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

From: Daniel Vetter
Subject: Re: [Qemu-devel] [PATCH v14 00/22] Add Mediated device support
Date: Fri, 18 Nov 2016 17:09:59 +0100

On Fri, Nov 18, 2016 at 4:40 PM, Alex Williamson
<address@hidden> wrote:
>> 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,

My understanding was that the mdev changes are needed to be able to
apply the kvmgt stuff, and otherwise it won't build. For that I need a
stable git tag&pull request (can be specific topic branch, which means
subsystems can land in any order, or the full subsystem tree, which
means depencies need to be tracked correctly). I am not going to
resolve that in the merge window, since in drm we want everything
lined up _before_ that opens (the feature cutoff is this w/e, but
there's some wiggle room ofc).

Sounds like there's just not enough time to line all the things up in
time for 4.10, and the i915/kmvgt stuff needs to be postponed to 4.11.
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch

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