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Tue, 20 Aug 2024 06:52:29 -0700 (PDT) Received: from ziepe.ca ([128.77.69.90]) by smtp.gmail.com with ESMTPSA id af79cd13be357-7a4ff02f89bsm530357085a.23.2024.08.20.06.52.29 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 20 Aug 2024 06:52:29 -0700 (PDT) Received: from jgg by wakko with local (Exim 4.95) (envelope-from ) id 1sgPHg-002W0g-35; Tue, 20 Aug 2024 10:52:28 -0300 Date: Tue, 20 Aug 2024 10:52:28 -0300 From: Jason Gunthorpe To: Yi Liu Cc: Vasant Hegde , Baolu Lu , Joerg Roedel , Will Deacon , Robin Murphy , Kevin Tian , iommu@lists.linux.dev, linux-kernel@vger.kernel.org Subject: Re: [PATCH 1/1] iommu/vt-d: Move PCI PASID enablement to probe path Message-ID: <20240820135228.GX3468552@ziepe.ca> References: <20240816104945.97160-1-baolu.lu@linux.intel.com> <6650ce02-ac85-4cb6-941c-cc7e8b6effc4@amd.com> <92b55591-e106-4366-ba5b-0588af50770f@linux.intel.com> <635b24b7-632d-4046-b82e-6ac6976686c9@amd.com> <0e807eec-ce51-42e2-9290-dc90c4210888@linux.intel.com> <20240819123400.GU3468552@ziepe.ca> <4d9c1513-8062-4594-a06a-c9f179abdaab@linux.intel.com> <72e59734-431e-4eb4-b27c-44eefab3dcb0@amd.com> <95473081-db0b-4802-b875-24605ab2ef37@intel.com> Precedence: bulk X-Mailing-List: linux-kernel@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: <95473081-db0b-4802-b875-24605ab2ef37@intel.com> On Tue, Aug 20, 2024 at 04:55:26PM +0800, Yi Liu wrote: > Are we sure that it is ok to enable PRI before enabling ATS? I did not see language in the spec prohibiting this order. Jason