> Hi Avi,
>
> This is a followup of our nested VMX patches that Orit Wasserman posted in
> December. We've addressed most of the comments and concerns that you and
> others on the mailing list had with the previous patch set. We hope you'll
> find these patches easier to understand, and suitable for applying to KVM.
>
>
> The following 24 patches implement nested VMX support. The patches enable a
> guest to use the VMX APIs in order to run its own nested guests. I.e., it
> allows running hypervisors (that use VMX) under KVM. We describe the theory
> behind this work, our implementation, and its performance characteristics,
> in IBM Research report H-0282, "The Turtles Project: Design and Implementation
> of Nested Virtualization", available at:
>
>
http://bit.ly/a0o9te
>
> The current patches support running Linux under a nested KVM using shadow
> page table (with bypass_guest_pf disabled). They support multiple nested
> hypervisors, which can run multiple guests. Only 64-bit nested hypervisors
> are supported. SMP is supported. Additional patches for running Windows under
> nested KVM, and Linux under nested VMware server, and support for nested EPT,
> are currently running in the lab, and will be sent as follow-on patchsets.
>
> These patches were written by:
> Abel Gordon, abelg<at> il.ibm.com
> Nadav Har'El, nyh<at> il.ibm.com
> Orit Wasserman, oritw<at> il.ibm.com
> Ben-Ami Yassor, benami<at> il.ibm.com
> Muli Ben-Yehuda, muli<at> il.ibm.com
>
> With contributions by:
> Anthony Liguori, aliguori<at> us.ibm.com
> Mike Day, mdday<at> us.ibm.com
>
> This work was inspired by the nested SVM support by Alexander Graf and Joerg
> Roedel.
>
>
> Changes since v4:
> * Rebased to the current KVM tree.
> * Support for lazy FPU loading.
> * Implemented about 90 requests and suggestions made on the mailing list
> regarding the previous version of this patch set.
> * Split the changes into many more, and better documented, patches.
>
>
