From mboxrd@z Thu Jan  1 00:00:00 1970
From: "Jan Beulich" <jbeulich@novell.com>
Subject: RE: VMX: emulated guest use SYSENTER MSRs
Date: Mon, 09 Jul 2007 10:05:35 +0100
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	<C2B512C7.A78D%Keir.Fraser@cl.cam.ac.uk>
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To: Xin B Li <xin.b.li@intel.com>
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>>> "Li, Xin B" <xin.b.li@intel.com> 07.07.07 10:57 >>>
>I will send out the patch soon.

Not strictly necessary - I have this as part of a larger patch already. =
But if you
beat me in getting this out, I'll sync up with yours.

Jan


>-----Original Message-----
>From: Keir Fraser [mailto:Keir.Fraser@cl.cam.ac.uk]=20
>Sent: Saturday, July 07, 2007 4:52 PM
>To: Li, Xin B; Jan Beulich; xen-devel@lists.xensource.com=20
>Subject: Re: [Xen-devel] VMX: emulated guest use SYSENTER MSRs
>
>Since they are included in the VMCS, and read from there on=20
>save/restore,
>the vmexit appears to be unnecessary.
>
> -- Keir
>
>On 7/7/07 08:48, "Li, Xin B" <xin.b.li@intel.com> wrote:
>
>>=20
>>> What is the reason for not simply clearing the MSR bitmap bits
>>> for these three MSRs, and rather handling the reads/writes=20
>in software?
>>=20
>> I haven't checked those MSRs, the original concern is we need
>> save/restore them when context switch, is this needed?
>>=20
>> -Xin=20
>>=20
>> _______________________________________________
>> Xen-devel mailing list
>> Xen-devel@lists.xensource.com=20
>> http://lists.xensource.com/xen-devel=20
>