linux-kernel - Re: [PATCH] x86, CPU, AMD: Add workaround for family 16h, erratum 793

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Message-ID: <20140117182528.GK8715@pd.tnic>
Date:	Fri, 17 Jan 2014 19:25:28 +0100
From:	Borislav Petkov <bp@...en8.de>
To:	Aravind Gopalakrishnan <aravind.gopalakrishnan@....com>
Cc:	"H. Peter Anvin" <hpa@...or.com>,
	Henrique de Moraes Holschuh <hmh@....eng.br>,
	X86 ML <x86@...nel.org>, LKML <linux-kernel@...r.kernel.org>,
	Kim Naru <kim.naru@....com>,
	Sherry Hurwitz <sherry.hurwitz@....com>
Subject: Re: [PATCH] x86, CPU, AMD: Add workaround for family 16h, erratum 793

On Fri, Jan 17, 2014 at 12:05:37PM -0600, Aravind Gopalakrishnan wrote:
> On 1/17/2014 11:42 AM, H. Peter Anvin wrote:
> >
> >Hence the question: did an unfixed BIOS ever make it into a shipping
> >production system?  Because if it did, we do have a coverage hole.
> >
> Right, and the answer to your question is: there is a *chance* it
> did.. From internal discussions, I could gather that the fix went into
> BIOS code earlier for desktop/mobile versions than it did for server
> versions;
>
> So there is a chance production systems (desktop ones) might never see
> the issue, but server ones will, as BIOSes spun only from now onwards
> will have the workaround..

This is exactly what I mean: I would like to have this question answered
before any erratum fix goes into the kernel.

-- 
Regards/Gruss,
    Boris.

Sent from a fat crate under my desk. Formatting is fine.
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