linux-kernel - Re: [PATCH 2/2] EDAC/ghes: Modularize ghes_edac driver to remove the dependency on ghes

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Message-ID: <Yv1V+gWICIcuNXdE@zn.tnic>
Date:   Wed, 17 Aug 2022 22:56:26 +0200
From:   Borislav Petkov <bp@...en8.de>
To:     "Kani, Toshi" <toshi.kani@....com>
Cc:     Justin He <Justin.He@....com>, Ard Biesheuvel <ardb@...nel.org>,
        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>,
        Robert Moore <robert.moore@...el.com>,
        "linux-acpi@...r.kernel.org" <linux-acpi@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-edac@...r.kernel.org" <linux-edac@...r.kernel.org>,
        "devel@...ica.org" <devel@...ica.org>,
        "Rafael J . Wysocki" <rafael@...nel.org>,
        Shuai Xue <xueshuai@...ux.alibaba.com>,
        Jarkko Sakkinen <jarkko@...nel.org>,
        "linux-efi@...r.kernel.org" <linux-efi@...r.kernel.org>,
        nd <nd@....com>, "stable@...nel.org" <stable@...nel.org>
Subject: Re: [PATCH 2/2] EDAC/ghes: Modularize ghes_edac driver to remove the
 dependency on ghes

On Wed, Aug 17, 2022 at 08:22:58PM +0000, Kani, Toshi wrote:
> ghes_edac is used on Arm. This original issue happened on a non-HPE
> platform.

Remember: ghes_edac loads only on known-good platforms - not the other
way around. If ARM folks wanna use it there, then I'd expect explicit
enablement to do so.

> to keep it protected from any edac driver.

You got this all backwards. If anything, the kernel should be protected
from ghes.

-- 
Regards/Gruss,
    Boris.

https://people.kernel.org/tglx/notes-about-netiquette