To: <20140608151201.GD5704@redhat.com> References: <20140527120050.15172.94908.stgit@3820> <20140608151201.GD5704@redhat.com> From: Nikolay Nikolaev Date: Mon, 9 Jun 2014 13:14:15 +0300 Message-ID: Content-Type: multipart/alternative; boundary=001a11c30e226d602204fb647a51 Subject: Re: [Qemu-devel] [snabb-devel] Re: [PATCH v10 00/18] Vhost and vhost-net support for userspace based backends List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: "snabb-devel@googlegroups.com" Cc: Antonios Motakis , Luke Gorrie , VirtualOpenSystems Technical Team , qemu-devel --001a11c30e226d602204fb647a51 Content-Type: text/plain; charset=UTF-8 Hello Michael, On Sun, Jun 8, 2014 at 6:12 PM, Michael S. Tsirkin wrote: > On Tue, May 27, 2014 at 03:03:21PM +0300, Nikolay Nikolaev wrote: > > In this patch series we would like to introduce our approach for putting > a > > virtio-net backend in an external userspace process. Our eventual target > is to > > run the network backend in the Snabbswitch ethernet switch, while > receiving > > traffic from a guest inside QEMU/KVM which runs an unmodified virtio-net > > implementation. > > > > For this, we are working into extending vhost to allow equivalent > functionality > > for userspace. Vhost already passes control of the data plane of > virtio-net to > > the host kernel; we want to realize a similar model, but for userspace. > > > > In this patch series the concept of a vhost-backend is introduced. > > > > We define two vhost backend types - vhost-kernel and vhost-user. The > former is > > the interface to the current kernel module implementation. Its control > plane is > > ioctl based. The data plane is realized by the kernel directly accessing > the > > QEMU allocated, guest memory. > > > > In the new vhost-user backend, the control plane is based on > communication > > between QEMU and another userspace process using a unix domain socket. > This > > allows to implement a virtio backend for a guest running in QEMU, inside > the > > other userspace process. For this communication we use a chardev with a > Unix > > domain socket backend. Vhost-user is client/server agnostic regarding the > > chardev, however it does not support the 'nowait' and 'telnet' options. > > > > We rely on the memdev with a memory-file backend. The backend's share=on > option > > should be used. HugeTLBFS is required for this option to work. > > > > The data path is realized by directly accessing the vrings and the > buffer data > > off the guest's memory. > > > > The current user of vhost-user is only vhost-net. We add a new netdev > backend > > that is intended to initialize vhost-net with vhost-user backend. > > > > Example usage: > > > > qemu -m 512 \ > > -object memory-file,id=mem,size=512M,mem-path=/hugetlbfs,share=on \ > > -numa node,memdev=mem \ > > -chardev socket,id=chr0,path=/path/to/socket \ > > -netdev type=vhost-user,id=net0,chardev=chr0 \ > > -device virtio-net-pci,netdev=net0 > > > > On non-MSIX guests the vhost feature can be forced using a special > option: > > > > ... > > -netdev type=vhost-user,id=net0,chardev=chr0,vhostforce > > ... > > > > In order to use ioeventfds, kvm should be enabled. > > > > The work is made on top of the NUMA patch series v3.2 > > http://lists.gnu.org/archive/html/qemu-devel/2014-05/msg02706.html > > > > This code can be pulled from git@github.com:virtualopensystems/qemu.git > vhost-user-v10 > > A simple functional test is available in tests/vhost-user-test.c > > > > A reference vhost-user slave for testing is also available from > git@github.com:virtualopensystems/vapp.git > > I put patches 1-14 and 17 on my tree, branch vhost: > git://git.kernel.org/pub/scm/virt/kvm/mst/qemu.git vhost > Thanks for that! > please rebase 15,16 and 18 on top, addressing comments that were sent > for 15 and 16 - I'll fix the comments. For 18, I don't see any, but it is a test and it depends on NUMA patches. So we'll have to fix it eventually. > since, and post just these, then I'll be able to merge the > feature. > > Thanks! > > > > Changes from v9: > > - Rebased on the NUMA memdev patchseries and reworked to use memdev > > memdev is now merged though not the numa bits. > will