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b=osZkmIX6YUKuwxY38slNqvBsWiQNDNxPYCj5qqGQ4/Y0pIrfMjifzx2/z1f3HyXhl ng0Q3tf+dsU4N5U2fYavdTK07+pIPx1hx2EwST2/ucqvwUPiztEz2uJuR6llK7L0dA dKWV1SJ6myQMp1gilTQ8o4ZIB0AF/eI82D+iSpKAy1A8YUC7O9hy4Ubznuma96NwcU BMqSl95kS3NaXdM2gzDn9mlJki3nb8lHZq/BETAikNcwt8J51xpTCMzB8cumyxw7e8 w0jUptWrHwj0fzNIdaFWUT8g4HLu+IRYhyLmYnXwjzfIfEJMi/fipBiMli07B/ltRb OPf9hXUNswKjA== Date: Thu, 13 Aug 2026 10:25:55 +0100 From: "Lorenzo Stoakes (ARM)" To: Mike Rapoport Cc: Xie Yuanbin , akpm@linux-foundation.org, david@kernel.org, linmiaohe@huawei.com, ziy@nvidia.com, matthew.brost@intel.com, joshua.hahnjy@gmail.com, rakie.kim@sk.com, byungchul@sk.com, ying.huang@linux.alibaba.com, apopple@nvidia.com, nao.horiguchi@gmail.com, liam@infradead.org, vbabka@kernel.org, surenb@google.com, mhocko@suse.com, gourry@gourry.net, tony.luck@intel.com, bp@alien8.de, linux-mm@kvack.org, linux-kernel@vger.kernel.org, liaohua4@huawei.com, lilinjie8@huawei.com Subject: Re: [PATCH] mm/Kconfig: allow user to select MIGRATION if MEMORY_FAILURE is enabled Message-ID: References: <20260812091644.224299-1-xieyuanbin1@huawei.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-Rspamd-Server: rspam02 X-Rspamd-Queue-Id: 8AEB21C0003 X-Stat-Signature: pcxiu57acsay35f338akbjbe6ooprsun X-Rspam-User: X-HE-Tag: 1786613179-887734 X-HE-Meta: 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 PyThBmhK LDZIgDWgc2WVRYfM/JnqZgMpy0IeZeBYr/5Byo7jBkg3MoDvuwBfCeN0pgFk5W8quH+cJymDuRzN2oZwz24mbqSn8STJK/nx+zWL7cVQCXb/MNGjYH0KeivjP0r5jGN2IsybrxMz6ZOmw4ylzrmGo56ggCE9K5U5ILY517VPTmWl6oSVUc76BDRUXeFpEdpsKNNEjrnc8SNk62AbX/s51KL9Cb7+7gY3AuFYxhGofz7sR+Vg942gWGLfORn4RWLeYevGpTjVov0VCQKkQbS19j3JZ9caiOOPcvZbZxKY5XsvOgY+7kdi5UpK8PcI2GNDPqzfnXOrrnUJwrrFwaE5kzOHujLuI+qE0/PZ2dDg41Vc48H7oohB3r8IR6g== Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Wed, Aug 12, 2026 at 04:32:12PM +0300, Mike Rapoport wrote: > On Wed, Aug 12, 2026 at 11:55:03AM +0100, Lorenzo Stoakes (ARM) wrote: > > On Wed, Aug 12, 2026 at 01:45:30PM +0300, Mike Rapoport wrote: > > > Hi, > > > > > > On Wed, Aug 12, 2026 at 05:16:44PM +0800, Xie Yuanbin wrote: > > > > Currently, memory-failure can be enabled without migration. However, > > > > migration cannot be selected by user when memory-failure is enabled. > > > > > > > > Migration is very useful for soft_offline_page(), which may be triggered > > > > by correctable memory errors. Most of the anonymous or file-mapping > > > > faulty pages can be migrated to other healthy pages. > > > > > > > > Allow user to select MIGRATION if MEMORY_FAILURE is enabled. > > > > Also, select MIGRATION by default if MEMORY_FAILURE is enabled. > > > > > > Do we want to make users decide if they need MIGRATION when MEMORY_FAILURE > > > is enabled? > > > > > > Just make MEMORY_FAILURE select MIGRATION. > > > > NO. > > > > Explain first why the hell one of the other options that selection migration > > can't be enabled. > > Think small systems ;-P That need soft offline and migration?... -- Cheers, Lorenzo