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[47.54.130.67]) by smtp.gmail.com with ESMTPSA id d75a77b69052e-517069f2464sm41772341cf.2.2026.05.27.05.51.40 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 27 May 2026 05:51:40 -0700 (PDT) Received: from jgg by wakko with local (Exim 4.97) (envelope-from ) id 1wSDjX-0000000EOpm-3BXO; Wed, 27 May 2026 09:51:39 -0300 Date: Wed, 27 May 2026 09:51:39 -0300 From: Jason Gunthorpe To: "Dan Williams (nvidia)" Cc: Alexey Kardashevskiy , "Aneesh Kumar K.V (Arm)" , linux-coco@lists.linux.dev, iommu@lists.linux.dev, linux-kernel@vger.kernel.org, kvm@vger.kernel.org, Bjorn Helgaas , Joerg Roedel , Jonathan Cameron , Kevin Tian , Nicolin Chen , Samuel Ortiz , Steven Price , Suzuki K Poulose , Will Deacon , Xu Yilun , Shameer Kolothum , Paolo Bonzini , Tony Krowiak , Halil Pasic , Jason Herne , Harald Freudenberger , Holger Dengler , Heiko Carstens , Vasily Gorbik , Alexander Gordeev , Christian Borntraeger , Sven Schnelle , Alex Williamson , Matthew Rosato , Farhan Ali , Eric Farman , linux-s390@vger.kernel.org Subject: Re: [PATCH v5 5/5] iommufd/vdevice: add TSM request ioctl Message-ID: <20260527125139.GL2487554@ziepe.ca> References: <20260525154816.1029642-1-aneesh.kumar@kernel.org> <20260525154816.1029642-6-aneesh.kumar@kernel.org> <6a168c8ea7d10_2129b2100e@djbw-dev.notmuch> Precedence: bulk X-Mailing-List: linux-coco@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: <6a168c8ea7d10_2129b2100e@djbw-dev.notmuch> On Tue, May 26, 2026 at 11:17:50PM -0700, Dan Williams (nvidia) wrote: > In that case pci_tsm_req_scope becomes tsm_req_type and is just: > > TSM_REQ_TYPE_CCA > TSM_REQ_TYPE_SEV > TSM_REQ_TYPE_TDX > > I am leaning towards the latter at this point. Yeah, this sounds good. I would also include an common op field that can be decoded by the TSM driver based on the TYPE above, and the usual in/out message buffers. Jason