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Wed, 27 May 2020 01:41:47 -0700 (PDT) Date: Wed, 27 May 2020 10:41:37 +0200 From: Jean-Philippe Brucker To: Xiang Zheng Cc: iommu@lists.linux-foundation.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-pci@vger.kernel.org, linux-mm@kvack.org, fenghua.yu@intel.com, kevin.tian@intel.com, jacob.jun.pan@linux.intel.com, jgg@ziepe.ca, catalin.marinas@arm.com, joro@8bytes.org, robin.murphy@arm.com, hch@infradead.org, zhangfei.gao@linaro.org, Jonathan.Cameron@huawei.com, felix.kuehling@amd.com, xuzaibo@huawei.com, will@kernel.org, christian.koenig@amd.com, baolu.lu@linux.intel.com, Wang Haibin Subject: Re: [PATCH v7 18/24] iommu/arm-smmu-v3: Add support for Hardware Translation Table Update Message-ID: <20200527084137.GA265288@myrica> References: <20200519175502.2504091-1-jean-philippe@linaro.org> <20200519175502.2504091-19-jean-philippe@linaro.org> <4eea10e0-1343-8d7d-ba8d-214d05558c76@huawei.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <4eea10e0-1343-8d7d-ba8d-214d05558c76@huawei.com> X-Rspamd-Queue-Id: 541B8180442C2 X-Spamd-Result: default: False [0.00 / 100.00] X-Rspamd-Server: rspam03 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Wed, May 27, 2020 at 11:00:29AM +0800, Xiang Zheng wrote: > Hi Jean, > > This patch only enables HTTU bits in CDs. Is it also neccessary to enable > HTTU bits in STEs in this patch? Only if you need HTTU for stage-2 tables. This series is only about sharing stage-1 page tables, for which HTTU is enabled in the CD. I'll add a statement in the commit message. Thanks, Jean