From: Joerg Roedel Date: Fri, 10 Sep 2010 15:30:40 +0000 (+0200) Subject: KVM: MMU: Make set_cr3 a function pointer in kvm_mmu X-Git-Tag: v2.6.37-rc1~142^2~68 X-Git-Url: https://openfabrics.org/gitweb/?a=commitdiff_plain;h=f43addd46168110d572dcf69100cb215a4e9fd08;p=~emulex%2Finfiniband.git KVM: MMU: Make set_cr3 a function pointer in kvm_mmu 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 Signed-off-by: Avi Kivity --- diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h index 80ef28bddcc..53cedede88f 100644 --- a/arch/x86/include/asm/kvm_host.h +++ b/arch/x86/include/asm/kvm_host.h @@ -236,6 +236,7 @@ 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 5c28e979d73..c8acb9609ca 100644 --- a/arch/x86/kvm/mmu.c +++ b/arch/x86/kvm/mmu.c @@ -2714,6 +2714,7 @@ 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; context->direct_map = true; + context->set_cr3 = kvm_x86_ops->set_cr3; if (!is_paging(vcpu)) { context->gva_to_gpa = nonpaging_gva_to_gpa; @@ -2752,7 +2753,8 @@ static int init_kvm_softmmu(struct kvm_vcpu *vcpu) r = paging32_init_context(vcpu); vcpu->arch.mmu.base_role.cr4_pae = !!is_pae(vcpu); - vcpu->arch.mmu.base_role.cr0_wp = is_write_protection(vcpu); + vcpu->arch.mmu.base_role.cr0_wp = is_write_protection(vcpu); + vcpu->arch.mmu.set_cr3 = kvm_x86_ops->set_cr3; return r; } @@ -2796,7 +2798,7 @@ 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; }