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Re: [Qemu-devel] [PATCH] allow update of MSR_EFER_SVM

From: Bernhard Kauer
Subject: Re: [Qemu-devel] [PATCH] allow update of MSR_EFER_SVM
Date: Fri, 29 Feb 2008 16:43:14 +0100
User-agent: Mutt/1.5.17+20080114 (2008-01-14)

On Fri, Feb 29, 2008 at 11:20:24AM +0100, Alexander Graf wrote:
> Keep in mind that updating the bit should fail within a virtual machine.

I found the following sentence in the manual:

        The effect of turning off EFER.SVME while a guest is running is 
        therefore, the VMM should always prevent guests from writing EFER.

Therefore i think the wrmsr-code is just fine, as it is in my patch.

        Bernhard Kauer

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