linux-kernel - Re: [mm-unstable PATCH v5 4/8] mm, hwpoison: make unpoison aware of raw error info in hwpoisoned hugepage

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Message-ID: <9e800b26-db85-f8a7-f268-3fb99a748cf1@huawei.com>
Date:   Mon, 11 Jul 2022 19:13:53 +0800
From:   Miaohe Lin <linmiaohe@...wei.com>
To:     HORIGUCHI NAOYA(堀口 直也) 
        <naoya.horiguchi@....com>
CC:     Naoya Horiguchi <naoya.horiguchi@...ux.dev>,
        "linux-mm@...ck.org" <linux-mm@...ck.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        David Hildenbrand <david@...hat.com>,
        Mike Kravetz <mike.kravetz@...cle.com>,
        Liu Shixin <liushixin2@...wei.com>,
        Yang Shi <shy828301@...il.com>,
        Oscar Salvador <osalvador@...e.de>,
        Muchun Song <songmuchun@...edance.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [mm-unstable PATCH v5 4/8] mm, hwpoison: make unpoison aware of
 raw error info in hwpoisoned hugepage

On 2022/7/11 17:24, HORIGUCHI NAOYA(堀口 直也) wrote:
> On Mon, Jul 11, 2022 at 03:09:01PM +0800, Miaohe Lin wrote:
...
> 
> Basically raw_hwp_info is not available to userspace (it might be recorded
> in dmesg but not available via /proc/kpageflags), so unpoisoning error
> subpages one-by-one is sometimes bothering.  If someone would like to
> unpoison one-by-one (I expect nobody would), I can do this.

I see. Many thanks for explanation.

> 
>> Thanks.
> 
> Thank you!
> 
> - Naoya Horiguchi
>