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

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Message-ID: <bfbc12fb68eea9d8d4cc257c213393fd4e92c33a.camel@amazon.com>
Date:   Fri, 31 May 2019 01:15:33 +0000
From:   "Herrenschmidt, Benjamin" <benh@...zon.com>
To:     "robh+dt@...nel.org" <robh+dt@...nel.org>,
        "Woodhouse, David" <dwmw@...zon.co.uk>,
        "paulmck@...ux.ibm.com" <paulmck@...ux.ibm.com>,
        "james.morse@....com" <james.morse@....com>,
        "mchehab@...nel.org" <mchehab@...nel.org>,
        "mark.rutland@....com" <mark.rutland@....com>,
        "Hawa, Hanna" <hhhawa@...zon.com>,
        "gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>,
        "bp@...en8.de" <bp@...en8.de>,
        "davem@...emloft.net" <davem@...emloft.net>,
        "nicolas.ferre@...rochip.com" <nicolas.ferre@...rochip.com>
CC:     "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 Thu, 2019-05-30 at 11:19 -0700, Boris Petkov wrote:
> On May 30, 2019 3:15:29 AM PDT, Hanna Hawa <hhhawa@...zon.com> wrote:
> > Add support for error detection and correction for Amazon's
> > Annapurna
> > Labs SoCs for L1/L2 caches.
> 
> 
> So this should be a driver for the whole annapurna platform and not
> only about the RAS functionality in an IP like the caches. See other
> ARM EDAC drivers in drivers/edac/ for an example.

This isn't terribly helpful, there's nothing telling anybody which of
those files corresponds to an ARM SoC :-)

That said ...

You really want a single EDAC driver that contains all the stuff for
the caches, the memory controller, etc... ?

The idea here was to separate the core L1/L2 EDAC from the memory
controller EDAC I think ... Roben, Hanna, can you describe the long run
strategy here ?

Cheers,
Ben.