Re: [RFC] Nested VMX support - kernel

["Roedel, Joerg" <joerg.roedel@amd.com>]

On Mon, Aug 17, 2009 at 03:48:35PM +0200, oritw@il.ibm.com wrote:
> From: Orit Wasserman <oritw@il.ibm.com>
> 
> This patch implements nested VMX support. It enables a guest to use the
> VMX APIs in order to run its own nested guest (i.e., it enables
> running other hypervisors which use VMX under KVM). The current patch
> supports running Linux under a nested KVM. Additional patches for
> running Windows under nested KVM, and Linux and Windows under nested
> VMware server(!), are currently running in the lab. We are in the
> process of forward-porting those patches to -tip.
> 
> The current patch only supports a single nested hypervisor, which can
> only run a single guest.  SMP is not supported yet when running nested
> hypervisor (work in progress). Only 64 bit nested hypervisors are
> supported. Currently only EPT mode in both host and nested hypervisor
> is supported (i.e., both hypervisors must use EPT).
> 
> This patch was written by:
>         Orit Wasserman, oritw@il.ibm.com
>         Ben-Ami Yassour, benami@il.ibm.com
>         Abel Gordon, abelg@il.ibm.com
>         Muli Ben-Yehuda, muli@il.ibm.com
> 
> With contributions by
>         Anthony Liguori, aliguori@us.ibm.com
>         Mike Day, mdday@us.ibm.com

Nice work. Do you have any performance numbers?

	Joerg