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

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Message-ID: <20260205142111.GK2328995@ziepe.ca>
Date: Thu, 5 Feb 2026 10:21:11 -0400
From: Jason Gunthorpe <jgg@...pe.ca>
To: Leon Romanovsky <leon@...nel.org>
Cc: Christian König <christian.koenig@....com>,
	Alex Williamson <alex@...zbot.org>, Simona Vetter <simona@...ll.ch>,
	Jani Nikula <jani.nikula@...el.com>,
	Lucas De Marchi <lucas.demarchi@...el.com>,
	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>,
	Thomas Hellström <thomas.hellstrom@...ux.intel.com>,
	Rodrigo Vivi <rodrigo.vivi@...el.com>,
	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 Thu, Feb 05, 2026 at 02:19:45PM +0200, Leon Romanovsky wrote:
> You don't need any backmerge, SHA-1 version of vfio-v6.19-rc8 tag is the
> same as in Linus's tree, so the flow is:

I'm confused what is the problem here?

>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@...persky.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.

Jason