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KVM: MMU: Implement nested gva_to_gpa functions

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This patch adds the functions to do a nested l2_gva to
l1_gpa page table walk.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
This commit is contained in:
Joerg Roedel
2010-09-10 17:30:50 +02:00
committed by Avi Kivity
parent 14dfe855f9
commit 6539e738f6
4 changed files with 54 additions and 0 deletions
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10
arch/x86/include/asm/kvm_host.h
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@@ -295,6 +295,16 @@ struct kvm_vcpu_arch {
*/
struct kvm_mmu mmu;
/*
* Paging state of an L2 guest (used for nested npt)
*
* This context will save all necessary information to walk page tables
* of the an L2 guest. This context is only initialized for page table
* walking and not for faulting since we never handle l2 page faults on
* the host.
*/
struct kvm_mmu nested_mmu;
/*
* Pointer to the mmu context currently used for
* gva_to_gpa translations.