From fb764416492a1204c20fdf4507019012d27bd1a2 Mon Sep 17 00:00:00 2001 From: Rusty Russell Date: Tue, 31 Jul 2007 20:45:03 +1000 Subject: [PATCH] KVM: Don't assign vcpu->cr3 if it's invalid: check first, set last sSigned-off-by: Rusty Russell Signed-off-by: Avi Kivity --- drivers/kvm/kvm_main.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/kvm/kvm_main.c b/drivers/kvm/kvm_main.c index 2be6b1ca1a06..5dc601702782 100644 --- a/drivers/kvm/kvm_main.c +++ b/drivers/kvm/kvm_main.c @@ -579,7 +579,6 @@ void set_cr3(struct kvm_vcpu *vcpu, unsigned long cr3) } } - vcpu->cr3 = cr3; mutex_lock(&vcpu->kvm->lock); /* * Does the new cr3 value map to physical memory? (Note, we @@ -592,8 +591,10 @@ void set_cr3(struct kvm_vcpu *vcpu, unsigned long cr3) */ if (unlikely(!gfn_to_memslot(vcpu->kvm, cr3 >> PAGE_SHIFT))) inject_gp(vcpu); - else + else { + vcpu->cr3 = cr3; vcpu->mmu.new_cr3(vcpu); + } mutex_unlock(&vcpu->kvm->lock); } EXPORT_SYMBOL_GPL(set_cr3); -- 2.11.0