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Mon, 09 Nov 2026 10:25:12 -0800 (PST) Received: from localhost ([153.61.198.249]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-3b1678d4e49sm436923a91.8.2026.11.09.10.25.11 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 09 Nov 2026 10:25:11 -0800 (PST) Content-Type: text/plain; charset=UTF-8 Date: Mon, 09 Nov 2026 18:25:11 +0000 Message-Id: To: "Tiezhu Yang" , "Vlastimil Babka" , "Harry Yoo" , "Andrew Morton" , "Hao Li" , "Christoph Lameter" , "David Rientjes" , "Roman Gushchin" Cc: , , , Subject: Re: [PATCH v2] mm/slub: Genericize x86-specific cmpxchg16b comment From: "Alexei Starovoitov" In-Reply-To: <20261109035906.10857-1-yangtiezhu@loongson.cn> References: <20261109035906.10857-1-yangtiezhu@loongson.cn> Content-Transfer-Encoding: 8bit X-Archived-By: MIME-Version: 1.0 X-Rspamd-Server: rspam03 X-Rspamd-Queue-Id: EC97E180009 X-Stat-Signature: kzzjxdrj7bs8cd7euzxwu4irsw5bws5x X-Rspam-User: X-Spam-Status: No, score=-2.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_PASS, SPF_PASS autolearn=no autolearn_force=no version=4.0.1 X-HE-Tag: 1794248713-626033 X-HE-Meta: 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 2Uoq2iGM 2nVJ+DowfHFgq6+zk23pfH/yxpDrptTWNPwZ2YDTBzi5YKGFd09dGUy3OILbmTv0a0r0M9ChRL2oZl+uuKq6AfFlA1I5c6p4kAxZZC7VMl6qDt/xRYU0WmsmogdvPlTwN1v89zFYYF2jH6vUrmSfvYJ6JZkr6kWBdNjI8AvpcGemVj43A7SWo08OkVTIymmcgVmgeGYTCryYeKnPohC202rMubfzG0i8iOF3otgzbzuxFE7RwNApxwgpuXVnEo61r76i8LpLEDKrmgfInTa1vc7D8RHOt7PRKFAIwNCtMvr9UNtjRMn+1ntGTCtsHr1ZYmHBgeiVZ36qlMKs5XH8XWn1frvz+u12QWWgsc1l1nKX6refWICXzw76+qJmHIAUOeU3bf0p1PtBYh6E3gFn5MyCxI0cAQXC0a1axovVTwIf1a6sjVrmc0FMN9krFQVR3o/HWAr4nUjH+uJ0/uzhe2z62utHH/j/ARNKR6zNApfvHA7UCmsKcJxC+4MrZN6JgoCL9k7Uccy6Rbi0= Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: X-Spam-Checker-Version: SpamAssassin 4.0.1 (2024-03-26) on aws-us-west-2-korg-listserv-alma10-1 On Sun, Nov 08, 2026 at 07:59 PM Tiezhu Yang wrote: > atomic primitive is satisfied by different hardware implementations: > (1) arm64: satisfies it via LSE atomics ('casp' instruction) [...] > Update the comment to "double-width atomic cmpxchg", which provides the > following advantages: > (1) Accurately describes the cross-platform hardware invariant. You ignored Hao's point about shorter commit logs. I dropped all of your pending patches. pw-bot: cr