linux-kernel - Re: [PATCH] x86/amd: fix crash as Xen Dom0 on AMD Trinity systems

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Message-ID: <4FC631D3.9080907@zytor.com>
Date:	Wed, 30 May 2012 07:42:27 -0700
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Andre Przywara <andre.przywara@....com>
CC:	mingo@...e.hu, tglx@...utronix.de, konrad.wilk@...cle.com,
	jeremy@...p.org, linux-kernel@...r.kernel.org,
	xen-devel@...ts.xensource.com, stable@...r.kernel.org.#.3.4+
Subject: Re: [PATCH] x86/amd: fix crash as Xen Dom0 on AMD Trinity systems

On 05/30/2012 06:10 AM, Andre Przywara wrote:
> Because we are behind a family check before tweaking the topology
> bit, we can use the standard rd/wrmsr variants for the CPUID feature
> register.

That is not what the *msr*_amd*() functions do.

NAK.  This is a totally bogus patch.

	-hpa

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