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[50.92.54.205]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-38f814e523dsm112041a91.2.2026.07.28.16.29.36 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 28 Jul 2026 16:29:36 -0700 (PDT) Received: from jgg by jggl with local (Exim 4.95) (envelope-from ) id 1worEt-0001oO-LX; Tue, 28 Jul 2026 20:29:35 -0300 Date: Tue, 28 Jul 2026 20:29:35 -0300 From: Jason Gunthorpe To: Alexey Kardashevskiy Cc: linux-coco@lists.linux.dev, linux-pci@vger.kernel.org, driver-core@lists.linux.dev, ankita@nvidia.com, Aaron Tomlin , Alistair Francis , "Aneesh Kumar K.V" , Arnd Bergmann , Bjorn Helgaas , Daniel Gomez , Danilo Krummrich , Dexuan Cui , Donald Hunter , Greg Kroah-Hartman , Jakub Kicinski , Luis Chamberlain , Lukas Wunner , Petr Pavlu , "Rafael J. Wysocki" , Robin Murphy , Sami Tolvanen , Samuel Ortiz , Saravana Kannan , Will Deacon , Xu Yilun , "Fontenot, Nathan" Subject: Re: [PATCH 00/15] Device Evidence and Trust for PCI Security Protocol (TDISP) Message-ID: References: <20260705220819.2472765-1-djbw@kernel.org> <4c43da3e-c598-48cf-8491-cb958e574c9c@amd.com> Precedence: bulk X-Mailing-List: linux-pci@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <4c43da3e-c598-48cf-8491-cb958e574c9c@amd.com> On Tue, Jul 28, 2026 at 06:20:10PM +1000, Alexey Kardashevskiy wrote: > On 6/7/26 08:08, Dan Williams wrote: > > Major changes since: "[PATCH v2 00/19] PCI/TSM: TEE I/O infrastructure" [1] > > soo with the recent sudden sad news about Dan, I do not know where to start really so I just start... > > Here is his unfinished work which I'd really like to see finished to > progress with the phase2 of the plan. How do we proceed from now on? Yes, we do, but at least I need some more time before considering what to do, sorry. > The direction appears to be set, imho the immediate TODO list is: > - address "not-netlink-y enough" concerns > - teach pci_iomap() to map mixed private+shared BARs (ones which contain MSIX for the starter) > - always call pci_tsm_ops::enable_dma/disable_dma > - ditch the module trust parameter? > - add a knob to enable/disable DMA and keep TDI in RUN I somehow suspect we should probably reduce the scope somewhat into smaller chunks at a time and try to follow this as a skeleton, but I haven't studied it carefully. Jason