RE: [Xen-devel] Hypercalls in Intel-VT

["Cui, Dexuan" <dexuan.cui@xxxxxxxxx>]

> From: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx 
> [mailto:xen-devel-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of Ashish Bijlani
> Sent: 2007年10月26日 8:20
> To: xen-devel@xxxxxxxxxxxxxxxxxxx
> Subject: Re: [Xen-devel] Hypercalls in Intel-VT

> 
> could there be a way to make a transition into xen without a vmexit upon 
> executing an iret inside a guest os krnl?
I think we are talking about VMX guest -- the answer it NO...  For an VMX guest 
to return to Xen, a VMexit is a must. You can refert to Intel Software 
Developer Manual 3B for details.

-- Dexuan

         

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