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[124.171.107.241]) by smtp.gmail.com with UTF8SMTPSA id fr23sm452105pjb.22.2021.03.23.19.39.06 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 23 Mar 2021 19:39:13 -0700 (PDT) Message-ID: Date: Wed, 24 Mar 2021 13:39:04 +1100 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:87.0) Gecko/20100101 Thunderbird/87.0 Subject: Re: [PATCH 8/9] vfio/pci: export nvlink2 support into vendor vfio_pci drivers Content-Language: en-US To: Jason Gunthorpe , Alex Williamson Cc: Christoph Hellwig , Max Gurtovoy , cohuck@redhat.com, kvm@vger.kernel.org, linux-kernel@vger.kernel.org, liranl@nvidia.com, oren@nvidia.com, tzahio@nvidia.com, leonro@nvidia.com, yarong@nvidia.com, aviadye@nvidia.com, shahafs@nvidia.com, artemp@nvidia.com, kwankhede@nvidia.com, ACurrid@nvidia.com, cjia@nvidia.com, yishaih@nvidia.com, mjrosato@linux.ibm.com References: <20210319162033.GA18218@lst.de> <20210319162848.GZ2356281@nvidia.com> <20210319163449.GA19186@lst.de> <20210319113642.4a9b0be1@omen.home.shazbot.org> <20210319200749.GB2356281@nvidia.com> <20210319150809.31bcd292@omen.home.shazbot.org> <20210319225943.GH2356281@nvidia.com> <20210319224028.51b01435@x1.home.shazbot.org> <20210321125818.GM2356281@nvidia.com> <20210322104016.36eb3c1f@omen.home.shazbot.org> <20210323193213.GM2356281@nvidia.com> From: Alexey Kardashevskiy In-Reply-To: <20210323193213.GM2356281@nvidia.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 24/03/2021 06:32, Jason Gunthorpe wrote: >>> For NVIDIA GPU Max checked internally and we saw it looks very much >>> like how Intel GPU works. Only some PCI IDs trigger checking on the >>> feature the firmware thing is linked to. >> >> And as Alexey noted, the table came up incomplete. But also those same >> devices exist on platforms where this extension is completely >> irrelevant. > > I understood he ment that NVIDI GPUs *without* NVLINK can exist, but > the ID table we have here is supposed to be the NVLINK compatible > ID's. I also meant there are more (than in the proposed list) GPUs with NVLink which will work on P9. -- Alexey