Nested Virtualization: Overview

Hi!

This patch series brings Nested Virtualization to Xen.
I have attached two documents Nested_Virtualization.pdf and XenNestedHVM.pdf.

The first describes how nested virtualization works in general and the latter describes the xen implementation in detail.

The patch series:

patch 01: add nestedhvm guest config option to the tools
This is the only one patch touching the tools
patch 02: move viridian MSRs into the viridian header for use in an
other file added in patch 09.
patch 03: change local_event_delivery_* to take vcpu argument.
This prevents spurious xen crashes on guest shutdown/destroy with nestedhvm enabled.
patch 04: obsolete gfn_to_mfn_current and remove it.
gfn_to_mfn_current is redundant to
gfn_to_mfn(current->domain, ...)
This patch reduces the size of patch 17.
patch 05: hvm_set_cr0: Allow guest to switch into paged real mode.
This makes hvmloader boot when we use xen in xen.
patch 06: Move phys_table from struct domain to struct p2m_domain.
Combined with patch 17 and patch 18, this allows to run nested guest with hap.
patch 07: Add data structures for nested virtualization.
patch 08: add nestedhvm function hooks, described in XenNestedHVM.pdf patch 09: The heart of nested virtualization.
patch 10: Allow guest to enable SVM in EFER
patch 11: Propagate SVM cpuid feature bits to guest
patch 12: Emulate MSRs needed for nested virtualization
patch 13: Handle interrupts (generic part)
patch 14: SVM specific implementation for nested virtualization patch 15: Handle interrupts (SVM specific)
patch 16: The piece of code that effectively turns nested virtualization on patch 17: Change p2m infrastructure to operate with per-p2m instead
of per-domain. Combined with patch 06 and patch 18, this allows to run nested guest with hap.
patch 18: Handle nested pagefault to enable hap-on-hap

---to satisfy European Law for business letters:
Advanced Micro Devices GmbH
Karl-Hammerschmidt-Str. 34, 85609 Dornach b. Muenchen
Geschaeftsfuehrer: Andrew Bowd, Thomas M. McCoy, Giuliano Meroni
Sitz: Dornach, Gemeinde Aschheim, Landkreis Muenchen
Registergericht Muenchen, HRB Nr. 43632

_______________________________________________
Xen-devel mailing list
[email protected]
http://lists.xensource.com/xen-devel