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([2a09:80c0:192:0:5dac:bf3d:c41:c3e7]) by smtp.gmail.com with ESMTPSA id fj12-20020a05600c0c8c00b003ef67848a21sm5130037wmb.13.2023.04.06.05.07.59 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 06 Apr 2023 05:07:59 -0700 (PDT) Message-ID: <46f68930-fdfc-db3d-5f28-521ff76e170a@redhat.com> Date: Thu, 6 Apr 2023 14:07:58 +0200 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.9.1 Subject: Re: [PATCH v3 0/6] Expose GPU memory as coherently CPU accessible To: ankita@nvidia.com, jgg@nvidia.com, alex.williamson@redhat.com, naoya.horiguchi@nec.com, maz@kernel.org, oliver.upton@linux.dev Cc: aniketa@nvidia.com, cjia@nvidia.com, kwankhede@nvidia.com, targupta@nvidia.com, vsethi@nvidia.com, acurrid@nvidia.com, apopple@nvidia.com, jhubbard@nvidia.com, danw@nvidia.com, kvm@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mm@kvack.org References: <20230405180134.16932-1-ankita@nvidia.com> From: David Hildenbrand Organization: Red Hat In-Reply-To: <20230405180134.16932-1-ankita@nvidia.com> X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Language: en-US Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Rspam-User: X-Rspamd-Queue-Id: 001FE140005 X-Rspamd-Server: rspam01 X-Stat-Signature: 9wg93bqz7ypcs7ruq6awwks5r4ijxyg7 X-HE-Tag: 1680782884-325381 X-HE-Meta: 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 Zn5VV7EK bv9ybLOr9HHuTE7V66JYasJCivDVPfzKxbqkNRose/WWiTIN0P1DKho3uGXw0ce9JXPzP+fCeU7gE5aPch+DDv8RfsmfI3JVFzCEmmKKfoHWFcgZqdjHRSoW2sHiCeO1SR2efFi+V+R5Rq2Dm6Y2CgP2GpEBYuRzZqUGBlXc88B+3kcEgaEr0GG4xwVsgrZMuq08nz8XzGpiVNiul/u6XhkfKGo6myAaYNJPSkps7hl1v9/117+inpP2jeYVrP72jX/FQWCt3Sreb5FPGE1UkulnJtjfKtVYcxFLdHOOt6hiq+dyhmRcC4QzCOFBBepK6UvW2H2y1QcNq0tXDJOO+ykHsxwMV52hRsX7KOVtZ7+QqOel5UfFEeF6rBfpzkVUE6+uPd5xnlVh1vTWxhy7Q90wXSoBBLxkF8NRekYN5dNgwFMipNpDvvomGMUIwROESGA6C X-Bogosity: Ham, tests=bogofilter, spamicity=0.004376, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: [...] > This goes along with a qemu series to provides the necessary > implementation of the Grace Hopper Superchip firmware specification so > that the guest operating system can see the correct ACPI modeling for > the coherent GPU device. > https://github.com/qemu/qemu/compare/master...ankita-nv:qemu:dev-ankit/cohmem-0330 > > Applied and tested over v6.3-rc4. > I briefly skimmed over the series, the patch subject prefixes are a bit misleading IMHO and could be improved: > Ankit Agrawal (6): > kvm: determine memory type from VMA this is arch64 specific kvm (kvm/aarch64: ?) > vfio/nvgpu: expose GPU device memory as BAR1 > mm: handle poisoning of pfn without struct pages mm/memory-failure: > mm: Add poison error check in fixup_user_fault() for mapped PFN That's both MM and core-KVM, maybe worth splitting up. > mm: Change ghes code to allow poison of non-struct PFN That's drivers/acpi/apei code, not core-mm code. > vfio/nvgpu: register device memory for poison handling -- Thanks, David / dhildenb