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b=D97O1w5ysWxeGP7GcN3ChbzY+zPak2gSdq6xrWTDtQeR5AWCHEw8wkP+Vg/t5LFt6 ap42mjvw6UvD1y8evOqk9IL5Xv3v3Zel/SmtKXfnbZnYx8MaBYspUWulwAri/4KOA9 TUmh3YJiqY+SJ51dSWE7hRmVDXlVB+vFbOhMImsDY0NqDcCvCZ5wzVMvWY3cpo02zJ HanYvjFWPsQX7N4wfX/iB8N8zTIkHc9pKXudi0++KNxAwQOVjTIFZz+Xrwb+M8X8Bf hYQtAow41nfWTr0jb1GUxgkt6kNO4By0T64Sh+w/RsqXKNBr7k26wUB95m60y0wAPS iFlpo1At1gmXw== Message-ID: Date: Wed, 15 Apr 2026 12:32:26 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [RFC V1 06/16] arm64/mm: Convert READ_ONCE() as pudp_get() while accessing PUD 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> <20260224051153.3150613-7-anshuman.khandual@arm.com> <6d91c17f-2027-482a-b0b2-98ad258f1687@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-Rspam-User: X-Stat-Signature: gd9r6f36e53wiburo1cwyfukfd755ahj X-Rspamd-Queue-Id: B1457180003 X-Rspamd-Server: rspam09 X-HE-Tag: 1776249153-461185 X-HE-Meta: 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 N/Rg7yqp 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 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On 4/10/26 06:50, Anshuman Khandual wrote: > > > On 08/04/26 5:45 PM, David Hildenbrand (Arm) wrote: >> On 2/24/26 06:11, Anshuman Khandual wrote: >>> Convert all READ_ONCE() based PUD accesses as pudp_get() instead which will >>> support both D64 and D128 translation regime going forward. >>> >>> Cc: Catalin Marinas >>> Cc: Will Deacon >>> Cc: Ryan Roberts >>> Cc: Mark Rutland >>> Cc: linux-arm-kernel@lists.infradead.org >>> Cc: linux-kernel@vger.kernel.org >>> Cc: kasan-dev@googlegroups.com >>> Signed-off-by: Anshuman Khandual >>> --- >> >> I was wondering for a second whether it would be better to structure >> this as "convert READ_ONCE to use pxxxp_get() in fault.c" instead, >> essentially, to touch each file only once. > > But will not that create too many patches ? Good for your patch count? :) -- Cheers, David