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[47.55.120.4]) by smtp.gmail.com with ESMTPSA id 6a1803df08f44-70742e70964sm47845006d6.23.2025.07.30.09.03.26 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 30 Jul 2025 09:03:26 -0700 (PDT) Received: from jgg by wakko with local (Exim 4.97) (envelope-from ) id 1uh9H4-00000000SCB-0SyY; Wed, 30 Jul 2025 13:03:26 -0300 Date: Wed, 30 Jul 2025 13:03:26 -0300 From: Jason Gunthorpe To: "Aneesh Kumar K.V (Arm)" Cc: linux-coco@lists.linux.dev, kvmarm@lists.linux.dev, linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, aik@amd.com, lukas@wunner.de, Samuel Ortiz , Xu Yilun , Suzuki K Poulose , Steven Price , Catalin Marinas , Marc Zyngier , Will Deacon , Oliver Upton Subject: Re: [RFC PATCH v1 00/38] ARM CCA Device Assignment support Message-ID: <20250730160326.GN26511@ziepe.ca> References: <20250728135216.48084-1-aneesh.kumar@kernel.org> Precedence: bulk X-Mailing-List: linux-coco@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20250728135216.48084-1-aneesh.kumar@kernel.org> On Mon, Jul 28, 2025 at 07:21:37PM +0530, Aneesh Kumar K.V (Arm) wrote: > This patch series implements support for Device Assignment in the ARM CCA > architecture. The code changes are based on Alp12 specification published here > [1]. Robin and I were talking about CCA and DMA here: https://lore.kernel.org/r/6c5fb9f0-c608-4e19-8c60-5d8cef3efbdf@arm.com What do you think about pulling some of this out and trying to independently push a series getting the DMA API layers ready for device assignment? I think there will be some discussion on these points, it would be good to get started. Jason