still work right? > > The feature depends on memory sharing. We're currently using this line to enable it: -object memory-file,id=mem,size=512M,mem-path=/hugetlbfs,share=on \ -numa node,memdev=mem \ This does not seem to work in your tree. Please advice what equivalent should be used? regards, Nikolay Nikolaev > > - Removed -mem-path refactoring > > - Removed all reconnection code > > - Fixed 100% CPU usage in the G_IO_HUP handler after disconnect > > - Reworked vhost feature bits handling so vhost-user has better control > in the negotiation > > > > Changes from v8: > > - Removed prealloc property from the -mem-path refactoring > > - Added and use new function - kvm_eventfds_enabled > > - Add virtio_queue_get_avail_idx used in vhost_virtqueue_stop to > > get a sane value in case of VHOST_GET_VRING_BASE failure > > - vhost user uses kvm_eventfds_enabled to check whether the ioeventfd > > capability of KVM is available > > - Added flag VHOST_USER_VRING_NOFD_MASK to be set when KICK, CALL or > ERR file > > descriptor is invalid or ioeventfd is not available > > > > Changes from v7: > > - Slave reconnection when using chardev in server mode > > - qtest vhost-user-test added > > - New qemu_chr_fe_get_msgfds for reading multiple fds from the chardev > > - Mandatory features in vhost_dev, used on reconnect to verify for > conflicts > > - Add vhostforce parameter to -netdev vhost-user (for non-MSIX guests) > > - Extend libqemustub.a to support qemu-char.c > > > > Changes from v6: > > - Remove the 'unlink' property of '-mem-path' > > - Extend qemu-char: blocking read, send fds, monitor for connection > close > > - Vhost-user uses chardev as a backend > > - Poll and reconnect removed (no VHOST_USER_ECHO). > > - Disconnect is deteced by the chardev (G_IO_HUP event) > > - vhost-backend.c split to vhost-user.c > > > > Changes from v5: > > - Split -mem-path unlink option to a separate patch > > - Fds are passed only in the ancillary data > > - Stricter message size checks on receive/send > > - Netdev vhost-user now includes path and poll_time options > > - The connection probing interval is configurable > > > > Changes from v4: > > - Use error_report for errors > > - VhostUserMsg has new field `size` indicating the following payload > length. > > Field `flags` now has version and reply bits. The structure is packed. > > - Send data is of variable length (`size` field in message) > > - Receive in 2 steps, header and payload > > - Add new message type VHOST_USER_ECHO, to check connection status > > > > Changes from v3: > > - Convert -mem-path to QemuOpts with prealloc, share and unlink > properties > > - Set 1 sec timeout when read/write to the unix domain socket > > - Fix file descriptor leak > > > > Changes from v2: > > - Reconnect when the backend disappears > > > > Changes from v1: > > - Implementation of vhost-user netdev backend > > - Code improvements > > > > > > --- > > > > Nikolay Nikolaev (18): > > Add kvm_eventfds_enabled function > > Add chardev API qemu_chr_fe_read_all > > Add chardev API qemu_chr_fe_set_msgfds > > Add chardev API qemu_chr_fe_get_msgfds > > Add G_IO_HUP handler for socket chardev > > vhost: add vhost_get_features and vhost_ack_features > > vhost_net should call the poll callback only when it is set > > Refactor virtio-net to use generic get_vhost_net > > vhost_net_init will use VhostNetOptions to get all its arguments > > Add vhost_ops to vhost_dev struct and replace all relevant ioctls > > Add vhost-backend and VhostBackendType > > Add vhost-user as a vhost backend. > > vhost-net: vhost-user feature bits support > > Add new vhost-user netdev backend > > Add the vhost-user netdev backend to the command line > > Add vhost-user protocol documentation > > libqemustub: add stubs to be able to use qemu-char.c > > Add qtest for vhost-user > > > > > > docs/specs/vhost-user.txt | 261 ++++++++++++++++++++++++++++ > > hmp-commands.hx | 4 > > hw/net/vhost_net.c | 228 +++++++++++++++++-------- > > hw/net/virtio-net.c | 29 +-- > > hw/scsi/vhost-scsi.c | 45 +++-- > > hw/virtio/Makefile.objs | 2 > > hw/virtio/vhost-backend.c | 71 ++++++++ > > hw/virtio/vhost-user.c | 342 > +++++++++++++++++++++++++++++++++++++ > > hw/virtio/vhost.c | 82 ++++++--- > > include/hw/virtio/vhost-backend.h | 38 ++++ > > include/hw/virtio/vhost.h | 13 + > > include/net/vhost-user.h | 17 ++ > > include/net/vhost_net.h | 11 + > > include/sysemu/char.h | 44 +++++ > > include/sysemu/kvm.h | 11 + > > kvm-all.c | 4 > > kvm-stub.c | 1 > > net/Makefile.objs | 2 > > net/clients.h | 3 > > net/hub.c | 1 > > net/net.c | 25 ++- > > net/tap.c | 18 ++ > > net/vhost-user.c | 265 +++++++++++++++++++++++++++++ > > qapi-schema.json | 19 ++ > > qemu-char.c | 277 +++++++++++++++++++++++++++--- > > qemu-options.hx | 18 ++ > > stubs/Makefile.objs | 8 + > > stubs/bdrv-commit-all.c | 7 + > > stubs/chr-msmouse.c | 7 + > > stubs/get-next-serial.c | 3 > > stubs/is-daemonized.c | 7 + > > stubs/machine-init-done.c | 6 + > > stubs/monitor-init.c | 6 + > > stubs/notify-event.c | 6 + > > stubs/vc-init.c | 7 + > > tests/Makefile | 4 > > tests/vhost-user-test.c | 312 > ++++++++++++++++++++++++++++++++++ > > 37 files changed, 2011 insertions(+), 193 deletions(-) > > create mode 100644 docs/specs/vhost-user.txt > > create mode 100644 hw/virtio/vhost-backend.c > > create mode 100644 hw/virtio/vhost-user.c > > create mode 100644 include/hw/virtio/vhost-backend.h > > create mode 100644 include/net/vhost-user.h > > create mode 100644 net/vhost-user.c > > create mode 100644 stubs/bdrv-commit-all.c > > create mode 100644 stubs/chr-msmouse.c > > create mode 100644 stubs/get-next-serial.c > > create mode 100644 stubs/is-daemonized.c > > create mode 100644 stubs/machine-init-done.c > > create mode 100644 stubs/monitor-init.c > > create mode 100644 stubs/notify-event.c > > create mode 100644 stubs/vc-init.c > > create mode 100644 tests/vhost-user-test.c > > > > -- > > Signature > > -- > You received this message because you are subscribed to the Google Groups > "Snabb Switch development" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to snabb-devel+unsubscribe@googlegroups.com. > To post to this group, send an email to snabb-devel@googlegroups.com. > Visit this group at http://groups.google.com/group/snabb-devel. > --001a11c30e226d602204fb647a51 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable
Hello Michael,


On Sun, Jun 8, 2014 at 6:12 PM, Michael S. Tsirkin <mst= @redhat.com> wrote:
On Tue, May 27, 2014= at 03:03:21PM +0300, Nikolay Nikolaev wrote:
> In this patch series we would like to introduce our ap= proach for putting a
> virtio-net backend in an external userspace process. Our eventual targ= et is to
> run the network backend in the Snabbswitch ethernet switch, while rece= iving
> traffic from a guest inside QEMU/KVM which runs an unmodified virtio-n= et
> implementation.
>
> For this, we are working into extending vhost to allow equivalent func= tionality
> for userspace. Vhost already passes control of the data plane of virti= o-net to
> the host kernel; we want to realize a similar model, but for userspace= .
>
> In this patch series the concept of a vhost-backend is introduced.
>
> We define two vhost backend types - vhost-kernel and vhost-user. The f= ormer is
> the interface to the current kernel module implementation. Its control= plane is
> ioctl based. The data plane is realized by the kernel directly accessi= ng the
> QEMU allocated, guest memory.
>
> In the new vhost-user backend, the control plane is based on communica= tion
> between QEMU and another userspace process using a unix domain socket.= This
> allows to implement a virtio backend for a guest running in QEMU, insi= de the
> other userspace process. For this communication we use a chardev with = a Unix
> domain socket backend. Vhost-user is client/server agnostic regarding = the
> chardev, however it does not support the 'nowait' and 'tel= net' options.
>
> We rely on the memdev with a memory-file backend. The backend's sh= are=3Don option
> should be used. HugeTLBFS is required for this option to work.
>
> The data path is realized by directly accessing the vrings and the buf= fer data
> off the guest's memory.
>
> The current user of vhost-user is only vhost-net. We add a new netdev = backend
> that is intended to initialize vhost-net with vhost-user backend.
