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From: Miaohe Lin <linmiaohe@huawei.com>
To: Jane Chu <jane.chu@oracle.com>, <nao.horiguchi@gmail.com>,
	<akpm@linux-foundation.org>, <linux-mm@kvack.org>,
	<linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 3/3] mm/memory-failure: send SIGBUS in the event of thp split fail
Date: Wed, 8 May 2024 17:03:19 +0800	[thread overview]
Message-ID: <2e51deff-24ca-32d5-dbd2-9077f860723c@huawei.com> (raw)
In-Reply-To: <20240501232458.3919593-4-jane.chu@oracle.com>

On 2024/5/2 7:24, Jane Chu wrote:
> When handle hwpoison in a GUP longterm pin'ed thp page,
> try_to_split_thp_page() will fail. And at this point, there is little else
> the kernel could do except sending a SIGBUS to the user process, thus
> give it a chance to recover.

It seems the user process will still receive SIGBUS via kill_accessing_process()
when (re-)access thp later. So they should have a chance to recover already.
Or am I miss something?

Thanks.
.



  parent reply	other threads:[~2024-05-08  9:03 UTC|newest]

Thread overview: 26+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-05-01 23:24 [PATCH 0/3] Enhance soft hwpoison handling and injection Jane Chu
2024-05-01 23:24 ` [PATCH 1/3] mm/memory-failure: try to send SIGBUS even if unmap failed Jane Chu
2024-05-07  9:02   ` Oscar Salvador
2024-05-07 17:54     ` Jane Chu
2024-05-08 12:06       ` Oscar Salvador
2024-05-08 16:51         ` Jane Chu
2024-05-08  7:47   ` Miaohe Lin
2024-05-08 16:58     ` Jane Chu
2024-05-09  2:54   ` Miaohe Lin
2024-05-09 16:40     ` Jane Chu
2024-05-01 23:24 ` [PATCH 2/3] mm/madvise: Add MF_ACTION_REQUIRED to madvise(MADV_HWPOISON) Jane Chu
2024-05-05  7:02   ` Miaohe Lin
2024-05-06 19:54     ` Jane Chu
2024-05-08  7:58       ` Miaohe Lin
2024-05-01 23:24 ` [PATCH 3/3] mm/memory-failure: send SIGBUS in the event of thp split fail Jane Chu
2024-05-05  7:00   ` Miaohe Lin
2024-05-06 20:26     ` Jane Chu
2024-05-08  8:08       ` Miaohe Lin
2024-05-08 17:45         ` Jane Chu
2024-05-09  8:30           ` Miaohe Lin
2024-05-09 15:34             ` Jane Chu
2024-05-10  2:59               ` Miaohe Lin
2024-05-10  3:18                 ` Jane Chu
2024-05-08  9:03   ` Miaohe Lin [this message]
2024-05-08 16:56     ` Jane Chu
2024-05-09  8:52       ` Miaohe Lin

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