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([2a01:e0a:59e:9d80:527b:9dff:feef:3874]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-390e47b6cd8sm14961183f8f.44.2025.03.03.10.07.37 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 03 Mar 2025 10:07:37 -0800 (PST) Message-ID: <25f360d5-d89f-4d21-a80d-21699bc14da1@redhat.com> Date: Mon, 3 Mar 2025 19:07:36 +0100 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 2/2] vfio: Make vfio-platform available on Aarch64 platforms only Content-Language: en-US To: =?UTF-8?Q?Philippe_Mathieu-Daud=C3=A9?= , Alex Williamson Cc: =?UTF-8?Q?C=C3=A9dric_Le_Goater?= , qemu-devel@nongnu.org, Will Deacon , Peter Maydell , Marc Zyngier References: <20250226084721.232703-1-clg@redhat.com> <20250226084721.232703-3-clg@redhat.com> <291bf12d-18bc-444f-b09d-3fb80e0f144a@redhat.com> <20250227102737.197ab32b.alex.williamson@redhat.com> From: Eric Auger In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=170.10.133.124; envelope-from=eric.auger@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H2=-0.01, RCVD_IN_VALIDITY_CERTIFIED_BLOCKED=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: eric.auger@redhat.com Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Hi, On 3/3/25 3:32 PM, Philippe Mathieu-Daudé wrote: > On 27/2/25 18:27, Alex Williamson wrote: >> On Thu, 27 Feb 2025 09:32:46 +0100 >> Eric Auger wrote: >> >>> Hi Cédric, >>> >>> On 2/26/25 9:47 AM, Cédric Le Goater wrote: >>>> VFIO Platforms was designed for Aarch64. Restrict availability to >>>> 64-bit host platforms. >>>> >>>> Cc: Eric Auger >>>> Signed-off-by: Cédric Le Goater >>> Reviewed-by: Eric Auger > > Reviewed-by: Philippe Mathieu-Daudé > >>> As an outcome from last KVM forum, next step may be to simply remove >>> VFIO_PLATFORM from the qemu tree. >>> >>> We also need to make a decision wrt linux vfio platform driver. As I >>> can't test it anymore without hacks (my last tegra234 mgbe works are >>> unlikely to land on qemu side and lack traction on kernel side too), >>> either someone who can test it volunteers to take over the kernel >>> maintainership or we remove it from kernel too. >> >> I think it's more than just a kernel maintainer stepping up to test, >> there really needs to be some in-kernel justification for the >> vfio-platform driver itself.  If it's only enabling out of tree use >> cases and there's nothing in-tree that's actually independently >> worthwhile, I don't really see why we shouldn't remove it and just let >> those out of tree use cases provide their own out of tree versions of >> vfio-platform.  Thanks, > > Now (1 week before freeze for release) is a good time to post a patch > deprecating it :) Yes I will do that tomorrow Eric