linux-kernel - Re: [PATCH 2/2] edac: add support for Amazon's Annapurna Labs EDAC

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Message-ID: <20190611114729.GC31772@zn.tnic>
Date:   Tue, 11 Jun 2019 13:47:29 +0200
From:   Borislav Petkov <bp@...en8.de>
To:     Benjamin Herrenschmidt <benh@...nel.crashing.org>
Cc:     James Morse <james.morse@....com>,
        "Hawa, Hanna" <hhhawa@...zon.com>,
        "robh+dt@...nel.org" <robh+dt@...nel.org>,
        "Woodhouse, David" <dwmw@...zon.co.uk>,
        "paulmck@...ux.ibm.com" <paulmck@...ux.ibm.com>,
        "mchehab@...nel.org" <mchehab@...nel.org>,
        "mark.rutland@....com" <mark.rutland@....com>,
        "gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>,
        "davem@...emloft.net" <davem@...emloft.net>,
        "nicolas.ferre@...rochip.com" <nicolas.ferre@...rochip.com>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "Shenhar, Talel" <talel@...zon.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "Chocron, Jonathan" <jonnyc@...zon.com>,
        "Krupnik, Ronen" <ronenk@...zon.com>,
        "linux-edac@...r.kernel.org" <linux-edac@...r.kernel.org>,
        "Hanoch, Uri" <hanochu@...zon.com>
Subject: Re: [PATCH 2/2] edac: add support for Amazon's Annapurna Labs EDAC

On Tue, Jun 11, 2019 at 03:50:40PM +1000, Benjamin Herrenschmidt wrote:
> Should we fix that then instead ?

Sure.

> What are the big issues with adding some basic locking ? being called
> from NMIs ?

That is one possible issue. I know we don't call the error decoding
routines in NMI context on x86 but no clue about ARM.

> If the separate drivers operate on distinct counters I don't see a big
> problem there.

Yes, and they do.

> I'n not sure why <platform_name> ...

Well, however you'd call it. It will be some distinct name I hope :)

-- 
Regards/Gruss,
    Boris.

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