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[142.68.80.239]) by smtp.gmail.com with ESMTPSA id s8-20020a05620a29c800b007881ff8cebasm2390233qkp.92.2024.03.04.15.46.56 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 04 Mar 2024 15:46:56 -0800 (PST) Received: from jgg by wakko with local (Exim 4.95) (envelope-from ) id 1rhI1H-00DOgu-OD; Mon, 04 Mar 2024 19:46:55 -0400 Date: Mon, 4 Mar 2024 19:46:55 -0400 From: Jason Gunthorpe To: Vasant Hegde Cc: iommu@lists.linux.dev, joro@8bytes.org, suravee.suthikulpanit@amd.com, wei.huang2@amd.com, jsnitsel@redhat.com Subject: Re: [PATCH v6 06/15] iommu/amd: Introduce iommu_dev_data.max_pasids Message-ID: <20240304234655.GA9225@ziepe.ca> References: <20240209112930.63663-1-vasant.hegde@amd.com> <20240209112930.63663-7-vasant.hegde@amd.com> Precedence: bulk X-Mailing-List: iommu@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: <20240209112930.63663-7-vasant.hegde@amd.com> On Fri, Feb 09, 2024 at 11:29:21AM +0000, Vasant Hegde wrote: > This variable will track the number of PASIDs supported by the device. > If IOMMU or device doesn't support PASID then it will be zero. > > This will be used while allocating GCR3 table to decide required number > of PASID table levels. Also in PASID bind path it will use this variable > to check whether device supports PASID or not. > > Signed-off-by: Vasant Hegde > --- > drivers/iommu/amd/amd_iommu_types.h | 1 + > drivers/iommu/amd/iommu.c | 12 ++++++++++++ > 2 files changed, 13 insertions(+) Reviewed-by: Jason Gunthorpe Jason