Re: [PATCH v14 00/22] Add Mediated device support

From: Alex Williamson
Date: Fri Nov 18 2016 - 10:40:28 EST

On Fri, 18 Nov 2016 17:16:32 +0800
Zhenyu Wang <zhenyuw@xxxxxxxxxxxxxxx> wrote:

> On 2016.11.17 16:51:45 -0700, Alex Williamson wrote:
> > On Thu, 17 Nov 2016 23:29:38 +0000
> > "Tian, Kevin" <kevin.tian@xxxxxxxxx> wrote:
> >
> > > > From: Alex Williamson [mailto:alex.williamson@xxxxxxxxxx]
> > > > Sent: Friday, November 18, 2016 5:25 AM
> > > >
> > > > On Thu, 17 Nov 2016 02:16:12 +0530
> > > > Kirti Wankhede <kwankhede@xxxxxxxxxx> wrote:
> > > > >
> > > > > Documentation/ABI/testing/sysfs-bus-vfio-mdev | 111 ++
> > > > > Documentation/vfio-mediated-device.txt | 399 +++++++
> > > > > MAINTAINERS | 9 +
> > > > > drivers/vfio/Kconfig | 1 +
> > > > > drivers/vfio/Makefile | 1 +
> > > > > drivers/vfio/mdev/Kconfig | 17 +
> > > > > drivers/vfio/mdev/Makefile | 5 +
> > > > > drivers/vfio/mdev/mdev_core.c | 385 +++++++
> > > > > drivers/vfio/mdev/mdev_driver.c | 119 ++
> > > > > drivers/vfio/mdev/mdev_private.h | 41 +
> > > > > drivers/vfio/mdev/mdev_sysfs.c | 286 +++++
> > > > > drivers/vfio/mdev/vfio_mdev.c | 180 +++
> > > > > drivers/vfio/pci/vfio_pci.c | 83 +-
> > > > > drivers/vfio/platform/vfio_platform_common.c | 31 +-
> > > > > drivers/vfio/vfio.c | 340 +++++-
> > > > > drivers/vfio/vfio_iommu_type1.c | 872 +++++++++++---
> > > > > include/linux/mdev.h | 177 +++
> > > > > include/linux/vfio.h | 32 +-
> > > > > include/uapi/linux/vfio.h | 10 +
> > > > > samples/vfio-mdev/Makefile | 13 +
> > > > > samples/vfio-mdev/mtty.c | 1503
> > > > +++++++++++++++++++++++++
> > > > > 21 files changed, 4358 insertions(+), 257 deletions(-)
> > > > > create mode 100644 Documentation/ABI/testing/sysfs-bus-vfio-mdev
> > > > > create mode 100644 Documentation/vfio-mediated-device.txt
> > > > > create mode 100644 drivers/vfio/mdev/Kconfig
> > > > > create mode 100644 drivers/vfio/mdev/Makefile
> > > > > create mode 100644 drivers/vfio/mdev/mdev_core.c
> > > > > create mode 100644 drivers/vfio/mdev/mdev_driver.c
> > > > > create mode 100644 drivers/vfio/mdev/mdev_private.h
> > > > > create mode 100644 drivers/vfio/mdev/mdev_sysfs.c
> > > > > create mode 100644 drivers/vfio/mdev/vfio_mdev.c
> > > > > create mode 100644 include/linux/mdev.h
> > > > > create mode 100644 samples/vfio-mdev/Makefile
> > > > > create mode 100644 samples/vfio-mdev/mtty.c
> > > >
> > > > As discussed, I dropped patch 12, updated the documentation, and added
> > > > 'retries' initialization. This is now applied to my next branch for
> > > > v4.10. Thanks to the reviewers and Kirti and Neo for your hard work!
> > > > Thanks,
> > > >
> > >
> > > That's a great news! Alex, do you have an idea when this series may
> > > hit linux-next? :-)
> >
> > Whenever there's a new build, hopefully within the next 24hrs, but I
> > don't really know the schedule. Thanks,
> >
>
> Alex, could you do a pull request of mdev for Daniel's drm-intel tree?
> We need to send KVMGT mdev support pull base on that.

No, this is not how I intend or prefer to merge this. This is a large
change for vfio and it is not exclusive to KVMGT. We have linux-next
to facilitate handling dependencies between subsystems during
development and a two week merge window to allow managing how these
changes enter the mainline tree. If I were to have this pulled into
drm-intel it ties my hands as to how I can manage changes within my
functional area. I want these two weeks of linux-next exposure for
vetting the changes and resolving any remaining issues. I'm not going
to compromise my ability to react to such issues. linux-next inclusion
should be sufficient for you to coordinate through the drm tree, though
Daniel will need to be made aware of the dependency. I will however
plan to send my pull request to Linus early in the merge window to
accommodate dependent changes also being included for v4.10. Hope
you understand, thanks,

Alex