Messages in this thread Patch in this message | | | From | Joerg Roedel <> | Subject | [PATCH 03/18] KVM: MMU: Make set_cr3 a function pointer in kvm_mmu | Date | Wed, 3 Mar 2010 20:12:06 +0100 |
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This is necessary to implement Nested Nested Paging. As a side effect this allows some cleanups in the SVM nested paging code.
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> --- arch/x86/include/asm/kvm_host.h | 1 + arch/x86/kvm/mmu.c | 4 +++- 2 files changed, 4 insertions(+), 1 deletions(-)
diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h index e7bef19..887a1f7 100644 --- a/arch/x86/include/asm/kvm_host.h +++ b/arch/x86/include/asm/kvm_host.h @@ -241,6 +241,7 @@ struct kvm_pio_request { */ struct kvm_mmu { void (*new_cr3)(struct kvm_vcpu *vcpu); + void (*set_cr3)(struct kvm_vcpu *vcpu, unsigned long root); int (*page_fault)(struct kvm_vcpu *vcpu, gva_t gva, u32 err); void (*free)(struct kvm_vcpu *vcpu); gpa_t (*gva_to_gpa)(struct kvm_vcpu *vcpu, gva_t gva, u32 access, diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c index 5c66c99..ec3da11 100644 --- a/arch/x86/kvm/mmu.c +++ b/arch/x86/kvm/mmu.c @@ -2398,6 +2398,7 @@ static int init_kvm_tdp_mmu(struct kvm_vcpu *vcpu) context->shadow_root_level = kvm_x86_ops->get_tdp_level(); context->root_hpa = INVALID_PAGE; vcpu->arch.mmu.tdp_enabled = true; + vcpu->arch.mmu.set_cr3 = kvm_x86_ops->set_cr3; if (!is_paging(vcpu)) { context->gva_to_gpa = nonpaging_gva_to_gpa; @@ -2437,6 +2438,7 @@ static int init_kvm_softmmu(struct kvm_vcpu *vcpu) vcpu->arch.mmu.base_role.glevels = vcpu->arch.mmu.root_level; vcpu->arch.mmu.tdp_enabled = false; + vcpu->arch.mmu.set_cr3 = kvm_x86_ops->set_cr3; return r; } @@ -2482,7 +2484,7 @@ int kvm_mmu_load(struct kvm_vcpu *vcpu) if (r) goto out; /* set_cr3() should ensure TLB has been flushed */ - kvm_x86_ops->set_cr3(vcpu, vcpu->arch.mmu.root_hpa); + vcpu->arch.mmu.set_cr3(vcpu, vcpu->arch.mmu.root_hpa); out: return r; } -- 1.7.0
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