KVM: MMU: Avoid sign extension in mmu_alloc_direct_roots() pae root address

Signed-off-by: Avi Kivity <avi@redhat.com>

diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
index ba7e7646fb78b1dbf088e7a7d85b332ca1ed358b..dc1b4fb299b7b9e43428565720652648b0c609dc 100644 (file)
--- a/arch/x86/kvm/mmu.c
+++ b/arch/x86/kvm/mmu.c
@@ -2374,7 +2374,7 @@ static int mmu_check_root(struct kvm_vcpu *vcpu, gfn_t root_gfn)
 static int mmu_alloc_direct_roots(struct kvm_vcpu *vcpu)
 {
        struct kvm_mmu_page *sp;
-       int i;
+       unsigned i;
 
        if (vcpu->arch.mmu.shadow_root_level == PT64_ROOT_LEVEL) {
                spin_lock(&vcpu->kvm->mmu_lock);