>
> Example usage:
>
> qemu -m 512 \
> =C2=A0 =C2=A0 =C2=A0-object memory-file,id=3Dmem,size=3D512M,mem-path= =3D/hugetlbfs,share=3Don \
> =C2=A0 =C2=A0 =C2=A0-numa node,memdev=3Dmem \
> =C2=A0 =C2=A0 =C2=A0-chardev socket,id=3Dchr0,path=3D/path/to/socket \=
> =C2=A0 =C2=A0 =C2=A0-netdev type=3Dvhost-user,id=3Dnet0,chardev=3Dchr0= \
> =C2=A0 =C2=A0 =C2=A0-device virtio-net-pci,netdev=3Dnet0
>
> On non-MSIX guests the vhost feature can be forced using a special opt= ion:
>
> ...
> =C2=A0 =C2=A0 =C2=A0-netdev type=3Dvhost-user,id=3Dnet0,chardev=3Dchr0= ,vhostforce
> ...
>
> In order to use ioeventfds, kvm should be enabled.
>
> The work is made on top of the NUMA patch series v3.2
> http://lists.gnu.org/archive/html/qemu-devel/201= 4-05/msg02706.html
>
> This code can be pulled from git@github.com:virtualopensystems/qemu.gi= t vhost-user-v10
> A simple functional test is available in tests/vhost-user-test.c
>
> A reference vhost-user slave for testing is also available from git@gi= thub.com:virtualopensystems/vapp.git

I put patches 1-14 and 17 on my tree, branch vhost:
=C2=A0 =C2=A0 git://git.kernel.org/pub/scm/virt/kvm/mst/qemu.git= vhost

Thanks for that!
=C2=A0
please rebase 15,16 and 18 on top, addressing comments that were sent
for 15 and 16 - I'll fix the comments. For 18, I don= 9;t see any, but it is a test and it depends on NUMA patches. So we'll = have to fix it eventually.
=C2=A0
since, and post just these, then I'll be able to merge the
feature.

Thanks!


> Changes from v9:
> =C2=A0- Rebased on the NUMA memdev patchseries and reworked to use mem= dev

memdev is now merged though not the numa bits.
will still work right?


The feature depe= nds on memory sharing. We're currently using this line to enable it:
=C2=A0 =C2=A0=C2=A0 -object memory-file,id=3Dmem,size=3D512M,mem-path= =3D/hugetlbfs,share=3Don \
=C2=A0 =C2=A0=C2=A0 -numa node,memdev=3Dmem \

This does= not seem to work in your tree. Please advice what equivalent should be use= d?

regards,
Nikolay Nikolaev
= =C2=A0
> =C2=A0- Removed -mem-path refactoring
> =C2=A0- Removed all reconnection code
> =C2=A0- Fixed 100% CPU usage in the G_IO_HUP handler after disconnect<= br> > =C2=A0- Reworked vhost feature bits handling so vhost-user has better = control in the negotiation
>
> Changes from v8:
> =C2=A0- Removed prealloc property from the -mem-path refactoring
> =C2=A0- Added and use new function - kvm_eventfds_enabled
> =C2=A0- Add virtio_queue_get_avail_idx used in vhost_virtqueue_stop to=
> =C2=A0 =C2=A0get a sane value in case of VHOST_GET_VRING_BASE failure<= br> > =C2=A0- vhost user uses kvm_eventfds_enabled to check whether the ioev= entfd
> =C2=A0 =C2=A0capability of KVM is available
> =C2=A0- Added flag VHOST_USER_VRING_NOFD_MASK to be set when KICK, CAL= L or ERR file
> =C2=A0 =C2=A0descriptor is invalid or ioeventfd is not available
>
> Changes from v7:
> =C2=A0- Slave reconnection when using chardev in server mode
> =C2=A0- qtest vhost-user-test added
> =C2=A0- New qemu_chr_fe_get_msgfds for reading multiple fds from the c= hardev
> =C2=A0- Mandatory features in vhost_dev, used on reconnect to verify f= or conflicts
> =C2=A0- Add vhostforce parameter to -netdev vhost-user (for non-MSIX g= uests)
> =C2=A0- Extend libqemustub.a to support qemu-char.c
>
> Changes from v6:
> =C2=A0- Remove the 'unlink' property of '-mem-path' > =C2=A0- Extend qemu-char: blocking read, send fds, monitor for connect= ion close
> =C2=A0- Vhost-user uses chardev as a backend
> =C2=A0- Poll and reconnect removed (no VHOST_USER_ECHO).
