Mailing List Archive: [PATCH 00/11] Add virtual EPT support Xen.

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

Dec 9, 2012, 10:21 PM

Post #1 of 3 (416 views)

From: Zhang Xiantao <xiantao.zhang@intel.com>

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@intel.com>

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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Re: [PATCH 00/11] Add virtual EPT support Xen. [ In reply to ]

xiantao.zhang at intel

Dec 12, 2012, 4:31 PM

Post #2 of 3 (397 views)

Permalink

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@lists.xensource.com
> Cc: JBeulich@suse.com; keir@xen.org; Dong, Eddie; Nakajima, Jun; Zhang,
> Xiantao
> Subject: [PATCH 00/11] Add virtual EPT support Xen.
>
> From: Zhang Xiantao <xiantao.zhang@intel.com>
>
> 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@intel.com>
>
> 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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Re: [PATCH 00/11] Add virtual EPT support Xen. [ In reply to ]

JBeulich at suse

Dec 13, 2012, 2:25 AM

Post #3 of 3 (398 views)

Permalink

>>> On 13.12.12 at 01:31, "Zhang, Xiantao" <xiantao.zhang@intel.com> wrote:
> Hi, Guys
> Do you have comments for this patchset ? Thanks!
> Xiantao

I was actually hoping for Tim to take a look. But you should probably
be a little more patient - it's been just two days since this got posted.

Jan

>> -----Original Message-----
>> From: Zhang, Xiantao
>> Sent: Tuesday, December 11, 2012 1:57 AM
>> To: xen-devel@lists.xensource.com
>> Cc: JBeulich@suse.com; keir@xen.org; Dong, Eddie; Nakajima, Jun; Zhang,
>> Xiantao
>> Subject: [PATCH 00/11] Add virtual EPT support Xen.
>>
>> From: Zhang Xiantao <xiantao.zhang@intel.com>
>>
>> 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@intel.com>
>>
>> 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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