linux-kernel - Re: [GIT PULL] x86/cpu changes for v3.9

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Message-ID: <20130219175726.GA18244@phenom.dumpdata.com>
Date:	Tue, 19 Feb 2013 12:57:27 -0500
From:	Konrad Rzeszutek Wilk <konrad@...nel.org>
To:	Borislav Petkov <bp@...en8.de>, "H. Peter Anvin" <hpa@...or.com>,
	Ingo Molnar <mingo@...nel.org>,
	Boris Ostrovsky <boris.ostrovsky@....com>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, Thomas Gleixner <tglx@...utronix.de>,
	Andrew Morton <akpm@...ux-foundation.org>,
	boris.ostrovsky@...cle.com
Subject: Re: [GIT PULL] x86/cpu changes for v3.9

On Tue, Feb 19, 2013 at 06:47:58PM +0100, Borislav Petkov wrote:
> On Tue, Feb 19, 2013 at 09:38:31AM -0800, H. Peter Anvin wrote:
> > My fault... I was tracking the fix and lost track of the thread.
> > 
> > The problem is that the fix is necessary but not sufficient, as it
> > introduces an undesirable host-guest dependency.  In order to allow
> > neerw guests to work on older hosts we also should use the
> > {rd,wr}msr_safe() functions to manipulate this MSR, with a comment
> > as to why.
> > 
> > Boris, could you prepare such a patch, please?
> 
> I don't think Boris O. is at AMD anymore. Want me to add that to my fix
> for kvm or prep a separate patch?

CC-ing Boris.
> 
> -- 
> Regards/Gruss,
>     Boris.
> 
> Sent from a fat crate under my desk. Formatting is fine.
> --
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