KVM: MMU: Introduce get_cr3 function pointer
This function pointer in the MMU context is required to
implement Nested Nested Paging.
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
index a55f8d5..e4a7de4 100644
--- a/arch/x86/kvm/mmu.c
+++ b/arch/x86/kvm/mmu.c
@@ -2365,7 +2365,7 @@
int direct = 0;
u64 pdptr;
- root_gfn = vcpu->arch.cr3 >> PAGE_SHIFT;
+ root_gfn = vcpu->arch.mmu.get_cr3(vcpu) >> PAGE_SHIFT;
if (vcpu->arch.mmu.shadow_root_level == PT64_ROOT_LEVEL) {
hpa_t root = vcpu->arch.mmu.root_hpa;
@@ -2562,6 +2562,11 @@
mmu_free_roots(vcpu);
}
+static unsigned long get_cr3(struct kvm_vcpu *vcpu)
+{
+ return vcpu->arch.cr3;
+}
+
static void inject_page_fault(struct kvm_vcpu *vcpu,
u64 addr,
u32 err_code)
@@ -2715,6 +2720,7 @@
context->root_hpa = INVALID_PAGE;
context->direct_map = true;
context->set_cr3 = kvm_x86_ops->set_tdp_cr3;
+ context->get_cr3 = get_cr3;
if (!is_paging(vcpu)) {
context->gva_to_gpa = nonpaging_gva_to_gpa;
@@ -2755,6 +2761,7 @@
vcpu->arch.mmu.base_role.cr4_pae = !!is_pae(vcpu);
vcpu->arch.mmu.base_role.cr0_wp = is_write_protection(vcpu);
vcpu->arch.mmu.set_cr3 = kvm_x86_ops->set_cr3;
+ vcpu->arch.mmu.get_cr3 = get_cr3;
return r;
}