diff options
| author | Paolo Bonzini <pbonzini@redhat.com> | 2020-05-19 06:18:31 -0400 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2020-06-01 04:26:03 -0400 |
| commit | 929d1cfaa6926ccee28d8d4220e0b4e2defd9cd1 (patch) | |
| tree | 225611f1c1b5ea16921c1e93a7eaad02341d5b14 /arch/x86/kvm/mmu/mmu.c | |
| parent | c513f484c5582a8efadf3d72298e2285b041536e (diff) | |
KVM: MMU: pass arbitrary CR0/CR4/EFER to kvm_init_shadow_mmu
This allows fetching the registers from the hsave area when setting
up the NPT shadow MMU, and is needed for KVM_SET_NESTED_STATE (which
runs long after the CR0, CR4 and EFER values in vcpu have been switched
to hold L2 guest state).
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kvm/mmu/mmu.c')
| -rw-r--r-- | arch/x86/kvm/mmu/mmu.c | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/arch/x86/kvm/mmu/mmu.c b/arch/x86/kvm/mmu/mmu.c index fd1c9145505c..2e62a03410c7 100644 --- a/arch/x86/kvm/mmu/mmu.c +++ b/arch/x86/kvm/mmu/mmu.c @@ -4952,7 +4952,7 @@ kvm_calc_shadow_mmu_root_page_role(struct kvm_vcpu *vcpu, bool base_only) return role; } -void kvm_init_shadow_mmu(struct kvm_vcpu *vcpu) +void kvm_init_shadow_mmu(struct kvm_vcpu *vcpu, u32 cr0, u32 cr4, u32 efer) { struct kvm_mmu *context = vcpu->arch.mmu; union kvm_mmu_role new_role = @@ -4961,11 +4961,11 @@ void kvm_init_shadow_mmu(struct kvm_vcpu *vcpu) if (new_role.as_u64 == context->mmu_role.as_u64) return; - if (!is_paging(vcpu)) + if (!(cr0 & X86_CR0_PG)) nonpaging_init_context(vcpu, context); - else if (is_long_mode(vcpu)) + else if (efer & EFER_LMA) paging64_init_context(vcpu, context); - else if (is_pae(vcpu)) + else if (cr4 & X86_CR4_PAE) paging32E_init_context(vcpu, context); else paging32_init_context(vcpu, context); @@ -5043,7 +5043,11 @@ static void init_kvm_softmmu(struct kvm_vcpu *vcpu) { struct kvm_mmu *context = vcpu->arch.mmu; - kvm_init_shadow_mmu(vcpu); + kvm_init_shadow_mmu(vcpu, + kvm_read_cr0_bits(vcpu, X86_CR0_PG), + kvm_read_cr4_bits(vcpu, X86_CR4_PAE), + vcpu->arch.efer); + context->get_guest_pgd = get_cr3; context->get_pdptr = kvm_pdptr_read; context->inject_page_fault = kvm_inject_page_fault; |