From: Avi Kivity <avi@redhat.com>
To: Jiaqing Du <jiaqing@gmail.com>
Cc: kvm@vger.kernel.org
Subject: Re: MSRs load/store
Date: Mon, 07 Dec 2009 17:11:57 +0200 [thread overview]
Message-ID: <4B1D1B3D.6060305@redhat.com> (raw)
In-Reply-To: <6d8082040912070707g3d809d2fy9319d01609133083@mail.gmail.com>
On 12/07/2009 05:07 PM, Jiaqing Du wrote:
> Hi List,
>
> My question is about VM-Exit& VM-Entry controls for MSRs on Intel's processors.
>
> For VM-Exit, a VMM can specify lists of MSRs to be stored and loaded
> on VM exits. But for VM-Entry, a VMM can only specify a list of MSRs
> to be loaded on VM entries. Why does not the processor have the
> feature that stores MSRs before loading new ones for VM entries?
>
Presumably the host knows what values are in those MSRs, so it doesn't
need to store them.
--
error compiling committee.c: too many arguments to function
next prev parent reply other threads:[~2009-12-07 15:11 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-12-07 15:07 MSRs load/store Jiaqing Du
2009-12-07 15:11 ` Avi Kivity [this message]
2009-12-07 15:32 ` Jiaqing Du
2009-12-07 15:37 ` Avi Kivity
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