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Re: [Qemu-devel] [PATCH v5 00/21] vhost-user: add migration support
From: |
Michael S. Tsirkin |
Subject: |
Re: [Qemu-devel] [PATCH v5 00/21] vhost-user: add migration support |
Date: |
Tue, 29 Sep 2015 18:07:43 +0300 |
On Thu, Sep 24, 2015 at 06:22:00PM +0200, address@hidden wrote:
> From: Marc-André Lureau <address@hidden>
>
> Hi,
>
> The following series implement shareable log for vhost-user to support
> memory tracking during live migration. On qemu-side, the solution is
> fairly straightfoward since vhost already supports the dirty log, only
> vhost-user couldn't access the log memory until then.
>
> The series includes "protocol feature negotiation" series proposed
> earlier by Michael S. Tsirkinm and "vhost user: Add live migration"
> series from Thibaut Collet .
So I dropped everything except the 1st patch from my tree
since there were too many failures.
> v4->v5:
> - rebase on top of last Michael S. Tsirkin PULL request
> - block live migration if !PROTOCOL_F_LOG_SHMFD
> - wait for a reply after SET_LOG_BASE
> - split vhost_set_log_base from the rest of vhost_call refactoring
> - use a seperate global vhost_log_shm
>
> v3->v4:
> - add the proto negotiation & the migration series
> - replace the varargs vhost_call() approach for callbacks
> - only share-allocate when the backend needs it
>
> v2->v3:
> - changed some patch summary
> - added migration tests
> - added a patch to replace error message with a trace
>
> The development branch I used is:
> https://github.com/elmarco/qemu branch "vhost-user"
>
> Marc-André Lureau (18):
> configure: probe for memfd
> util: add linux-only memfd fallback
> util: add memfd helpers
> vhost: alloc shareable log
> vhost: document log resizing
> vhost: add vhost_set_log_base op
> vhost-user: send log shm fd along with log_base
> vhost-user: add a migration blocker
> vhost: use a function for each call
> vhost: only use shared log if in use by backend
> vhost-user: document migration log
> net: add trace_vhost_user_event
> vhost-user-test: move wait_for_fds() out
> vhost-user-test: remove useless static check
> vhost-user-test: wrap server in TestServer struct
> vhost-user-test: learn to tweak various qemu arguments
> vhost-user-test: add live-migration test
> vhost-user-test: check ownership during migration
>
> Michael S. Tsirkin (1):
> vhost-user: unit test for new messages
>
> Thibaut Collet (2):
> vhost user: add support of live migration
> vhost user: add rarp sending after live migration for legacy guest
>
> configure | 19 ++
> docs/specs/vhost-user.txt | 63 ++++-
> hw/net/vhost_net.c | 35 ++-
> hw/scsi/vhost-scsi.c | 7 +-
> hw/virtio/vhost-backend.c | 121 +++++++-
> hw/virtio/vhost-user.c | 571
> ++++++++++++++++++++++++--------------
> hw/virtio/vhost.c | 101 ++++---
> include/hw/virtio/vhost-backend.h | 77 ++++-
> include/hw/virtio/vhost.h | 15 +-
> include/net/vhost_net.h | 1 +
> include/qemu/memfd.h | 24 ++
> net/vhost-user.c | 34 ++-
> tests/vhost-user-test.c | 390 ++++++++++++++++++++++----
> trace-events | 3 +
> util/Makefile.objs | 2 +-
> util/memfd.c | 126 +++++++++
> 16 files changed, 1260 insertions(+), 329 deletions(-)
> create mode 100644 include/qemu/memfd.h
> create mode 100644 util/memfd.c
>
> --
> 2.4.3
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