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Wed, 07 Aug 2024 05:33:36 -0700 (PDT) Received: from ziepe.ca ([128.77.69.90]) by smtp.gmail.com with ESMTPSA id d75a77b69052e-451c87fc919sm4389161cf.96.2024.08.07.05.33.35 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 07 Aug 2024 05:33:35 -0700 (PDT) Received: from jgg by wakko with local (Exim 4.95) (envelope-from ) id 1sbfrC-001p0y-KM; Wed, 07 Aug 2024 09:33:34 -0300 Date: Wed, 7 Aug 2024 09:33:34 -0300 From: Jason Gunthorpe To: Baolu Lu Cc: Vasant Hegde , iommu@lists.linux.dev, joro@8bytes.org, will@kernel.org, robin.murphy@arm.com, suravee.suthikulpanit@amd.com, yi.l.liu@intel.com Subject: Re: [PATCH RFCv2] iommu: Add domain type and flag to domain_alloc_paging() Message-ID: <20240807123334.GE8473@ziepe.ca> References: <20240801144523.11803-1-vasant.hegde@amd.com> <8e531f39-9d14-4d3b-8a52-c2e8ca026f9e@linux.intel.com> <098008f7-2b3e-405a-a096-947e5df560e6@amd.com> <20240806123452.GE676757@ziepe.ca> <6b197aac-c38f-4e6e-9d32-d74e1a5b3968@amd.com> <20240806173230.GS676757@ziepe.ca> <2c537d82-c511-4367-8a5c-29122745326d@linux.intel.com> 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: <2c537d82-c511-4367-8a5c-29122745326d@linux.intel.com> On Wed, Aug 07, 2024 at 01:49:02PM +0800, Baolu Lu wrote: > Convert paging domain to user domain allocation appears to be a > reasonable solution. But I think it's not VFIO-only, vhost-vdpa is > another case, right? I suspect vhost-vdpa doesn't use PCI devices with a PASID cap. Hopefully they will support iommufd before that becomes an issue :) Jason