linux-kernel - Re: [PATCH 3/6] x86/mce: Add support for new MCA

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Date:	Fri, 8 Jul 2016 11:37:31 +0200
From:	Borislav Petkov <bp@...en8.de>
To:	Ingo Molnar <mingo@...nel.org>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	Yazen Ghannam <Yazen.Ghannam@....com>
Subject: Re: [PATCH 3/6] x86/mce: Add support for new MCA_SYND register

On Fri, Jul 08, 2016 at 11:26:59AM +0200, Ingo Molnar wrote:
> So why does neither the changelog nor the code comment actually _explain_ this and 
> give aa bit of a background about what 'syndrome information' is and why we want 
> to have kernel support for it?
> 
> This is why I hate kernel tooling that is not part of the kernel tree - the mcelog 
> patch (hopefully ...) would tell us more about all this - but it's separate and 
> this patch does not tell us anything ...

Ah, this is one of those omissions where we forgot to explain, sorry.
How about this:

"The syndrome value is used to uniquely identify which bits of a
reported ECC error are corrupted."

Do you want it as a comment in the code or in the commit message or both?

Thanks.

-- 
Regards/Gruss,
    Boris.

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