linux-kernel - Re: [PATCH v7 7/8] vfio: Permit VFIO to work with pinned importers

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Message-ID: <ac33ad1a-330c-4ab5-bb98-4a4dedccf0da@amd.com>
Date: Thu, 5 Feb 2026 10:43:08 +0100
From: Christian König <christian.koenig@....com>
To: Alex Williamson <alex@...zbot.org>, Simona Vetter <simona@...ll.ch>,
 Jani Nikula <jani.nikula@...el.com>,
 Lucas De Marchi <lucas.demarchi@...el.com>
Cc: Leon Romanovsky <leon@...nel.org>, Sumit Semwal
 <sumit.semwal@...aro.org>, Alex Deucher <alexander.deucher@....com>,
 David Airlie <airlied@...il.com>, Gerd Hoffmann <kraxel@...hat.com>,
 Dmitry Osipenko <dmitry.osipenko@...labora.com>,
 Gurchetan Singh <gurchetansingh@...omium.org>, Chia-I Wu
 <olvaffe@...il.com>, Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
 Maxime Ripard <mripard@...nel.org>, Thomas Zimmermann <tzimmermann@...e.de>,
 Lucas De Marchi <lucas.demarchi@...el.com>,
 Thomas Hellström <thomas.hellstrom@...ux.intel.com>,
 Rodrigo Vivi <rodrigo.vivi@...el.com>, Jason Gunthorpe <jgg@...pe.ca>,
 Kevin Tian <kevin.tian@...el.com>, Joerg Roedel <joro@...tes.org>,
 Will Deacon <will@...nel.org>, Robin Murphy <robin.murphy@....com>,
 Felix Kuehling <Felix.Kuehling@....com>, Ankit Agrawal <ankita@...dia.com>,
 Vivek Kasireddy <vivek.kasireddy@...el.com>, linux-media@...r.kernel.org,
 dri-devel@...ts.freedesktop.org, linaro-mm-sig@...ts.linaro.org,
 linux-kernel@...r.kernel.org, amd-gfx@...ts.freedesktop.org,
 virtualization@...ts.linux.dev, intel-xe@...ts.freedesktop.org,
 linux-rdma@...r.kernel.org, iommu@...ts.linux.dev, kvm@...r.kernel.org
Subject: Re: [PATCH v7 7/8] vfio: Permit VFIO to work with pinned importers

On 2/4/26 17:56, Alex Williamson wrote:
...
>>
>> This chunk here doesn't want to apply to drm-misc-next, my educated
>> guess is that the patch adding those lines is missing in that tree.
>>
>> How should we handle that? Patches 1-3 have already been pushed to
>> drm-misc-next and I would rather like to push patches 4-6 through
>> that branch as well.
>>
>> I can request a backmerge from the drm-misc-next maintainers, but
>> then we clearly don't get that upstream this week.
> 
> Hmm, drm-next already has a backmerge up to v6.19-rc7, the patch here is
> based on a commit merged in rc8.  The tag for that change was based on
> rc6.  It can be found here:
> 
> https://github.com/awilliam/linux-vfio.git tags/vfio-v6.19-rc8
> 
> As the same tag Linus merged in:
> 
> 1f97d9dcf536 ("Merge tag 'vfio-v6.19-rc8' of https://github.com/awilliam/linux-vfio")
> 
> drm-misc-next only seems to be based on v6.19-rc1 though, so I don't
> know that any of that helps.  Thanks,

Thanks Alex, that was indeed helpful.

Simona, Jani and Lucas can we do a backmerge of 6.19-rc8 into drm-misc-next or does that completely breaks the flow?

If it's not possible immediately then I will do the merge next week or so when the final 6.19 is out and everything merged back into the drm-misc trees.

Leon the flow of patches through the DRM subsystem is documented here: https://drm.pages.freedesktop.org/maintainer-tools/repositories/drm-misc.html#merge-timeline

Thanks,
Christian.

> 
> Alex