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Mon, 24 Aug 2026 17:53:55 +0000 (GMT) Received: from p1lg14885.dc01.its.hpecorp.net (unknown [10.119.18.236]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by p1lg14879.it.hpe.com (Postfix) with ESMTPS id 7B8D312B74; Mon, 24 Aug 2026 17:53:53 +0000 (UTC) Received: from HPE-5CG20646DK.localdomain (unknown [16.231.227.36]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange ECDHE (P-256) server-signature RSA-PSS (2048 bits) server-digest SHA256) (Client did not present a certificate) by p1lg14885.dc01.its.hpecorp.net (Postfix) with ESMTPS id A30678064A9; Mon, 24 Aug 2026 17:53:49 +0000 (UTC) Date: Mon, 24 Aug 2026 12:53:47 -0500 From: Kyle Meyer To: Shuai Xue Cc: Liam.Howlett@oracle.com, akpm@linux-foundation.org, 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> Precedence: bulk X-Mailing-List: linux-kselftest@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <0d2fc2ab-333e-42a1-88a1-6bb85538cbb0@linux.alibaba.com> X-Authority-Analysis: v=2.4 cv=dLiWXuZb c=1 sm=1 tr=0 ts=6a8c8533 cx=c_pps a=5jkVtQsCUlC8zk5UhkBgHg==:117 a=5jkVtQsCUlC8zk5UhkBgHg==:17 a=kj9zAlcOel0A:10 a=Sv0fKeRqtYgA:10 a=VkNPw1HP01LnGYTKEx00:22 a=gQcMVamqm3wCPoSYhaRC:22 a=NCWKwCw8Xy9Og0ibBRsL:22 a=VwQbUJbxAAAA:8 a=PKP6BQZIvgxffBQvtucA:9 a=CjuIK1q_8ugA:10 X-Proofpoint-ORIG-GUID: oEQ8auz5mVTDJWkWyVM5fQfqFdhNLftA X-Proofpoint-Spam-Info: AW1haW4tMjYwODI0MDE1MCBTYWx0ZWRfX4ZEKKjQBqG2r JmDPrBRa2soGDDoYl9vdLLIgHsINRmOfd/7RaeOuHRU17VZMfsd5HIZ/4Z2tXtvnzrLPelTJrjl ytm7cr9G+IwisruUICOHfpDE1u4YUtA= X-Proofpoint-GUID: oEQ8auz5mVTDJWkWyVM5fQfqFdhNLftA X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwODI0MDE1MCBTYWx0ZWRfX7Z4dDOz4ih0G Kp7146Vx9iJ3V9judH0qkquGXtnapspnIT3NgiIDnwd12A2OlnSEK7mcCw9SyN84AopOcL3urIC 4DJe3mQKs1evHuZBurOPOJ+zcOAHK25zl2iyvNDpQ1zwqxsBu2Fu04xqYsO5RexsFDtqvFx6lml ocFHEZztSrU8R72+8wpssvAiYa3UMRFKbGdpexzqIFo16P03dqCsPADH/0VPt00xarO00S3Ui5O c9AjXZsjTUzHxl0s8s5kKi0CFxFnLqSlH+W2cLaB2gRP2fJqlZOeFjzdIXJ+k+4nEuRPf971YQ4 sYB3aUBEBFms3GmDJijyQdS/0M/MfpTdBE261vsNGiURDBcZia4S1etEqc1NYbJvUUcGOaLog10 ULl+QwZFfH80ztafHu7EGx6+mBq1ZYCpSBE9fUK3ENp3gr1W9ZZVJE3dRLnp9JxgeCZZXsmErCP hjWsnDNtfRJoktXBmEA== X-HPE-SCL: -1 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1176,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-08-24_05,2026-08-24_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 suspectscore=0 phishscore=0 adultscore=0 priorityscore=1501 lowpriorityscore=0 bulkscore=0 malwarescore=0 impostorscore=0 spamscore=0 clxscore=1011 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2608240150 On Thu, Aug 20, 2026 at 11:47:11AM +0800, Shuai Xue wrote: > Hi Kyle, Hi. > Following up on this thread. 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? > 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. Thanks, Kyle Meyer