Re: [Qemu-devel] [PATCH 0/3] VFIO-based PCI device assignment for QEMU 1.2

[Alex Williamson <alex.williamson@redhat.com>]

On Mon, 2012-08-13 at 20:48 +0000, Blue Swirl wrote:
> On Mon, Aug 13, 2012 at 7:33 PM, Anthony Liguori <aliguori@us.ibm.com> wrote:
> > Alex Williamson <alex.williamson@redhat.com> writes:
> >
> >> On Mon, 2012-08-13 at 08:27 -0500, Anthony Liguori wrote:
> >>> Alex Williamson <alex.williamson@redhat.com> writes:
> >>>
> >>> > VFIO kernel support was just merged into Linux, so I'd like to
> >>> > formally propose inclusion of the QEMU vfio-pci driver for
> >>> > QEMU 1.2.  Included here is support for x86 PCI device assignment.
> >>> > PCI INTx is not yet enabled, but devices making use of either MSI
> >>> > or MSI-X work.  The level irqfd and eoifd support I've proposed
> >>> > for KVM enable an accelerated patch for this through KVM.  I'd
> >>> > like to get this base driver in first and enable the remaining
> >>> > support in-tree.
> >>> >
> >>> > I've split this version up a little from the RFC to make it a bit
> >>> > easier to review.  Review comments from Blue Swirl and Avi are
> >>> > already incorporated, including Avi's requests to simplify both
> >>> > the PCI BAR mapping and unmapping paths.
> >>>
> >>> Hi Alex,
> >>>
> >>> Thanks for pushing this forward!  Hopefully this will finally kill off
> >>> qemu-kvm.git for good.
> >>>
> >>> I think this series is going to have to wait for 1.3 to open up.  We
> >>> have a very short release window for this release and I'd feel a lot
> >>> more comfortable having such a significant feature spend some time in
> >>> the development cycle getting testing/review.
> >>>
> >>> I'd like to see a few Reviewed-by's too for this series before it goes
> >>> in.  I expect they won't be hard to get but I also expect it will take a
> >>> few more revisions of this series to get there.
> >>
> >> That's disappointing, but I can understand your reluctance.  Blue Swirl
> >> reviewed the RFC and could perhaps add a Reviewed-by.  Alexey has been
> >> working on the POWER port and I'm sure could provide a Reviewed-by.  We
> >> also have a few early adopters that are already making use of this code.
> >> Towards accepting it, the driver is entirely self contained, there's
> >> really no risk to the rest of qemu.  The only missing functionality is
> >> legacy interrupt support.  Perhaps there's a compromise where this
> >> driver could be considered a tech preview in 1.2 (x-vfio-pci?).
> >> Thanks,
> >
> > Yeah, if a few people were willing to at least give an Acked-by by
> > Wednesday, I'd be okay taking this in a "preview" or something like
> > that.
> 
> Acked-by: Blue Swirl <blauwirbel@gmail.com>

Thank you!  :)