[Xen-devel] [PATCH 00/12] Nested Virtualization: Overview

[Christoph Egger <Christoph.Egger@xxxxxxx>]

Hi!

This patch series brings Nested Virtualization to Xen.
This is the eight patch series. Improvements to the
previous patch submission:

- Worked on all items from Tim
- Rebased against c/s 22956:8af88ff698ff
- Several bugfixes
- SVM specific performance improvements:
   - Implemented shadow vmcb
   - Implemented vmcb cleanbit emulation

The patch series:

patch 01: add nestedhvm guest config option to the tools.
                  This is the only one patch touching the tools
patch 02: Add data structures for nested virtualization.
patch 03: add nestedhvm function hooks.
patch 04: The heart of nested virtualization.
patch 05: Allow switch to paged real mode during vmrun emulation.
                  Emulate cr0 and cr4 when guest does not intercept them
                  (i.e. Hyper-V/Windows7, KVM)
patch 06: When injecting an exception into nested guest, inject
                  #VMEXIT into the guest if intercepted.
patch 07: Allow guest to enable SVM in EFER only on AMD.
patch 08: Handle interrupts (generic part).
patch 09: SVM specific implementation for nested virtualization.
patch 10: Handle interrupts (SVM specific).
patch 11: The piece of code that effectively turns on nested virtualization.
patch 12: Handle nested pagefault to enable hap-on-hap and handle
                  nested guest page-table-walks to emulate instructions
                  the guest does not intercept (i.e. WBINVD with Windows 7).

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