[PATCH 0/22] Nested Paging support for Nested SVM v2

[Joerg Roedel <joerg.roedel@amd.com>]

Hi,

this is the second and reworked version of my nested paging for nested svm
patchset. Changes to the previous version include:

	* Renamed mmu.tdp_enabled to mmu.direct_map
	* Introduced two helper functions to read physical memory
	  locations of the current running guest level
	* Fixed a couple of bugs were KVM needs to read l2
	  physical memory and others

This patchset is tested with KVM and Windows 7 XPmode. I also tested in KVM
with Linux and Windows 7 as l2 guests. I also tested different pagesize
combinations and did a stress tests for a couple of hours. All these tests
showed no introduced regressions.
Please review this second version of the patch-set. I appreciate your feedback.

Thanks,

	Joerg

Diffstat:

 arch/x86/include/asm/kvm_host.h |   26 ++++++
 arch/x86/kvm/emulate.c          |   22 +++---
 arch/x86/kvm/mmu.c              |  160 ++++++++++++++++++++++++++++++--------
 arch/x86/kvm/mmu.h              |    2 +
 arch/x86/kvm/paging_tmpl.h      |   97 +++++++++++++++++++-----
 arch/x86/kvm/svm.c              |  120 ++++++++++++++++++++++++-----
 arch/x86/kvm/vmx.c              |    3 +
 arch/x86/kvm/x86.c              |   77 +++++++++++++++++--
 include/linux/kvm_host.h        |    5 +
 9 files changed, 423 insertions(+), 89 deletions(-)

Shortlog:

Joerg Roedel (22):
      KVM: MMU: Check for root_level instead of long mode
      KVM: MMU: Make tdp_enabled a mmu-context parameter
      KVM: MMU: Make set_cr3 a function pointer in kvm_mmu
      KVM: X86: Introduce a tdp_set_cr3 function
      KVM: MMU: Introduce get_cr3 function pointer
      KVM: MMU: Introduce inject_page_fault function pointer
      KVM: SVM: Implement MMU helper functions for Nested Nested Paging
      KVM: MMU: Change init_kvm_softmmu to take a context as parameter
      KVM: MMU: Let is_rsvd_bits_set take mmu context instead of vcpu
      KVM: MMU: Introduce generic walk_addr function
      KVM: MMU: Add infrastructure for two-level page walker
      KVM: MMU: Implement nested gva_to_gpa functions
      KVM: X86: Add kvm_read_guest_page_tdp function
      KVM: MMU: Make walk_addr_generic capable for two-level walking
      KVM: MMU: Introduce kvm_read_guest_page_x86()
      KVM: MMU: Track page fault data in struct vcpu
      KVM: MMU: Propagate the right fault back to the guest after gva_to_gpa
      KVM: X86: Propagate fetch faults
      KVM: MMU: Introduce init_kvm_nested_mmu()
      KVM: SVM: Initialize Nested Nested MMU context on VMRUN
      KVM: SVM: Report Nested Paging support to userspace
      KVM: SVM: Expect two more candiates for exit_int_info