From: Yuanhe Shu <xiangzao@linux.alibaba.com>
To: "Garg, Shivank" <shivankg@amd.com>
Cc: akpm@linux-foundation.org, david@kernel.org, "Huang,
Ying" <ying.huang@linux.alibaba.com>,
"Kaitao Cheng" <kaitao.cheng@linux.dev>,
vbabka@kernel.org, ljs@kernel.org, liam@infradead.org,
rppt@kernel.org, surenb@google.com, mhocko@suse.com,
linmiaohe@huawei.com, nao.horiguchi@gmail.com, ziy@nvidia.com,
wangkefeng.wang@huawei.com, tujinjiang@huawei.com,
mgorman@techsingularity.net, chengkaitao@kylinos.cn,
muchun.song@linux.dev, linux-mm@kvack.org,
linux-kernel@vger.kernel.org, xiangzao@linux.alibaba.com
Subject: Re: [PATCH] mm/highmem: refuse to copy hwpoisoned folios in the !copy_mc fallbacks
Date: Tue, 27 Oct 2026 20:20:51 +0800 [thread overview]
Message-ID: <20261027122051.1234963-1-xiangzao@linux.alibaba.com> (raw)
In-Reply-To: <d1de051d8c3150df7dd0b963a51176e5221a2006.camel@amd.com>
On 10/26/26 12:10, Garg, Shivank wrote:
> Should we use is_page_hwpoison() instead? It looks simpler and more
> reliable.
Agreed. The next version checks is_page_hwpoison(from) before
and after the copy, so the race is refused at the first check and a
flag landing during the copy at the second.
--
Yuanhe
prev parent reply other threads:[~2026-10-27 12:21 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-10-26 2:57 Yuanhe Shu
2026-10-26 9:55 ` David Hildenbrand (Arm)
2026-10-27 12:13 ` Yuanhe Shu
2026-10-26 11:21 ` Huang, Ying
2026-10-26 12:17 ` Garg, Shivank
2026-10-27 1:33 ` Huang, Ying
2026-10-27 1:40 ` Huang, Ying
2026-10-27 12:14 ` Yuanhe Shu
2026-10-26 12:09 ` Garg, Shivank
2026-10-27 12:20 ` Yuanhe Shu [this message]
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