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[34.168.149.56]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-8455364d4e7sm28363b3a.11.2026.06.18.13.43.27 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 18 Jun 2026 13:43:28 -0700 (PDT) Date: Thu, 18 Jun 2026 20:43:24 +0000 From: David Matlack To: Rubin Du Cc: Alex Williamson , Shuah Khan , kvm@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v14 4/4] vfio: selftests: Add NVIDIA Falcon driver for DMA testing Message-ID: References: <20260609232855.3808971-1-rubind@nvidia.com> <20260609232855.3808971-5-rubind@nvidia.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260609232855.3808971-5-rubind@nvidia.com> On 2026-06-09 04:28 PM, Rubin Du wrote: > Add a new VFIO PCI driver for NVIDIA GPUs that enables DMA testing > via the Falcon (Fast Logic Controller) microcontrollers. This driver > extracts and adapts the DMA test functionality from NVIDIA's > gpu-admin-tools project and integrates it into the existing VFIO > selftest framework. > > Falcons are general-purpose microcontrollers present on NVIDIA GPUs > that can perform DMA operations between system memory and device > memory. By leveraging Falcon DMA, this driver allows NVIDIA GPUs to > be tested alongside Intel IOAT and DSA devices using the same > selftest infrastructure. > > The driver is named 'nv_falcon' to reflect that it specifically > controls the Falcon microcontrollers for DMA operations, rather > than exposing general GPU functionality. > > Reference implementation: > https://github.com/NVIDIA/gpu-admin-tools > > Signed-off-by: Alex Williamson > Signed-off-by: Rubin Du Acked-by: David Matlack