linux-kernel - Re: [PATCH v13 06/12] mm: hugetlb: set the PageHWPoison to the raw error page

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Date:   Sun, 24 Jan 2021 16:06:14 -0800 (PST)
From:   David Rientjes <rientjes@...gle.com>
To:     Muchun Song <songmuchun@...edance.com>
cc:     corbet@....net, mike.kravetz@...cle.com, tglx@...utronix.de,
        mingo@...hat.com, bp@...en8.de, x86@...nel.org, hpa@...or.com,
        dave.hansen@...ux.intel.com, luto@...nel.org, peterz@...radead.org,
        viro@...iv.linux.org.uk, akpm@...ux-foundation.org,
        paulmck@...nel.org, mchehab+huawei@...nel.org,
        pawan.kumar.gupta@...ux.intel.com, rdunlap@...radead.org,
        oneukum@...e.com, anshuman.khandual@....com, jroedel@...e.de,
        almasrymina@...gle.com, willy@...radead.org, osalvador@...e.de,
        mhocko@...e.com, song.bao.hua@...ilicon.com, david@...hat.com,
        naoya.horiguchi@....com, duanxiongchun@...edance.com,
        linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org,
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Subject: Re: [PATCH v13 06/12] mm: hugetlb: set the PageHWPoison to the raw
 error page

On Sun, 17 Jan 2021, Muchun Song wrote:

> Because we reuse the first tail vmemmap page frame and remap it
> with read-only, we cannot set the PageHWPosion on a tail page.
> So we can use the head[4].private to record the real error page
> index and set the raw error page PageHWPoison later.
> 
> Signed-off-by: Muchun Song <songmuchun@...edance.com>
> Reviewed-by: Oscar Salvador <osalvador@...e.de>

Acked-by: David Rientjes <rientjes@...gle.com>