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h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=uJO/NSPwv6i1UphGcwTSZJ6nX2IfgfWmiJvtlQQGGrD8WgwEUXr0blhXQzi0yurXx SfVHkZTryrdUqUzj7FHHz8RrLGu823kX07BHyaae8XpbMWbPLosXo30EVBHgKz7L6H /m152kwkgTT3Hlh6bapGhDb2PzWrf9b/rML9ZcWg= Message-ID: <93e3ea2e-336b-4cb3-8be4-efdb353ff236@arm.com> Date: Tue, 23 Jun 2026 16:34:27 +0530 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v4 00/12] Optimize anonymous large folio unmapping To: "David Hildenbrand (Arm)" , akpm@linux-foundation.org, ljs@kernel.org, chrisl@kernel.org, kasong@tencent.com, hughd@google.com, liam@infradead.org Cc: riel@surriel.com, vbabka@kernel.org, harry@kernel.org, jannh@google.com, linux-mm@kvack.org, linux-kernel@vger.kernel.org, rppt@kernel.org, surenb@google.com, mhocko@suse.com, qi.zheng@linux.dev, shakeel.butt@linux.dev, baohua@kernel.org, axelrasmussen@google.com, yuanchu@google.com, weixugc@google.com, shikemeng@huaweicloud.com, nphamcs@gmail.com, bhe@redhat.com, youngjun.park@lge.com, baolin.wang@linux.alibaba.com, pfalcato@suse.de, ryan.roberts@arm.com, anshuman.khandual@arm.com References: <20260526063635.61721-1-dev.jain@arm.com> <39e1a740-1126-47d0-b5dd-d711c04c6af0@kernel.org> Content-Language: en-US From: Dev Jain In-Reply-To: <39e1a740-1126-47d0-b5dd-d711c04c6af0@kernel.org> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Rspam-User: X-Stat-Signature: 551jwmxspdz3gm153ukhmicj8xthyey9 X-Rspamd-Queue-Id: 6296840014 X-Rspamd-Server: rspam06 X-HE-Tag: 1782212679-854800 X-HE-Meta: U2FsdGVkX1+aNzaVAMdKDa/oq3H/cPqMm3zV5xyHB+PWR/3A9ekTOuqqUO3xScPgOYpuZjeJ3Tem8IMUjmfnj4wfd4vzzDF849iXEqbyOQXZHC73DeT2IAsC6XCmqSEhL0cnHXOCoQjb7I8z3/hbKbADU/oJKKDZrgdZ3LuI7gFL6feGgB6lIljEysxe/040w4XzCVNvhn8dXyw/sDG8onPPJdi5pigdo6sKeCYA6fO3uBrXi/4sm71yxhfnmISrhhhZ6l8Cv+Zcop/YemJoE8AJPR1Wkk3tsEdUV0iqX/w4sgyCDszd9Yev//pmnONgKZz3d9f+B5jOOP68QIafQb7i/ZW6MCrxKOxaTyp6lnvEEcyuBUgL9/JrlRg2v3hiO7gHKZxqA/7EVNj/hO4QluULqcGkQNocrhCLeWQKxv5CL8qpQaEtjZMv3+8AGDrw+bRZd5lnIQhxUH5WgMNkwpmh/VfCQc6v092DfCf9n9EXId9s/xHQSsx4XGZRROsn56pvGWDCvGZ6in+8JV+1kpW9Mc6J+6nlQT7H4K3w9aJ5lWvJJFD2+CFbIdNATKowp0QARMhKRfjYfy6JhduoQDLMC7MufcNhrAOm9/dkJvzeW503xDKVYXZUekAL2nvpfLBXidwOZOINHx0TnTE4JLROVOuMu82D5LUu5Bi67ayvS3tAvI89OLXTwXe+BbDEGtTpfTqq1aPtT20evGU2WeQGnBcC0WhPktZz4KLrRqZhnbbphud7fVT1zrQk04ug5i3ni2mPIo1zhRpQ9f4KT54ba/iZTvpo3Qfj5oNAcyirMktsd1tq00WtyMWGtB7TupG8xBx/omlnZq8OF+Ku+61JVxHeEq3Zc10GBmFvHZU8EYgiSoc2Mi2TnQUZOSpikySFUzo6p6LoWFPGKYX+jfKlA6tT3eU9E/4fJH7XtuEsjPWGt87rmLwsnyFhvo9FKPuUSJboAX3GB1+gM8B QbjFYvZV kSyCGBEilccFNnnCK0kRsNeguoAQpEAS7s01zGXISBnEAKnUdf7LjPr6RpOP7/51tYbp7TTpdEZ7sr4mZN1IuIQg3DZZWxd17FC0xWf08jUbcAyvDZW/ZFKp9qicGbcDOwToaASOZpjvQoYr5jHEZ2EKPgQ3Gl0h6z5iIeyeAsj5ZWVqDMrz8UdrbudrUfvVd4ADeMT/lhXz7Z0VU5bomYsHh/+hZk8DHZLAI5/KJKd1e/XY= Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On 09/06/26 7:48 pm, David Hildenbrand (Arm) wrote: > On 5/26/26 08:36, Dev Jain wrote: >> Speed up unmapping of anonymous large folios by clearing the ptes, and >> setting swap ptes, in one go. >> >> The following benchmark (stolen from Barry at [1]) is used to measure the >> time taken to swapout 256M worth of memory backed by 64K large folios: > > I suggest sending out patch #1->#3 ahead of times as separate cleanups, so we > get more targeted review for them. Okay I will do this. >