linux-kernel - RE: [PATCH v4 1/2] x86/MCE: Add function to allow filtering of MCA errors

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Message-ID: <SN6PR12MB2639C80DA928C41AA678DFB6F85F0@SN6PR12MB2639.namprd12.prod.outlook.com>
Date:   Tue, 26 Mar 2019 11:41:05 +0000
From:   "Ghannam, Yazen" <Yazen.Ghannam@....com>
To:     Borislav Petkov <bp@...en8.de>
CC:     "linux-edac@...r.kernel.org" <linux-edac@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "tony.luck@...el.com" <tony.luck@...el.com>,
        "x86@...nel.org" <x86@...nel.org>,
        "rafal@...ecki.pl" <rafal@...ecki.pl>,
        "clemej@...il.com" <clemej@...il.com>
Subject: RE: [PATCH v4 1/2] x86/MCE: Add function to allow filtering of MCA
 errors

> -----Original Message-----
> From: linux-edac-owner@...r.kernel.org <linux-edac-owner@...r.kernel.org> On Behalf Of Borislav Petkov
> Sent: Tuesday, March 26, 2019 2:57 AM
> To: Ghannam, Yazen <Yazen.Ghannam@....com>
> Cc: linux-edac@...r.kernel.org; linux-kernel@...r.kernel.org; tony.luck@...el.com; x86@...nel.org; rafal@...ecki.pl;
> clemej@...il.com
> Subject: Re: [PATCH v4 1/2] x86/MCE: Add function to allow filtering of MCA errors
> 
> On Mon, Mar 25, 2019 at 04:34:22PM +0000, Ghannam, Yazen wrote:
> > From: Yazen Ghannam <yazen.ghannam@....com>
> >
> > Some systems may report spurious MCA errors. In general, spurious MCA
> > errors may be disabled by clearing a particular bit in MCA_CTL. However,
> > clearing a bit in MCA_CTL may not be recommended for some errors, so the
> > only option is to ignore them.
> >
> > An MCA error is printed and handled after it has been added to the MCE
> > event pool. So an MCA error can be ignored by not adding it to the pool.
> >
> > Define a default function that does not filter any errors.
> >
> > Check if an MCA error should be filtered out when adding it to the MCE
> > event pool.
> >
> > Cc: <stable@...r.kernel.org> # 5.0.x
> 
> The old version of the patches had 4.14.x here as a kernel version. Why
> change?
> 

They don't apply cleanly to v4.14 anymore because of the recent header change.

I figured they would need to be fixed up and submitted separately to older stable
versions. Is that okay?

Thanks,
Yazen