[PATCH v6 14/31] KVM: nSVM: Call nested_svm_init_mmu_context() before switching to VMCB02

[Yosry Ahmed]

In preparation for moving more code that depends on
nested_svm_init_mmu_context() before switching to VMCB02, move the call
outside of nested_vmcb02_prepare_control() into callers, a bit earlier.
nested_svm_init_mmu_context() needs to be called after
enter_guest_mode(), but not after switching to VMCB02.

No functional change intended.

Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Yosry Ahmed <yosry@xxxxxxxxxx>
---
 arch/x86/kvm/svm/nested.c | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/arch/x86/kvm/svm/nested.c b/arch/x86/kvm/svm/nested.c
index 5276e41605d43..13d1276940330 100644
--- a/arch/x86/kvm/svm/nested.c
+++ b/arch/x86/kvm/svm/nested.c
@@ -808,10 +808,6 @@ static void nested_vmcb02_prepare_control(struct vcpu_svm *svm,
 	/* Also overwritten later if necessary.  */
 	vmcb02->control.tlb_ctl = TLB_CONTROL_DO_NOTHING;
 
-	/* nested_cr3.  */
-	if (nested_npt_enabled(svm))
-		nested_svm_init_mmu_context(vcpu);
-
 	vcpu->arch.tsc_offset = kvm_calc_nested_tsc_offset(
 			vcpu->arch.l1_tsc_offset,
 			svm->nested.ctl.tsc_offset,
@@ -950,6 +946,9 @@ int enter_svm_guest_mode(struct kvm_vcpu *vcpu, u64 vmcb12_gpa,
 
 	enter_guest_mode(vcpu);
 
+	if (nested_npt_enabled(svm))
+		nested_svm_init_mmu_context(vcpu);
+
 	nested_svm_copy_common_state(svm->vmcb01.ptr, svm->nested.vmcb02.ptr);
 
 	svm_switch_vmcb(svm, &svm->nested.vmcb02);
@@ -1903,6 +1902,10 @@ static int svm_set_nested_state(struct kvm_vcpu *vcpu,
 	nested_copy_vmcb_control_to_cache(svm, ctl);
 
 	enter_guest_mode(vcpu);
+
+	if (nested_npt_enabled(svm))
+		nested_svm_init_mmu_context(vcpu);
+
 	svm_switch_vmcb(svm, &svm->nested.vmcb02);
 	nested_vmcb02_prepare_control(svm, svm->vmcb->save.rip, svm->vmcb->save.cs.base);
 
-- 
2.53.0.414.gf7e9f6c205-goog