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([2a01:e0a:280:24f0:9db0:474c:ff43:9f5c]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-47a8816877asm56455e9.0.2025.12.10.07.40.17 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 10 Dec 2025 07:40:18 -0800 (PST) Message-ID: Date: Wed, 10 Dec 2025 16:40:17 +0100 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v5 31/32] vfio: Synthesize vPASID capability to VM To: Shameer Kolothum , "qemu-arm@nongnu.org" , "qemu-devel@nongnu.org" Cc: "eric.auger@redhat.com" , "peter.maydell@linaro.org" , Jason Gunthorpe , Nicolin Chen , "ddutile@redhat.com" , "berrange@redhat.com" , Nathan Chen , Matt Ochs , "smostafa@google.com" , "wangzhou1@hisilicon.com" , "jiangkunkun@huawei.com" , "jonathan.cameron@huawei.com" , "zhangfei.gao@linaro.org" , "zhenzhong.duan@intel.com" , "yi.l.liu@intel.com" , Krishnakant Jaju References: <20251031105005.24618-1-skolothumtho@nvidia.com> <20251031105005.24618-32-skolothumtho@nvidia.com> <2ce54748-5a35-4ae9-9dea-f893a3467825@redhat.com> Content-Language: en-US, fr From: =?UTF-8?Q?C=C3=A9dric_Le_Goater?= Autocrypt: addr=clg@redhat.com; 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charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Received-SPF: pass client-ip=170.10.129.124; envelope-from=clg@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H2=0.001, RCVD_IN_VALIDITY_CERTIFIED_BLOCKED=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Hello again, >> In this case, I think we can extend HostIOMMUDevice and associated >> class, to handle PASID support. Please rework this patch. I can >> merge as a prereq change. > > I had a go at extending the HostIOMMUDeviceClass in v4 here, > https://lore.kernel.org/qemu-devel/20250929133643.38961-26-skolothumtho@nvidia.com/ > > Is something similar you have in mind here? yes. That's the spirit. vfio-pci should be host IOMMU agnostic. Thanks, C.