RE: [Xen-devel] Avoiding VmEntry/VmExit.

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

There is no such a bit in VMCS that indicates HVM guest's IRET should
incur VMexit, though the "External-interrupt exiting" and "NMI exiting"
may cause VMexit on HVM guest's IRET under certain conditions.

-- Dexuan

Devdutt Patnaik wrote:
> Yes, this is for HVM. On a related note, is there any bit in the VMCS
> region that will cause an IRET in the guest VM to trap into Xen so
> that I can then service another VM ?
> 

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