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b=Bv04nU+GCcvZ0I3TDl+lXX0Umk3HGpaRkK3sLrCS/6z39CxrJ5g5JHaqLf+MXSsPn UCZJ9Ol0nVO5D3jw14aCQFQjwIw2W7iww4c+56t3bwiHxPQlltWm55gY2q2tuOAMyX OKFWme44nfsxF3E2c1Sp/BqPvfyPldNguLC+JoRm1GCygjX5duDvdBx9qIJovnsWSD 7CsoCjtOO0Cax9vZ/9uVFNFfk1zaOguH0tI7/ifkXSEU+1bMTfN0/VOX0Kho+/SveX ZWrbBy71n2q5muP872XbXx9N0lzN7pXxvZ/oqQc8Eo3OJVEabbwUzg7lGnXUWkwsym 4AyXiGf1Lh3tg== Message-ID: <87792b57-8f05-401f-a597-9d7610c629dc@kernel.org> Date: Wed, 15 Apr 2026 12:31:46 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [RFC V1 05/16] arm64/mm: Convert READ_ONCE() as pmdp_get() while accessing PMD To: Anshuman Khandual , linux-arm-kernel@lists.infradead.org Cc: Catalin Marinas , Will Deacon , Ryan Roberts , Mark Rutland , Lorenzo Stoakes , Andrew Morton , Mike Rapoport , Linu Cherian , linux-kernel@vger.kernel.org, linux-mm@kvack.org, kasan-dev@googlegroups.com References: <20260224051153.3150613-1-anshuman.khandual@arm.com> <20260224051153.3150613-6-anshuman.khandual@arm.com> <628a1d9b-cc16-4cf6-8c19-b6ed49af8492@kernel.org> <8a3849cc-e6d3-4932-865f-476a137f891a@arm.com> From: "David Hildenbrand (Arm)" Content-Language: en-US Autocrypt: addr=david@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 7bit X-Rspamd-Server: rspam12 X-Stat-Signature: wqub9pe5s65fmwyrugxgby6jtp9r5gbd X-Rspamd-Queue-Id: 2FB641A000B X-Rspam-User: X-HE-Tag: 1776249114-146022 X-HE-Meta: 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 hp+vIWVG TNpq9MoPyfvuJRGolFeUILlmd4Fx/iEWNmLclk6OWrDwlQhnEfNVyfQN9UM7lieuYlwRS7fgrc+DmeiV8GmcPfotPf5oy+5a1QUgd28XkgtDaymuTzzyOrxOW0MaHtpA8Vw9sJ4JACkN6ZelePJIhTt7G2psmbj+//ab7GWqZ4xQ55fuRlMN2Kj3dnCwNUZTh7Ksya5snuTdAgHYLFGBMeexNZzcluoKL4eKM9NYsQBB8eHw/6OJUbOf1fkMDtgOCj5YwsOvyqTkpW91Fw4pIzr3ghh6OE/dgBHBKszXqT9LaDtANiM7PJoEn3g== Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On 4/10/26 06:48, Anshuman Khandual wrote: > > > On 08/04/26 5:41 PM, David Hildenbrand (Arm) wrote: >> On 2/24/26 06:11, Anshuman Khandual wrote: >>> Convert all READ_ONCE() based PMD accesses as pmdp_get() instead which will >>> support both D64 and D128 translation regime going forward. >> >> You should mention the move from pmdp_test_and_clear_young(), and why it >> is performed. > > Sure will do that. Actually there as a build problem while accessing > pmdp_get() from pmdp_test_and_clear_young() while being inside the > header which necessitated this move. Could that be resolved while keeping the files in the header? -- Cheers, David