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

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Message-ID: <CAMZfGtW5S42rPtOJexNv+Zf2S-J0kG8T1KpWS_ozQb2eG-YH0A@mail.gmail.com>
Date:   Mon, 25 Jan 2021 13:06:44 +0800
From:   Muchun Song <songmuchun@...edance.com>
To:     David Rientjes <rientjes@...gle.com>
Cc:     Jonathan Corbet <corbet@....net>,
        Mike Kravetz <mike.kravetz@...cle.com>,
        Thomas Gleixner <tglx@...utronix.de>, mingo@...hat.com,
        bp@...en8.de, x86@...nel.org, hpa@...or.com,
        dave.hansen@...ux.intel.com, luto@...nel.org,
        Peter Zijlstra <peterz@...radead.org>, viro@...iv.linux.org.uk,
        Andrew Morton <akpm@...ux-foundation.org>, paulmck@...nel.org,
        mchehab+huawei@...nel.org, pawan.kumar.gupta@...ux.intel.com,
        Randy Dunlap <rdunlap@...radead.org>, oneukum@...e.com,
        anshuman.khandual@....com, jroedel@...e.de,
        Mina Almasry <almasrymina@...gle.com>,
        Matthew Wilcox <willy@...radead.org>,
        Oscar Salvador <osalvador@...e.de>,
        Michal Hocko <mhocko@...e.com>,
        "Song Bao Hua (Barry Song)" <song.bao.hua@...ilicon.com>,
        David Hildenbrand <david@...hat.com>,
        HORIGUCHI NAOYA(堀口 直也) 
        <naoya.horiguchi@....com>,
        Xiongchun duan <duanxiongchun@...edance.com>,
        linux-doc@...r.kernel.org, LKML <linux-kernel@...r.kernel.org>,
        Linux Memory Management List <linux-mm@...ck.org>,
        linux-fsdevel <linux-fsdevel@...r.kernel.org>
Subject: Re: [External] Re: [PATCH v13 06/12] mm: hugetlb: set the
 PageHWPoison to the raw error page

On Mon, Jan 25, 2021 at 8:06 AM David Rientjes <rientjes@...gle.com> wrote:
>
>
> 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>

Thanks.