linux-kernel - Re: [PATCH] Add Documentation/kvm/msr.txt

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Message-ID: <20100527160248.GF3445@mothafucka.localdomain>
Date:	Thu, 27 May 2010 13:02:48 -0300
From:	Glauber Costa <glommer@...hat.com>
To:	Avi Kivity <avi@...hat.com>
Cc:	kvm@...r.kernel.org, linux-kernel@...r.kernel.org,
	zamsden@...hat.com
Subject: Re: [PATCH] Add Documentation/kvm/msr.txt

On Thu, May 27, 2010 at 11:15:43AM +0300, Avi Kivity wrote:
> On 05/26/2010 09:04 PM, Glauber Costa wrote:
> >This patch adds a file that documents the usage of KVM-specific
> >MSRs.
> >
> 
> Looks good.  A few comments:
> 
> >+
> >+Custom MSR list
> >+--------
> >+
> >+The current supported Custom MSR list is:
> >+
> >+MSR_KVM_WALL_CLOCK:  0x11
> >+
> >+	data: physical address of a memory area.
> 
> Which must be in guest RAM (i.e., don't point it somewhere random
> and expect the hypervisor to allocate it for you).
> 
> Must be aligned to 4 bytes (we don't enforce it though).
I don't see the reason for it.

If this is a requirement, our own implementation
is failing to meet it.


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