On Thu, Feb 05, 2026 at 07:41:11AM -0700, Alex Williamson wrote:
> >> From https://anongit.freedesktop.org/git/drm/drm-misc
> >> * branch drm-misc-next -> FETCH_HEAD
> >>
> >> $ git show FETCH_HEAD
> >> commit 779ec12c85c9e4547519e3903a371a3b26a289de
> >> Author: Alexander Konyukhov <Alexander.Konyukhov(a)kaspersky.com>
> >> Date: Tue Feb 3 16:48:46 2026 +0300
> >>
> >> drm/komeda: fix integer overflow in AFBC framebuffer size check
> >>
> >> $ git merge-base FETCH_HEAD 61ceaf236115f20f4fdd7cf60f883ada1063349a
> >> 24d479d26b25bce5faea3ddd9fa8f3a6c3129ea7
> >> $ git describe --contains 24d479d26b25bce5faea3ddd9fa8f3a6c3129ea7
> >> v6.19-rc6^0
> >>
> >> $ git log --oneline 61ceaf236115f20f4fdd7cf60f883ada1063349a ^FETCH_HEAD
> >> 61ceaf236115f2 vfio: Prevent from pinned DMABUF importers to attach to VFIO DMABUF
> >>
> >> Just pull Alex's tree, the drm-misc-next tree already has v6.19-rc6,
> >> so all they will see is one extra patch from Alex in your PR.
> >>
> >> No need to backmerge, this is normal git stuff and there won't be
> >> conflicts when they merge a later Linus tag.
> >
> > Correct, but that would merge the same patch through two different
> > trees. That is usually a pretty big no-go.
>
> Applying the patch through two different trees is a no-go, but
> merging the same commit from a shared branch or tag is very common
> and acceptable. It's the same commit after all, there is no
> conflict, no duplicate commit. When the trees are merged, the
> commit will exist once in the log. Thanks,
+1
This is how shared branches work. There is no issue here.
Jason
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.ht…
Thanks,
Christian.
>
> Alex
On Sun, 01 Feb 2026 16:34:03 +0200, Edward Srouji wrote:
> This patch series introduces dma-buf export support for RDMA/InfiniBand
> devices, enabling userspace applications to export RDMA PCI-backed
> memory regions (such as device memory or mlx5 UAR pages) as dma-buf file
> descriptors.
>
> This allows PCI device memory to be shared with other kernel subsystems
> (e.g., graphics or media) or between userspace processes, via the
> standard dma-buf interface, avoiding unnecessary copies and enabling
> efficient peer-to-peer (P2P) DMA transfers. See [1] for background on
> dma-buf.
>
> [...]
Applied, thanks!
[1/3] RDMA/uverbs: Support external FD uobjects
https://git.kernel.org/rdma/rdma/c/6b848074a32078
[2/3] RDMA/uverbs: Add DMABUF object type and operations
https://git.kernel.org/rdma/rdma/c/e6738fe6cad448
[3/3] RDMA/mlx5: Implement DMABUF export ops
https://git.kernel.org/rdma/rdma/c/992a14bb2150a1
Best regards,
--
Leon Romanovsky <leon(a)kernel.org>
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