[Xen-devel] [PATCH 00/11] Add virtual EPT support Xen.

[xiantao.zhang@xxxxxxxxx]

From: Zhang Xiantao <xiantao.zhang@xxxxxxxxx>

With virtual EPT support, L1 hyerpvisor can use EPT hardware
for L2 guest's memory virtualization. In this way, L2 guest's
performance can be improved sharply. According to our testing,
some benchmarks can show > 5x performance gain.

Signed-off-by: Zhang Xiantao <xiantao.zhang@xxxxxxxxx>

Zhang Xiantao (11):
  nestedhap: Change hostcr3 and p2m->cr3 to meaningful words
  nestedhap: Change nested p2m's walker to vendor-specific
  nested_ept: Implement guest ept's walker
  nested_ept: Add permission check for success case
  EPT: Make ept data structure or operations neutral
  nEPT: Try to enable EPT paging for L2 guest.
  nEPT: Sync PDPTR fields if L2 guest in PAE paging mode
  nEPT: Use minimal permission for nested p2m.
  nEPT: handle invept instruction from L1 VMM
  nEPT: expost EPT capablity to L1 VMM
  nVMX: Expose VPID capability to nested VMM.

 xen/arch/x86/hvm/hvm.c                  |    7 +-
 xen/arch/x86/hvm/svm/nestedsvm.c        |   31 +++
 xen/arch/x86/hvm/svm/svm.c              |    3 +-
 xen/arch/x86/hvm/vmx/vmcs.c             |    2 +-
 xen/arch/x86/hvm/vmx/vmx.c              |   76 +++++---
 xen/arch/x86/hvm/vmx/vvmx.c             |  208 ++++++++++++++++++-
 xen/arch/x86/mm/guest_walk.c            |   12 +-
 xen/arch/x86/mm/hap/Makefile            |    1 +
 xen/arch/x86/mm/hap/nested_ept.c        |  345 +++++++++++++++++++++++++++++++
 xen/arch/x86/mm/hap/nested_hap.c        |   79 +++----
 xen/arch/x86/mm/mm-locks.h              |    2 +-
 xen/arch/x86/mm/p2m-ept.c               |   96 +++++++--
 xen/arch/x86/mm/p2m.c                   |   44 +++--
 xen/arch/x86/mm/shadow/multi.c          |    2 +-
 xen/include/asm-x86/guest_pt.h          |    8 +
 xen/include/asm-x86/hvm/hvm.h           |    9 +-
 xen/include/asm-x86/hvm/nestedhvm.h     |    1 +
 xen/include/asm-x86/hvm/svm/nestedsvm.h |    3 +
 xen/include/asm-x86/hvm/vmx/vmcs.h      |   31 ++-
 xen/include/asm-x86/hvm/vmx/vmx.h       |    6 +-
 xen/include/asm-x86/hvm/vmx/vvmx.h      |   29 +++-
 xen/include/asm-x86/p2m.h               |   17 +-
 22 files changed, 859 insertions(+), 153 deletions(-)
 create mode 100644 xen/arch/x86/mm/hap/nested_ept.c


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