linux-kernel - RE: [ANNOUNCE] kvm howto

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Message-ID: <64F9B87B6B770947A9F8391472E0321608EBF537@ehost011-8.exch011.intermedia.net>
Date:	Mon, 6 Nov 2006 00:15:02 -0800
From:	"Dor Laor" <dor.laor@...ranet.com>
To:	"Tomasz Torcz" <zdzichu@....pl>,
	"linux-kernel" <linux-kernel@...r.kernel.org>
Subject: RE: [ANNOUNCE] kvm howto

The BIOS check is a must, it checks bit #0 of MSR_IA32_FEATURE_CONTROL,
if it set this means that software cannot write to the MSR. If bit #2 is
clear too then when executing vmxon you'll get #GP.

So the check should better be there...

--
Dor Laor

-----Original Message-----
From: linux-kernel-owner@...r.kernel.org
[mailto:linux-kernel-owner@...r.kernel.org] On Behalf Of Tomasz Torcz
Sent: Sunday, November 05, 2006 7:14 PM
To: linux-kernel
Subject: Re: [ANNOUNCE] kvm howto

On Thu, Nov 02, 2006 at 03:25:41PM +0200, Avi Kivity wrote:
> I've just uploaded a HOWTO to http://kvm.sourceforge.net, including 
> (hopefuly) everything needed to get kvm running.  Please take a look
and 
> comment.

  I have some problems on Thinkpad z61t with Core Duo T2500.
/proc/cpuinfo shows "vmx" in flags, but module refuses to load:
[17462106.632000] kvm: disabled by bios

 I wandered around BIOS setup (latest version), but didn't found
anything about virtualization. Is BIOS check really necessary?

-- 
Tomasz Torcz                                                       72->|
80->|
zdzichu@....-nie.spam-.pl                                          72->|
80->|

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