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AJvYcCVhKWBr9eUTGNplubilH4sKtKzUlsQeOLcpKTD9JqaBkALCiC1Qc8k4oRy+VKYVQ/owvJJqz349Ug==@kvack.org X-Gm-Message-State: AOJu0Yxgr80IjVvE/9yk2QOCvUdHmqL6+GYF+LLs8ZbADIRqPiLjx6Nc zQipT7MauENspK3axn3h1KnkqEa8DbnqIc0YGh/Pu4BmwTQ/1keupn78Ioi6JsheqmLsW4qTtU4 buatHI1gLkqG7n9qsN6mSy3fGm20Oy7o= X-Gm-Gg: AY/fxX7j/iwpLjtZJuxoPIbJ8jBJGgSERGzaUJolNhMJU+JshR4PMmicP881r64VmtM Kz8I6FjxZxb7QJmgh+dZXOu8Y44CgWNAPANlapuTfOZLlOuTPGwWi0RbKTPQH1SpHagP5y2zi17 NnVHpgEOi0pVvQnCrNJaNCJkhAS7bp8PqOc1qMMHIRv/2RhFCIX/dPkCK9+3xPnB/oIS17WE8Zm 4HbFH8nf47c4tU3WsI+sylYCBmO7Sx3cGpe5/90XwI3Nn7AcPFUxXI84o82iJCpRxP9GmElv2ZH N2GVJrM= X-Google-Smtp-Source: AGHT+IF4cUwUcAv2slzqJcuj/I6eRah1Eq40JyNFo5eIt+T/iEHNR/b7lKndSa7QV1+mko7uZ5hDHO1628GB6HSba4g= X-Received: by 2002:a17:907:962a:b0:b83:2af7:372a with SMTP id a640c23a62f3a-b832af73869mr1428183366b.41.1767081916908; Tue, 30 Dec 2025 00:05:16 -0800 (PST) MIME-Version: 1.0 References: <20251225094057.286954-1-wale.zhang.ftd@gmail.com> In-Reply-To: From: wale zhang Date: Tue, 30 Dec 2025 16:05:04 +0800 X-Gm-Features: AQt7F2ogVOs76D0YXE_GIhC7pYhD1LHahrzZOO57-qjHBviaosudg0-kBbayvnA Message-ID: Subject: Re: [PATCH 1/1] mm,swapops: Fix compile error on set_pmd_migration_entry. To: Matthew Wilcox Cc: Barry Song <21cnbao@gmail.com>, akpm@linux-foundation.org, lorenzo.stoakes@oracle.com, chrisl@kernel.org, linux-mm@kvack.org Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Rspam-User: X-Rspamd-Queue-Id: D799640017 X-Rspamd-Server: rspam04 X-Stat-Signature: reonk7fxbi391isy9c1b34qkm6qcb75n X-HE-Tag: 1767081918-664926 X-HE-Meta: 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 IJ0qMZma mpCIGwancro0ReHyymPJFb7/yvJ6vGf7DzbFrNrItCGlw2zAi7IRGNKYz3Brtzu9oVMSpYH9oyTzYIQR2YLB71AJKvbtUAtxlFNz3WO/4V+a/E3KecG7S6/mwntISXeV2Al40FnYm/+SO55LJ91vjPaPqieLrDAhQY7VMEy129r0C5wBpAhyWmVUJlJcaf6FjuKGgHDvbu2mVcvZ494JgpIxxi35wflwhWrzIyiuOo+9IsGD27JnjP9kuEQqtWbYe6KAwXKsdMi1YMz/gX1/DiZ79emWgVH3SXFYtNvaTB1QLXL3I6DVFzPSD0Vw6dzdfOT5y7SSB4WxVZabH7DWjWkRft8KZV8PgrPsNoC3a2Al6h3i04+RZ9vUqPHxU6digDlbuu8coHL5BTkBJnQR+GqrUTvVE9nFQtZSEL6XzLYajzU3J6B2OaJC3W9Wysf1gyixdKwmVq0K1VnxZkgtAtZ7ls/4XRwRyAuUVEn56bSPUpWg= X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Tue, Dec 30, 2025 at 1:00=E2=80=AFPM Matthew Wilcox wrote: > > On Fri, Dec 26, 2025 at 07:45:48PM +0800, wale zhang wrote: > > I compile the 6.19-rc2 for arm64 with -O0, this kind of error log will = appear. > > I don't think we support compilation with -O0. Why did you think this > would work, and why did you think this was a good idea? Hello Matthew, Compilation with -O0 is mainly for beginners to learn and debug. I don't want to encounter the same problems every time I pull the latest code. Perhaps other people will also encounter the same problem. And I see that include/linux/pgtable.h has the same usage. 320 static inline int pmdp_set_access_flags(struct vm_area_struct *vma, 321 unsigned long address, pmd_t *= pmdp, 322 pmd_t entry, int dirty) 323 { 324 BUILD_BUG(); 325 return 0; 326 } Thanks Wale