linux-kernel - RE: [PATCH] HWPOISON: add a pr_err message when forcibly send a sigbus

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Message-ID: <SJ1PR11MB6083A4F9312C34F69DBA8EEDFCE5A@SJ1PR11MB6083.namprd11.prod.outlook.com>
Date:   Thu, 31 Aug 2023 16:56:25 +0000
From:   "Luck, Tony" <tony.luck@...el.com>
To:     Shuai Xue <xueshuai@...ux.alibaba.com>,
        Will Deacon <will@...nel.org>
CC:     "catalin.marinas@....com" <catalin.marinas@....com>,
        "James.Bottomley@...senPartnership.com" 
        <James.Bottomley@...senPartnership.com>,
        "deller@....de" <deller@....de>,
        "dave.hansen@...ux.intel.com" <dave.hansen@...ux.intel.com>,
        "Lutomirski, Andy" <luto@...nel.org>,
        "peterz@...radead.org" <peterz@...radead.org>,
        "tglx@...utronix.de" <tglx@...utronix.de>,
        "mingo@...hat.com" <mingo@...hat.com>,
        "bp@...en8.de" <bp@...en8.de>, "x86@...nel.org" <x86@...nel.org>,
        "hpa@...or.com" <hpa@...or.com>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-parisc@...r.kernel.org" <linux-parisc@...r.kernel.org>
Subject: RE: [PATCH] HWPOISON: add a pr_err message when forcibly send a
 sigbus

> + @Tony for ERST
> I found that after /dev/mcelog driver deprecated, both x86 and ARM64 platform does not
> support to collect MCE record of previous boot in persistent storage via APEI ERST.
> I propose to add a mechanism to do it for rasdaemon. Do you have any suggestion?

APEI ERST stored records should be available in /sys/fs/pstore after the system reboots.

Can rasdaemon collect them from there?

-Tony