linux-kernel - Re: [PATCH 3/3] ghes_edac: add platform check to enable ghes

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Date:   Fri, 21 Jul 2017 15:08:41 +0000
From:   "Kani, Toshimitsu" <toshi.kani@....com>
To:     "mchehab@...pensource.com" <mchehab@...pensource.com>,
        "bp@...en8.de" <bp@...en8.de>
CC:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "tglx@...utronix.de" <tglx@...utronix.de>,
        "mchehab@...nel.org" <mchehab@...nel.org>,
        "rjw@...ysocki.net" <rjw@...ysocki.net>,
        "srinivas.pandruvada@...ux.intel.com" 
        <srinivas.pandruvada@...ux.intel.com>,
        "tony.luck@...el.com" <tony.luck@...el.com>,
        "lenb@...nel.org" <lenb@...nel.org>,
        "linux-acpi@...r.kernel.org" <linux-acpi@...r.kernel.org>,
        "linux-edac@...r.kernel.org" <linux-edac@...r.kernel.org>
Subject: Re: [PATCH 3/3] ghes_edac: add platform check to enable ghes_edac

On Fri, 2017-07-21 at 15:47 +0200, Borislav Petkov wrote:
> On Fri, Jul 21, 2017 at 10:40:01AM -0300, Mauro Carvalho Chehab
> wrote:
> > What happens when the error can be corrected? Does it still report
> > it to userspace, or just silently hide the error?
> > 
> > If I remember well about a past discussion with some vendor, I was
> > told that the firmware can hide some errors from being reported. Is
> > it still the case?
> 
> I've heard the same thing but I have no idea what they're actually
> doing. But it would make sense because the intention is not to worry
> users unnecessarily if it can hide the error and if there are no
> adverse consequences from it.

Yes, that is correct.  Corrected errors are reported to the OS when
they exceeded the platform's threshold.

Thanks,
-Toshi