> =C2=A0- Disconnect is deteced by the chardev (G_IO_HUP event)
> =C2=A0- vhost-backend.c split to vhost-user.c
>
> Changes from v5:
> =C2=A0- Split -mem-path unlink option to a separate patch
> =C2=A0- Fds are passed only in the ancillary data
> =C2=A0- Stricter message size checks on receive/send
> =C2=A0- Netdev vhost-user now includes path and poll_time options
> =C2=A0- The connection probing interval is configurable
>
> Changes from v4:
> =C2=A0- Use error_report for errors
> =C2=A0- VhostUserMsg has new field `size` indicating the following pay= load length.
> =C2=A0 =C2=A0Field `flags` now has version and reply bits. The structu= re is packed.
> =C2=A0- Send data is of variable length (`size` field in message)
> =C2=A0- Receive in 2 steps, header and payload
> =C2=A0- Add new message type VHOST_USER_ECHO, to check connection stat= us
>
> Changes from v3:
> =C2=A0- Convert -mem-path to QemuOpts with prealloc, share and unlink = properties
> =C2=A0- Set 1 sec timeout when read/write to the unix domain socket > =C2=A0- Fix file descriptor leak
>
> Changes from v2:
> =C2=A0- Reconnect when the backend disappears
>
> Changes from v1:
> =C2=A0- Implementation of vhost-user netdev backend
> =C2=A0- Code improvements
>
>
> ---
>
> Nikolay Nikolaev (18):
> =C2=A0 =C2=A0 =C2=A0 Add kvm_eventfds_enabled function
> =C2=A0 =C2=A0 =C2=A0 Add chardev API qemu_chr_fe_read_all
> =C2=A0 =C2=A0 =C2=A0 Add chardev API qemu_chr_fe_set_msgfds
> =C2=A0 =C2=A0 =C2=A0 Add chardev API qemu_chr_fe_get_msgfds
> =C2=A0 =C2=A0 =C2=A0 Add G_IO_HUP handler for socket chardev
> =C2=A0 =C2=A0 =C2=A0 vhost: add vhost_get_features and vhost_ack_featu= res
> =C2=A0 =C2=A0 =C2=A0 vhost_net should call the poll callback only when= it is set
> =C2=A0 =C2=A0 =C2=A0 Refactor virtio-net to use generic get_vhost_net<= br> > =C2=A0 =C2=A0 =C2=A0 vhost_net_init will use VhostNetOptions to get al= l its arguments
> =C2=A0 =C2=A0 =C2=A0 Add vhost_ops to vhost_dev struct and replace all= relevant ioctls
> =C2=A0 =C2=A0 =C2=A0 Add vhost-backend and VhostBackendType
> =C2=A0 =C2=A0 =C2=A0 Add vhost-user as a vhost backend.
> =C2=A0 =C2=A0 =C2=A0 vhost-net: vhost-user feature bits support
> =C2=A0 =C2=A0 =C2=A0 Add new vhost-user netdev backend
> =C2=A0 =C2=A0 =C2=A0 Add the vhost-user netdev backend to the command = line
> =C2=A0 =C2=A0 =C2=A0 Add vhost-user protocol documentation
> =C2=A0 =C2=A0 =C2=A0 libqemustub: add stubs to be able to use qemu-cha= r.c
> =C2=A0 =C2=A0 =C2=A0 Add qtest for vhost-user
>
>
> =C2=A0docs/specs/vhost-user.txt =C2=A0 =C2=A0 =C2=A0 =C2=A0 | =C2=A026= 1 ++++++++++++++++++++++++++++
> =C2=A0hmp-commands.hx =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0= =C2=A0 =C2=A0 | =C2=A0 =C2=A04
> =C2=A0hw/net/vhost_net.c =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0 =C2=A0| =C2=A0228 +++++++++++++++++--------
> =C2=A0hw/net/virtio-net.c =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 = =C2=A0 | =C2=A0 29 +--
> =C2=A0hw/scsi/vhost-scsi.c =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 = =C2=A0| =C2=A0 45 +++--
> =C2=A0hw/virtio/Makefile.objs =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 | =C2= =A0 =C2=A02
> =C2=A0hw/virtio/vhost-backend.c =C2=A0 =C2=A0 =C2=A0 =C2=A0 | =C2=A0 7= 1 ++++++++
> =C2=A0hw/virtio/vhost-user.c =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0= | =C2=A0342 +++++++++++++++++++++++++++++++++++++
> =C2=A0hw/virtio/vhost.c =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0 =C2=A0 | =C2=A0 82 ++++++---
> =C2=A0include/hw/virtio/vhost-backend.h | =C2=A0 38 ++++
> =C2=A0include/hw/virtio/vhost.h =C2=A0 =C2=A0 =C2=A0 =C2=A0 | =C2=A0 1= 3 +
