linux-kernel - RE: [PATCH] ACPI: APEI: move edac_init ahead of ghes platform drv register

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Date:   Mon, 8 Aug 2022 21:36:13 +0000
From:   "Kani, Toshi" <toshi.kani@....com>
To:     Borislav Petkov <bp@...en8.de>
CC:     "Rafael J. Wysocki" <rafael@...nel.org>,
        Jia He <justin.he@....com>, "Len Brown" <lenb@...nel.org>,
        James Morse <james.morse@....com>,
        Tony Luck <tony.luck@...el.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        "Robert Richter" <rric@...nel.org>,
        Shuai Xue <xueshuai@...ux.alibaba.com>,
        "Jarkko Sakkinen" <jarkko@...nel.org>,
        ACPI Devel Maling List <linux-acpi@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        "open list:EDAC-CORE" <linux-edac@...r.kernel.org>
Subject: RE: [PATCH] ACPI: APEI: move edac_init ahead of ghes platform drv
 register

On Monday, August 8, 2022 3:21 PM, Borislav Petkov wrote:
> On Mon, Aug 08, 2022 at 09:11:52PM +0000, Kani, Toshi wrote:
> > Whichever loaded first wins.
> 
> That I know.
> 
> The question is, which one *should* win each time.
> 
> IOW, on which platforms should ghes_edac load and on which the chipset-
> one?

Platforms with ACPI GHES support should use ghes_edac.  This is the case
on Arm.  The x86 side has additional platform ID check to protect from legacy
buggy GHES FW existed before ghes_edac enablement. 

Toshi