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[142.167.219.86]) by smtp.gmail.com with ESMTPSA id d75a77b69052e-4778317b422sm14154691cf.49.2025.03.28.11.21.37 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 28 Mar 2025 11:21:37 -0700 (PDT) Received: from jgg by wakko with local (Exim 4.97) (envelope-from ) id 1tyEKm-00000000h20-2UIY; Fri, 28 Mar 2025 15:21:36 -0300 Date: Fri, 28 Mar 2025 15:21:36 -0300 From: Jason Gunthorpe To: Pranjal Shrivastava Cc: Mostafa Saleh , Robin Murphy , Joerg Roedel , Will Deacon , Nicolin Chen , Daniel Mentz , iommu@lists.linux.dev Subject: Re: [RFC PATCH 0/5] iommu/arm-smmu-v3: Implement Runtime/System Sleep ops Message-ID: <20250328182136.GA161236@ziepe.ca> References: <20250319115730.GC10600@ziepe.ca> <003f23d7-b829-4611-8dd3-35b56a7ca90e@arm.com> <63806834-a0a1-41e0-9cca-60087b460f78@arm.com> <20250328131844.GC20836@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, Mar 28, 2025 at 03:08:36PM +0000, Pranjal Shrivastava wrote: > I like the idea of a flag telling us if the implementation boots with > GBPA.Abort = 0 but I'm unsure of how the iommu driver would understand > what attachments are insecure (or even if we'd wanna add that kind of > intelligence in the drivers) I suspect we can reasonably add a domain flag that is set by vfio and the pci untrusted paths. Jason