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[47.54.130.67]) by smtp.gmail.com with ESMTPSA id d75a77b69052e-50dd561adc2sm92695761cf.27.2026.04.13.09.11.41 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 13 Apr 2026 09:11:41 -0700 (PDT) Received: from jgg by wakko with local (Exim 4.97) (envelope-from ) id 1wCJsy-00000005QJz-2hk6; Mon, 13 Apr 2026 13:11:40 -0300 Date: Mon, 13 Apr 2026 13:11:40 -0300 From: Jason Gunthorpe To: Ankit Soni Cc: iommu@lists.linux.dev, vasant.hegde@amd.com, suravee.suthikulpanit@amd.com, joro@8bytes.org, will@kernel.org, robin.murphy@arm.com, linux-kernel@vger.kernel.org Subject: Re: [PATCH v5 2/4] iommu_pt: support small VA for AMDv1 Message-ID: <20260413161140.GO3694781@ziepe.ca> References: <64515b0d53c541ae52347ac3c0f90b75bcbde0c2.1776075533.git.Ankit.Soni@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: <64515b0d53c541ae52347ac3c0f90b75bcbde0c2.1776075533.git.Ankit.Soni@amd.com> On Mon, Apr 13, 2026 at 02:45:19PM +0000, Ankit Soni wrote: > When hardware/VM request a small VA limit, the generic page-table code > clears PT_FEAT_DYNAMIC_TOP. This later causes domain initialization to > fail with -EOPNOTSUPP. > > Remove the clearing so init succeeds when the VA fits in the starting > level and no top-level growth is needed. > > Signed-off-by: Ankit Soni > --- > drivers/iommu/generic_pt/iommu_pt.h | 4 ---- > 1 file changed, 4 deletions(-) Reviewed-by: Jason Gunthorpe Jason