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[47.55.120.4]) by smtp.gmail.com with ESMTPSA id 6a1803df08f44-721cf6d6cffsm6692606d6.54.2025.09.02.09.10.28 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 02 Sep 2025 09:10:28 -0700 (PDT) Received: from jgg by wakko with local (Exim 4.97) (envelope-from ) id 1utTaW-00000001ZJf-1Cbn; Tue, 02 Sep 2025 13:10:28 -0300 Date: Tue, 2 Sep 2025 13:10:28 -0300 From: Jason Gunthorpe To: Qinxin Xia Cc: will@kernel.org, robin.murphy@arm.com, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, iommu@lists.linux.dev, yangyicong@huawei.com, wangzhou1@hisilicon.com, prime.zeng@hisilicon.com, xuwei5@huawei.com, fanghao11@huawei.com, jonathan.cameron@huawei.com, linuxarm@huawei.com Subject: Re: [PATCH 0/2] iommu: Add io_ptdump debug interface for iommu Message-ID: <20250902161028.GC184112@ziepe.ca> References: <20250814093005.2040511-1-xiaqinxin@huawei.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20250814093005.2040511-1-xiaqinxin@huawei.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250902_091031_057944_F4CB6259 X-CRM114-Status: GOOD ( 12.63 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Thu, Aug 14, 2025 at 05:30:03PM +0800, Qinxin Xia wrote: > This patch supports the iopgtable_dump function (similar to kernel_page_dump). > The IOMMU page table dump debugging function is added to the framework layer. > Different architectures only need to provide the implemented dump ops. > It also provides the implementation of ARM SMMUv3 and io-pgtable-arm. > > Qinxin Xia (2): > iommu/debug: Add IOMMU page table dump debug facility > iommu/io-pgtable: Add ARM SMMUv3 page table dump support I'd prefer we do this on top of iommu pt please, I don't want to further deeping the hole of changing all the page table code in all drivers for debugfs. Jason