> =C2=A0include/net/vhost-user.h =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0| =C2= =A0 17 ++
> =C2=A0include/net/vhost_net.h =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 | =C2= =A0 11 +
> =C2=A0include/sysemu/char.h =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 = | =C2=A0 44 +++++
> =C2=A0include/sysemu/kvm.h =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 = =C2=A0| =C2=A0 11 +
> =C2=A0kvm-all.c =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 | =C2=A0 =C2=A04
> =C2=A0kvm-stub.c =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0| =C2=A0 =C2=A01
> =C2=A0net/Makefile.objs =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0 =C2=A0 | =C2=A0 =C2=A02
> =C2=A0net/clients.h =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 | =C2=A0 =C2=A03
> =C2=A0net/hub.c =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 | =C2=A0 =C2=A01
> =C2=A0net/net.c =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 | =C2=A0 25 ++-
> =C2=A0net/tap.c =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 | =C2=A0 18 ++
> =C2=A0net/vhost-user.c =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0 =C2=A0 =C2=A0| =C2=A0265 +++++++++++++++++++++++++++++
> =C2=A0qapi-schema.json =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0 =C2=A0 =C2=A0| =C2=A0 19 ++
> =C2=A0qemu-char.c =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0 =C2=A0 =C2=A0 =C2=A0 | =C2=A0277 +++++++++++++++++++++++++++---
> =C2=A0qemu-options.hx =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0= =C2=A0 =C2=A0 | =C2=A0 18 ++
> =C2=A0stubs/Makefile.objs =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 = =C2=A0 | =C2=A0 =C2=A08 +
> =C2=A0stubs/bdrv-commit-all.c =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 | =C2= =A0 =C2=A07 +
> =C2=A0stubs/chr-msmouse.c =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 = =C2=A0 | =C2=A0 =C2=A07 +
> =C2=A0stubs/get-next-serial.c =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 | =C2= =A0 =C2=A03
> =C2=A0stubs/is-daemonized.c =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 = | =C2=A0 =C2=A07 +
> =C2=A0stubs/machine-init-done.c =C2=A0 =C2=A0 =C2=A0 =C2=A0 | =C2=A0 = =C2=A06 +
> =C2=A0stubs/monitor-init.c =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 = =C2=A0| =C2=A0 =C2=A06 +
> =C2=A0stubs/notify-event.c =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 = =C2=A0| =C2=A0 =C2=A06 +
> =C2=A0stubs/vc-init.c =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0= =C2=A0 =C2=A0 | =C2=A0 =C2=A07 +
> =C2=A0tests/Makefile =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0| =C2=A0 =C2=A04
> =C2=A0tests/vhost-user-test.c =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 | =C2= =A0312 ++++++++++++++++++++++++++++++++++
> =C2=A037 files changed, 2011 insertions(+), 193 deletions(-)
> =C2=A0create mode 100644 docs/specs/vhost-user.txt
> =C2=A0create mode 100644 hw/virtio/vhost-backend.c
> =C2=A0create mode 100644 hw/virtio/vhost-user.c
> =C2=A0create mode 100644 include/hw/virtio/vhost-backend.h
> =C2=A0create mode 100644 include/net/vhost-user.h
> =C2=A0create mode 100644 net/vhost-user.c
> =C2=A0create mode 100644 stubs/bdrv-commit-all.c
> =C2=A0create mode 100644 stubs/chr-msmouse.c
> =C2=A0create mode 100644 stubs/get-next-serial.c
> =C2=A0create mode 100644 stubs/is-daemonized.c
> =C2=A0create mode 100644 stubs/machine-init-done.c
> =C2=A0create mode 100644 stubs/monitor-init.c
> =C2=A0create mode 100644 stubs/notify-event.c
> =C2=A0create mode 100644 stubs/vc-init.c
> =C2=A0create mode 100644 tests/vhost-user-test.c
>
> --
> Signature

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