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[47.54.130.67]) by smtp.gmail.com with ESMTPSA id af79cd13be357-914bb8c7dc7sm116726285a.6.2026.05.22.06.22.40 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 22 May 2026 06:22:41 -0700 (PDT) Received: from jgg by wakko with local (Exim 4.97) (envelope-from ) id 1wQPpo-00000003hPg-2B15; Fri, 22 May 2026 10:22:40 -0300 Date: Fri, 22 May 2026 10:22:40 -0300 From: Jason Gunthorpe To: "Aneesh Kumar K.V" Cc: Jiri Pirko , dri-devel@lists.freedesktop.org, linaro-mm-sig@lists.linaro.org, iommu@lists.linux.dev, linux-media@vger.kernel.org, sumit.semwal@linaro.org, benjamin.gaignard@collabora.com, Brian.Starkey@arm.com, jstultz@google.com, tjmercier@google.com, christian.koenig@amd.com, m.szyprowski@samsung.com, robin.murphy@arm.com, leon@kernel.org, sean.anderson@linux.dev, ptesarik@suse.com, catalin.marinas@arm.com, suzuki.poulose@arm.com, steven.price@arm.com, thomas.lendacky@amd.com, john.allen@amd.com, ashish.kalra@amd.com, suravee.suthikulpanit@amd.com, linux-coco@lists.linux.dev Subject: Re: [PATCH v5 1/2] dma-mapping: introduce DMA_ATTR_CC_SHARED for shared memory Message-ID: <20260522132240.GD7702@ziepe.ca> References: <4qdizkkoeke3cvkcf35upa7p7ick6s654eqlrizmi7ozkw5eze@tnpk2e34xgwl> <20260421121004.GA3611611@ziepe.ca> <20260424225514.GE804026@ziepe.ca> <20260426130531.GF804026@ziepe.ca> <20260521175420.GA7702@ziepe.ca> Precedence: bulk X-Mailing-List: iommu@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: On Fri, May 22, 2026 at 10:09:26AM +0530, Aneesh Kumar K.V wrote: > Can I convert this as an independent patch with your SOB? Sure, Maybe you can ignore it for your series, the intersection of CC and P2P is non-existant right now. HW doesn't support it. Make the DMA API follow the design assuming this patch is applied. Jason