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Wed, 23 Sep 2026 15:42:52 -0700 (PDT) Date: Wed, 23 Sep 2026 15:42:51 -0700 In-Reply-To: <6-v7-c6d30e8ce1e4+3dfa6-mlx5st_jgg@nvidia.com> Mime-Version: 1.0 References: <0-v7-c6d30e8ce1e4+3dfa6-mlx5st_jgg@nvidia.com> <6-v7-c6d30e8ce1e4+3dfa6-mlx5st_jgg@nvidia.com> Message-ID: Subject: Re: [PATCH v7 06/10] vfio: selftests: Allow drivers to specify required region size From: Sean Christopherson To: Jason Gunthorpe Cc: Alex Williamson , David Matlack , Fuad Tabba , Joey Gouly , kvm@vger.kernel.org, kvmarm@lists.linux.dev, Leon Romanovsky , linux-arm-kernel@lists.infradead.org, linux-kselftest@vger.kernel.org, linux-rdma@vger.kernel.org, Marc Zyngier , Mark Bloch , netdev@vger.kernel.org, Oliver Upton , Paolo Bonzini , Saeed Mahameed , Steffen Eiden , Shuah Khan , Suzuki K Poulose , Tariq Toukan , Zenghui Yu , patches@lists.linux.dev Content-Type: text/plain; charset="us-ascii" X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260923_154254_091182_3700429A X-CRM114-Status: GOOD ( 10.39 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Mon, Sep 21, 2026, Jason Gunthorpe wrote: > Add a region_size field to struct vfio_pci_driver_ops so drivers can > declare how much DMA-mapped region they need. The mlx5 driver will need > ~18MB for firmware pages. Existing drivers pass in the sizeof their state > struct. Since drivers all use only their declared state we can use the > value directly and remove the SZ_2M hard coding. > > Assisted-by: Claude:claude-opus-4.6 > Signed-off-by: Jason Gunthorpe > --- The KVM test still runs, and in David I trust: Acked-by: Sean Christopherson