Re: [Qemu-devel] [PATCH 00/11] virtio migration: simplify vmstate helper

[Dr. David Alan Gilbert]

* Paolo Bonzini (address@hidden) wrote:
> 
> 
> On 30/09/2016 16:19, Halil Pasic wrote:
> > As a part of the long term  effort to convert migration to vmstate the
> > migration of virtio devices was recently partially switched to vmstate
> > starting with the outer layer (commit 5943124cc "virtio: Migration
> > helper function and macro" and the subsequent "virtio-*: Wrap in
> > vmstate" commits). This was done by introducing a vmstate based wrapper
> > driving the well know virtio migration process. As this transition is
> > still in progress, some synergies were left unexploited, and some things
> > can be expressed in a more vmstatish way.
> 
> Another useful thing to do is to move code out of virtio_load and into a
> post_load callback of vmstate_virtio.

Yes, and I'm hoping that we'll be able to get more of virtio_load/virtio_save
into normal macros within the vmstate_virtio eventually.

So other than the minor issues Paolo suggested on the macro:

Reviewed-by: Dr. David Alan Gilbert <address@hidden>

Dave

> 
> Paolo
> 
> > Let us simplify a couple of things and get rid of some code duplication.
> > 
> > Did only a couple of smoke tests. Comprehensive testing is still to be done.
> > 
> > Halil Pasic (11):
> >   virtio: add VIRTIO_DEF_DEVICE_VMSD macro
> >   virtio-blk: convert to VIRTIO_DEF_DEVICE_VMSD
> >   virtio-net: convert to VIRTIO_DEF_DEVICE_VMSD
> >   virtio-9p: convert to VIRTIO_DEF_DEVICE_VMSD
> >   virtio-serial: convert to VIRTIO_DEF_DEVICE_VMSD
> >   virtio-gpu: do not use VMSTATE_VIRTIO_DEVICE
> >   virtio-input: convert to VIRTIO_DEF_DEVICE_VMSD
> >   virtio-scsi: convert to VIRTIO_DEF_DEVICE_VMSD
> >   virtio-balloon: convert to VIRTIO_DEF_DEVICE_VMSD
> >   virtio-rng: convert to VIRTIO_DEF_DEVICE_VMSD
> >   virtio: remove unused VMSTATE_VIRTIO_DEVICE
> > 
> >  hw/9pfs/virtio-9p-device.c  |  7 +------
> >  hw/block/virtio-blk.c       | 17 +----------------
> >  hw/char/virtio-serial-bus.c |  8 +-------
> >  hw/display/virtio-gpu.c     | 39 +++++++++++++++++++++++++++------------
> >  hw/input/virtio-input.c     | 13 +++----------
> >  hw/net/virtio-net.c         | 32 +++++++++++---------------------
> >  hw/scsi/virtio-scsi.c       | 18 +-----------------
> >  hw/virtio/virtio-balloon.c  |  7 +------
> >  hw/virtio/virtio-rng.c      | 10 ++--------
> >  hw/virtio/virtio.c          | 11 ++++++++++-
> >  include/hw/virtio/virtio.h  | 31 ++++++++++++++++++-------------
> >  11 files changed, 76 insertions(+), 117 deletions(-)
> > 
> 
--
Dr. David Alan Gilbert / address@hidden / Manchester, UK