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

["Zhang, Xiantao" <xiantao.zhang@xxxxxxxxx>]

Hi, Guys 
Do you have comments for this patchset ? Thanks!
Xiantao 

> -----Original Message-----
> From: Zhang, Xiantao
> Sent: Tuesday, December 11, 2012 1:57 AM
> To: xen-devel@xxxxxxxxxxxxxxxxxxx
> Cc: JBeulich@xxxxxxxx; keir@xxxxxxx; Dong, Eddie; Nakajima, Jun; Zhang,
> Xiantao
> Subject: [PATCH 00/11] Add virtual EPT support Xen.
> 
> 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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