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From: Muchun Song In-Reply-To: <20230801023145.17026-3-wangkefeng.wang@huawei.com> Date: Tue, 1 Aug 2023 10:31:59 +0800 Cc: Andrew Morton , Catalin Marinas , Will Deacon , Mike Kravetz , Mina Almasry , kirill@shutemov.name, joel@joelfernandes.org, William Kucharski , kaleshsingh@google.com, Linux-MM , linux-arm-kernel@lists.infradead.org, LKML , 21cnbao@gmail.com Content-Transfer-Encoding: 7bit Message-Id: <57B3651F-4BDC-4059-82AD-56070634D8CE@linux.dev> References: <20230801023145.17026-1-wangkefeng.wang@huawei.com> <20230801023145.17026-3-wangkefeng.wang@huawei.com> To: Kefeng Wang X-Migadu-Flow: FLOW_OUT X-Stat-Signature: ipbugmqfcnye7criu3954fy4z6wd4b1n X-Rspamd-Server: rspam10 X-Rspamd-Queue-Id: 5B855A0005 X-Rspam-User: X-HE-Tag: 1690857168-35566 X-HE-Meta: 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 pCIQ9sIM +NcGkOHQom6Hb9djcUZEIPEtJ9ee6vLeFDdzdLKzmgTnHkSefYCTFKJcQEP9l7NL+fmcJ3vqj0i0cIFkQeO9HSJ5sYBOyFKLxOs/4WzawpynzhicHaLFXTBKamRARsoEK9eCQJDuLTzJyFm73hR074LBbz3B+L4+bgqciRNB6EqBgBiLNo0nnDBn9nqWvHG7v+gWLYzP33k8UBponlwi4DyEzR4B4muyCRkX2qWqsIMExmt0RK8Yradg++g== 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 Aug 1, 2023, at 10:31, Kefeng Wang wrote: > > It is better to use huge page size instead of PAGE_SIZE > for stride when flush hugepage, which reduces the loop > in __flush_tlb_range(). > > Let's support arch's flush_hugetlb_tlb_range(), which is > used in hugetlb_unshare_all_pmds(), move_hugetlb_page_tables() > and hugetlb_change_protection() for now. > > Note, for hugepages based on contiguous bit, it has to be > invalidated individually since the contiguous PTE bit is > just a hint, the hardware may or may not take it into account. > > Signed-off-by: Kefeng Wang Reviewed-by: Muchun Song