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Mon, 24 Aug 2026 18:31:17 +0000 (UTC) Date: Mon, 24 Aug 2026 13:31:15 -0500 From: Kyle Meyer To: Andrew Morton Cc: Shuai Xue , Liam.Howlett@oracle.com, bp@alien8.de, corbet@lwn.net, david@redhat.com, hannes@cmpxchg.org, jack@suse.cz, jane.chu@oracle.com, jiaqiyan@google.com, joel.granados@kernel.org, laoar.shao@gmail.com, linmiaohe@huawei.com, linux-acpi@vger.kernel.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-mm@kvack.org, lorenzo.stoakes@oracle.com, mclapinski@google.com, mhocko@suse.com, nao.horiguchi@gmail.com, osalvador@suse.de, rafael.j.wysocki@intel.com, rppt@kernel.org, russ.anderson@hpe.com, shawn.fan@intel.com, shuah@kernel.org, surenb@google.com, tony.luck@intel.com, vbabka@suse.cz Subject: Re: [PATCH v2] mm/memory-failure: Support disabling soft offline for HugeTLB pages Message-ID: References: <0d2fc2ab-333e-42a1-88a1-6bb85538cbb0@linux.alibaba.com> <20260824112005.856732bac3094b62a430d17c@linux-foundation.org> MIME-Version: 1.0 Content-Type: text/plain; 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The v2 patch once landed in akpm's mm > > > tree (9ae6eefa4b6b "mm/memory-failure: support disabling soft > > > offline for HugeTLB pages"), but that commit is now not reachable > > > from any branch, and mainline as of v7.3-rc1 still only has the 0/1 > > > switch in /proc/sys/vm/enable_soft_offline. > > > > Thanks for pointing this out. > > > > Looks like this patch was added on 2025-09-16 [1] and dropped on 2025-11-11 [2]. > > > > [1] https://lore.kernel.org/all/20250916032512.AE588C4CEEB@smtp.kernel.org > > [2] https://lore.kernel.org/all/20251111231818.52A60C16AAE@smtp.kernel.org > > > > I must have missed the second email. > > > > I don't remember discussing a v3. Can someone please remind me what we planned > > to change or whether there was another reason it was dropped? > > I interpreted the (lengthy) review discussion to mean that a new > version was to be sent out. > > > > The underlying issue discussed here is still unresolved for us: > > > firmware reporting per-rank corrected error thresholds via GHES > > > triggers soft offline of huge pages, which neither addresses the > > > failing rank nor is acceptable for workloads that rely on stable > > > hugetlb physical layouts. > > > > > > Do you still plan to send a v3, e.g. with the disable-bitmask > > > layout Anshuman suggested upthread? > > > > I wasn't planning on sending a v3 but I'm happy to revisit if needed. > > That would be best at this stage - please review the changelog to see > if additional details should be added to cover the considerations which > were discussed. Thank you for the clarification. I'll review everything and send a v3. Thanks, Kyle Meyer