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[142.68.80.239]) by smtp.gmail.com with ESMTPSA id af79cd13be357-7a806d3944esm44767985a.80.2024.08.29.05.03.28 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 29 Aug 2024 05:03:29 -0700 (PDT) Received: from jgg by wakko with local (Exim 4.95) (envelope-from ) id 1sjds7-007TEL-WF; Thu, 29 Aug 2024 09:03:28 -0300 Date: Thu, 29 Aug 2024 09:03:27 -0300 From: Jason Gunthorpe To: Dan Williams Cc: Alexey Kardashevskiy , kvm@vger.kernel.org, iommu@lists.linux.dev, linux-coco@lists.linux.dev, linux-pci@vger.kernel.org, Suravee Suthikulpanit , Alex Williamson , pratikrajesh.sampat@amd.com, michael.day@amd.com, david.kaplan@amd.com, dhaval.giani@amd.com, Santosh Shukla , Tom Lendacky , Michael Roth , Alexander Graf , Nikunj A Dadhania , Vasant Hegde , Lukas Wunner Subject: Re: [RFC PATCH 07/21] pci/tdisp: Introduce tsm module Message-ID: <20240829120327.GT3468552@ziepe.ca> References: <20240823132137.336874-1-aik@amd.com> <20240823132137.336874-8-aik@amd.com> <20240827123242.GM3468552@ziepe.ca> <6e9e4945-8508-4f48-874e-9150fd2e38f3@amd.com> <20240828234240.GR3468552@ziepe.ca> <66cfba391a779_31daf294a5@dwillia2-xfh.jf.intel.com.notmuch> <20240829000910.GS3468552@ziepe.ca> <66cfbec0352ca_47347294af@dwillia2-xfh.jf.intel.com.notmuch> 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: <66cfbec0352ca_47347294af@dwillia2-xfh.jf.intel.com.notmuch> On Wed, Aug 28, 2024 at 05:20:16PM -0700, Dan Williams wrote: > I encourage those folks need to read the actual hardware specs, not just > the PCI spec. As far as I know there is only one host platform > implementation that allows IDE establishment and traffic flow for T=0 > cases. So it is not yet trending to be a common thing that the PCI core > can rely upon. I think their perspective is this is the only path to do certain things in PCI land (from a packet on the wire perspective) so they would expect the platforms to align eventually if the standards go that way.. Jason