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Tue, 15 Sep 2026 00:57:05 +0000 (UTC) Date: Mon, 14 Sep 2026 19:57:03 -0500 From: Kyle Meyer To: Andrew Morton Cc: corbet@lwn.net, david@redhat.com, linmiaohe@huawei.com, shuah@kernel.org, tony.luck@intel.com, jane.chu@oracle.com, jiaqiyan@google.com, Liam.Howlett@oracle.com, bp@alien8.de, hannes@cmpxchg.org, jack@suse.cz, joel.granados@kernel.org, laoar.shao@gmail.com, 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, surenb@google.com, vbabka@suse.cz, linux-acpi@vger.kernel.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-mm@kvack.org Subject: Re: [PATCH v3] mm/memory-failure: Support disabling soft offline for HugeTLB pages Message-ID: References: <20260914173700.346dc533f1f21ef170b7722f@linux-foundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260914173700.346dc533f1f21ef170b7722f@linux-foundation.org> X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwOTE1MDAxMCBTYWx0ZWRfX1J48re0Pg76+ isfei2rI9AQNEKpzmp0oGGQ7+UgNmRXG6g8gKGs2bzMjqbPzityDM73+bGjAhzPS7KlFCRTCd6j QEblYzHBFdNln+P8vYgR6jBTU38dP7nj6rvUn3bMbYb8CRJo1k+YIt5PaeCLeHORqzXQOxOuBrO I8e93cWpAPEWJNzwwrwrz2az0ri83aYEgZ8crHhfDN9frN75ABYbJ+xDz80Xw/eBo1oxSUFC+Vz mhelffqylCDlX0b/AXClyQzByaSWykcB4IQ32kZVL1g1P/GP16ZXC6MhHKJW6YZorpvib3ebP8n ucJmktJ/5oVpXLCDQ1rpCzsSbpqx5VrDiQ22zMz2u7LB0I8m1CdoOEzEApVT4mKgUIWwFEwJ41f YpvNg/IZtZe8dbRFuYIUda9LA5pMXFFSFa7NC5ALQ8Iw8bF7+wcL/XvdVowuMIeBT/8idp1S1Oc 0BqsyKKMAIbzqutDtvA== X-Authority-Analysis: v=2.4 cv=LKbz05W9 c=1 sm=1 tr=0 ts=6aa897e7 cx=c_pps a=FAnPgvRYq/vnBSvlTDCQOQ==:117 a=FAnPgvRYq/vnBSvlTDCQOQ==:17 a=kj9zAlcOel0A:10 a=VdqzKS8jKosA:10 a=VkNPw1HP01LnGYTKEx00:22 a=gQcMVamqm3wCPoSYhaRC:22 a=ModqzXLkJJ0tFyq98apW:22 a=VwQbUJbxAAAA:8 a=MvuuwTCpAAAA:8 a=QyXUC8HyAAAA:8 a=8QjRa3sHNxljrvLfDkgA:9 a=CjuIK1q_8ugA:10 X-Proofpoint-ORIG-GUID: r2HkFnvshq4dFtHu-OxLp914XimHte7n X-Proofpoint-Spam-Info: AW1haW4tMjYwOTE1MDAxMCBTYWx0ZWRfX/uPv4lyY3U70 +n+WkuZ7wkaUjohP3ln1OA8ZTlhbOl5UdaLjpEvIfoodrGnwjaYFQsQPhtK/bFJW9pReige7eOf Bef4U7tldSqIwBnAlrNfoL7YPykIIto= X-Proofpoint-GUID: r2HkFnvshq4dFtHu-OxLp914XimHte7n 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=2026-09-14_05,2026-09-14_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 malwarescore=0 suspectscore=0 adultscore=0 lowpriorityscore=0 priorityscore=1501 spamscore=0 impostorscore=0 bulkscore=0 clxscore=1015 phishscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2609040000 definitions=main-2609150010 X-Rspamd-Server: rspam12 X-Rspamd-Queue-Id: D39FB140007 X-Rspam-User: X-Stat-Signature: uhtnkx5zairqb4hc494oh3xeyeaj5ean X-HE-Tag: 1789433857-823609 X-HE-Meta: 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 tRIb2Y0e gpkilyxA6v10A0fjFq6bBrUsheHBaM4+gUr/iaKBUkyFbBnZCz++mVX4fqpNqydg7TaJSpTJ8y3uveDzLTetuCWBLxnVoZoh9sNdau2KuO9kLPP3Nd1upIvfmt3lVZ133tfbEa0LAcyD7zf8v6HiuogBsOKtEv8WkK7HOkpzouxrEYzTk6xJHY7NpIILvAinIvby5nBU6UVLxWWO+OIXR54AZZwASkk9kWzlQ6VwgQv8bSRXF5UkEMsjX5Jo1mS9U6qmrQ5iHMq27Bk4CGlltA9sBEgXD+pr25bucZmNyBKiLeJPGgc74TZDI9iYd7FdDbKMR/b/mSzAXTSm8xh/PK7mxP2GwrkCJkwtMSNUM/X+ZGzJeXPuYwXB0uyRtS0nuGbbY Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Mon, Sep 14, 2026 at 05:37:00PM -0700, Andrew Morton wrote: > On Mon, 14 Sep 2026 18:49:38 -0500 Kyle Meyer wrote: [...] > I'm hitting some rejects against > https://lore.kernel.org/20260825085756.63030-4-husong@kylinos.cn . > Please update this against mm.git's mm-unstalbe branch or linux-next. Sure, I'll send a v4. > I'd updated v2's changelog with this: > > > Tony said: > > : Recap of original problem is that some BIOS keep track of error > : threshold per-rank and use this GHES mechanism to report threshold > : exceeded on the rank. > : > : Systems that stay up a long time can accumulate enough soft errors to > : trigger this threshold. But the action of taking a page offline isn't > : going to help. For a 4K page this is merely annoying. For 1G page it > : can mess things up badly. > : > : My original patch for this just skipped the GHES->offline process for > : huge pages. But I wasn't aware of the sysctl control. That provides a > : better solution. > > Which is cumbersome but I think there's useful info here so please > incorporate in some way. OK, thank you. > > Suggested-by: Tony Luck > > Signed-off-by: Kyle Meyer > > v2 had > > Reported-by: Shawn Fan > > which got lost. checkpatch.pl complained about a missing "Closes: or Link:" and I don't have a pointer to report, but I'll add that back to v4.