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KVM: x86: mmu: free_page can handle NULL 

Reviewed-by: Radim Krčmář <rkrcmar@redhat.com>
Signed-off-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
This commit is contained in:
David Hildenbrand 2017-08-24 20:51:24 +02:00 committed by Paolo Bonzini
parent bb606a9b80
commit 87ca74ad92
1 changed files with 1 additions and 2 deletions
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3
arch/x86/kvm/mmu.c
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@ -4993,8 +4993,7 @@ EXPORT_SYMBOL_GPL(kvm_disable_tdp);
static void free_mmu_pages(struct kvm_vcpu *vcpu)
{
free_page((unsigned long)vcpu->arch.mmu.pae_root);
if (vcpu->arch.mmu.lm_root != NULL)
free_page((unsigned long)vcpu->arch.mmu.lm_root);
free_page((unsigned long)vcpu->arch.mmu.lm_root);
}
static int alloc_mmu_pages(struct kvm_vcpu *vcpu)