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Howlett" , Vlastimil Babka , Mike Rapoport , Suren Baghdasaryan , Michal Hocko , Axel Rasmussen , Yuanchu Xie , Chunyan Zhang Subject: Re: [PATCH V12 4/5] riscv: mm: Add soft-dirty page tracking support Message-ID: References: <20250915101343.1449546-1-zhangchunyan@iscas.ac.cn> <20250915101343.1449546-5-zhangchunyan@iscas.ac.cn> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20250915101343.1449546-5-zhangchunyan@iscas.ac.cn> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250916_144540_165256_00D72E8B X-CRM114-Status: UNSURE ( 7.90 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="us-ascii"; Format="flowed" Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org On Mon, Sep 15, 2025 at 06:13:42PM +0800, Chunyan Zhang wrote: >The Svrsw60t59b extension allows to free the PTE reserved bits 60 and 59 >for software, this patch uses bit 59 for soft-dirty. > >To add swap PTE soft-dirty tracking, we borrow bit 3 which is available >for swap PTEs on RISC-V systems. > >Signed-off-by: Chunyan Zhang Reviewed-by: Deepak Gupta >--- _______________________________________________ linux-riscv mailing list linux-riscv@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-riscv