From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 6D35DEE20AB for ; Fri, 6 Feb 2026 14:23:02 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 182BB10E7D7; Fri, 6 Feb 2026 14:23:00 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; secure) header.d=ziepe.ca header.i=@ziepe.ca header.b="Gb0wZeMu"; dkim-atps=neutral Received: from mail-qv1-f68.google.com (mail-qv1-f68.google.com [209.85.219.68]) by gabe.freedesktop.org (Postfix) with ESMTPS id 6622410E8F4 for ; Thu, 5 Feb 2026 14:58:47 +0000 (UTC) Received: by mail-qv1-f68.google.com with SMTP id 6a1803df08f44-89461ccc46eso22871286d6.2 for ; Thu, 05 Feb 2026 06:58:47 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ziepe.ca; s=google; t=1770303526; x=1770908326; darn=lists.freedesktop.org; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:from:to:cc:subject:date:message-id:reply-to; bh=6paZ1/dfF6ZJkTrV436UqQ3Veg/Kl0esrhdcHdeVKCQ=; b=Gb0wZeMuhvGggNJtvOLX5qNFM8HEZ4zEgS71O8+VEXArvd623WtcKh7W/r9Hcbc3gQ ablGTnr1XXk9YcMOmUvfRk4V8T3++hsbs2dn+1mOAPxI2Qib9KsNA/RAi/rCpOAHKbfp /4lPBir3uIeZ3/VFyh/SEv0eWQ8+mLZWZibIO4HvCPPc61nMMvFhaQVfhcNRZ0kBq0Xg fHnP2Wqq6I6qLhEOfAAfak3zu/V5IiB6DWrt0tOc6qZnmwGpUnaD3EVfkOKLqzVZxEJL YrHmsEd53RRqUpazI90S+vrFMRPY9GcCZfwBve6npUFxQnsJVVi/3sRS2E53vcxmeiOR 3cPA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1770303526; x=1770908326; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:x-gm-gg:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=6paZ1/dfF6ZJkTrV436UqQ3Veg/Kl0esrhdcHdeVKCQ=; b=mLj0qNOz4DQly/36Bd2NNY8RZ/sUmvYWBw9YSgihC+IeJWGzq5SKBqQ+5lMT5mk8J/ rP6bH+jUrTn3sL9dRA/rdg1ze/uVLNEXYitFZfPKBGPK3wBpLu9dk+SCqxhBxHf7IXOa YvqkB0fo6TheT5gdCf5fHYk3/9i9Srvuh5qf4VUvuPkVeEzC9Pi9Vp3BWJD8n9qR7zVB 32jxaexRdoawcBpC05pnHAiQql86/sL/bleNXKdERvAF+1iTf6JVlWSXkLkLtV3GeP8E Xnol9rYzZJ7zwuX18dxcJptI+FDQbV+z1njTl4cU83l8Xv82Lny76HgBYsfAoE2E8H/i Vuiw== X-Forwarded-Encrypted: i=1; AJvYcCWX1KjzjAQkQqRkoen3Nt5pzMrxYviticBUEjPR5woZjo5X9tIfSmMvxwUL20p+iQqjnUnNZymw@lists.freedesktop.org X-Gm-Message-State: AOJu0YwLLx7pkOUXXMKzZsQGE9DZVggNdVLy/OwgT3ZFBktOi+CT+BG6 ZfjnxO7N8vlEnz5hWkA9CBnAbYpl6CS4MLa9YqkwiufgE1Ap4BlNTOPRDZA8mFISCi8= X-Gm-Gg: AZuq6aKkmRVuaUNvw/sj9XbChYiw9tdKphcOOeCB23DrfguXIrfg9xh9Ti9k6OZVHGu XGaDh62F5zzzis4i2mV3lt+iVp74DdNL4ufIAdtbcRBx3iFevT3T3XhJLNGhWbAYsiBj5f8yIkd KNEjpKNStorHwpalyBG994X3XfKf4aOgEEQ3/o+9DT99UlS0AzZZkFVBApcrz5wxcbhdDfotsnq WJcYXtO3q+iWEuPvDsTStFrESVs7FB4p1KuH++eQK044q/haNM3St0yMK/O/GzKGH0FyqIezpTD VNraECrR4x2gFdo2YcN9TiNdgQRJd5GauIIuht5ndQvzFmA4bIDNsxy4JktqoTA/nHvaoGWcBj4 QaEW9BkR+BIAUGWpAPiKp9IGoaWzqlbLIl1AOIHYkgYmXhEPJaFsyaaV8GFV18WgvF10BzwGF1V M0eyl7vx3ikHxccTP7NKioBC+lrCrnY7tWIleug9w2PyUjriEQjHs/f/46ti/w8Qb1EEE= X-Received: by 2002:ad4:5bc1:0:b0:894:6d0b:502 with SMTP id 6a1803df08f44-895221eff32mr95805386d6.59.1770303526139; Thu, 05 Feb 2026 06:58:46 -0800 (PST) Received: from ziepe.ca (hlfxns017vw-142-162-112-119.dhcp-dynamic.fibreop.ns.bellaliant.net. [142.162.112.119]) by smtp.gmail.com with ESMTPSA id 6a1803df08f44-89521bffb41sm43278866d6.4.2026.02.05.06.58.45 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 05 Feb 2026 06:58:45 -0800 (PST) Received: from jgg by wakko with local (Exim 4.97) (envelope-from ) id 1vo0of-00000000zky-02N9; Thu, 05 Feb 2026 10:58:45 -0400 Date: Thu, 5 Feb 2026 10:58:44 -0400 From: Jason Gunthorpe To: Alex Williamson Cc: Christian =?utf-8?B?S8O2bmln?= , Leon Romanovsky , Simona Vetter , Jani Nikula , Lucas De Marchi , Sumit Semwal , Alex Deucher , David Airlie , Gerd Hoffmann , Dmitry Osipenko , Gurchetan Singh , Chia-I Wu , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , Thomas =?utf-8?Q?Hellstr=C3=B6m?= , Rodrigo Vivi , Kevin Tian , Joerg Roedel , Will Deacon , Robin Murphy , Felix Kuehling , Ankit Agrawal , Vivek Kasireddy , linux-media@vger.kernel.org, dri-devel@lists.freedesktop.org, linaro-mm-sig@lists.linaro.org, linux-kernel@vger.kernel.org, amd-gfx@lists.freedesktop.org, virtualization@lists.linux.dev, intel-xe@lists.freedesktop.org, linux-rdma@vger.kernel.org, iommu@lists.linux.dev, kvm@vger.kernel.org Subject: Re: [PATCH v7 7/8] vfio: Permit VFIO to work with pinned importers Message-ID: <20260205145844.GM2328995@ziepe.ca> References: <20260131-dmabuf-revoke-v7-0-463d956bd527@nvidia.com> <20260131-dmabuf-revoke-v7-7-463d956bd527@nvidia.com> <20260204095659.5a983af2@shazbot.org> <20260205121945.GC12824@unreal> <20260205142111.GK2328995@ziepe.ca> <1b7ee5ad-6dde-415a-8e06-93daddc9bcef@app.fastmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1b7ee5ad-6dde-415a-8e06-93daddc9bcef@app.fastmail.com> X-Mailman-Approved-At: Fri, 06 Feb 2026 14:22:59 +0000 X-BeenThere: amd-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Discussion list for AMD gfx List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: amd-gfx-bounces@lists.freedesktop.org Sender: "amd-gfx" 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 > >> 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