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Wed, 16 Sep 2026 10:52:23 -0400 (EDT) Date: Wed, 16 Sep 2026 15:52:23 +0100 From: Kiryl Shutsemau To: Usama Arif Cc: Andrew Morton , david@kernel.org, chrisl@kernel.org, kasong@tencent.com, ljs@kernel.org, ziy@nvidia.com, linux-mm@kvack.org, ying.huang@linux.alibaba.com, Baoquan He , willy@infradead.org, youngjun.park@lge.com, hannes@cmpxchg.org, riel@surriel.com, shakeel.butt@linux.dev, alex@ghiti.fr, baohua@kernel.org, dev.jain@arm.com, baolin.wang@linux.alibaba.com, Nico Pache , "Liam R. Howlett" , ryan.roberts@arm.com, Vlastimil Babka , lance.yang@linux.dev, linux-kernel@vger.kernel.org, nphamcs@gmail.com, shikemeng@huaweicloud.com, yosry@kernel.org, qi.zheng@linux.dev, luizcap@redhat.com, kernel-team@meta.com Subject: Re: [RESEND v7 09/29] mm/debug_vm_pgtable: test PMD swap-exclusive helpers Message-ID: References: <20260914122950.3283997-1-usama.arif@linux.dev> <20260914122950.3283997-10-usama.arif@linux.dev> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260914122950.3283997-10-usama.arif@linux.dev> X-Rspam-User: X-Rspamd-Server: rspam08 X-Rspamd-Queue-Id: B247FA000A X-Stat-Signature: bns7xoywy4kbh74eg3okom6j3akeusqa X-HE-Tag: 1789570353-672712 X-HE-Meta: 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 bUpUcbfI Vdb6Xkxb62m5CLZ/RrQVhs/cBGKn314Jv2e2hDlYeK+72DhwEVw+952G7Rp9pr4El3LGlymDiSY2zfP5M3W347julsQsew/gpslDOnWRaRuLBs6Nu38JXFBdDrZgKD/qoLDwyGyKEVbKHEabe0niqmdlPiUtOiFPyXTk3rXuiw0CJ+YkLx33bp2/60hwKvmF1x2uVsIqV2tZZCqbIulhfRHPTEPDjE82t/eb4Oi/gfTNqY+8l8TLpzw1k5pZDM1Vqhr6/M0zZ0VwEE9vGzKeD84m7g7kBgniqtAX3it4rYEU2Z6TU5maeLHMEd6ory0Kz6QMAFIwcGqRh2xueY/Z3GCPqZr+S6AZ4B68U Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Mon, Sep 14, 2026 at 05:27:59AM -0700, Usama Arif wrote: > An architecture that picked a PMD exclusive bit overlapping the swap type > or offset field would otherwise only be caught by data corruption at > runtime. Mirror pte_swap_exclusive_tests() at PMD level. > > Suggested-by: David Hildenbrand (Arm) > Signed-off-by: Usama Arif Reviewed-by: Kiryl Shutsemau (Meta) -- Kiryl Shutsemau / Kirill A. Shutemov