linux-kernel - Re: [PATCH v1 3/3] mm,hwpoison: add kill_accessing

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Message-ID: <CAPcxDJ6OAd=qdfxoTQ4cp5vQ6_+phWqX8gJfec48XyAZybBpsw@mail.gmail.com>
Date:   Mon, 19 Apr 2021 18:49:15 -0700
From:   Jue Wang <juew@...gle.com>
To:     nao.horiguchi@...il.com, "Luck, Tony" <tony.luck@...el.com>
Cc:     akpm@...ux-foundation.org, bp@...en8.de, david@...hat.com,
        linux-kernel@...r.kernel.org, linux-mm@...ck.org, luto@...nel.org,
        naoya.horiguchi@....com, osalvador@...e.de, yaoaili@...gsoft.com
Subject: Re: [PATCH v1 3/3] mm,hwpoison: add kill_accessing_process() to find
 error virtual address

On Tue, 13 Apr 2021 07:43:20 +0900, Naoya Horiguchi wrote:
...
> + * This function is intended to handle "Action Required" MCEs on already
> + * hardware poisoned pages. They could happen, for example, when
> + * memory_failure() failed to unmap the error page at the first call, or
> + * when multiple Action Optional MCE events races on different CPUs with
> + * Local MCE enabled.

+Tony Luck

Hey Tony, I thought SRAO MCEs are broadcasted to all cores in the system
as they come without an execution context, is it correct?

If Yes, Naoya, I think we might want to remove the comments about the
"multiple Action Optional MCE racing" part.

Best,
-Jue