From: KarimAllah Ahmed karahmed@amazon.de
commit b614c6027896ff9ad6757122e84760d938cab15e upstream.
The field "page" is initialized to KVM_UNMAPPED_PAGE when it is not used (i.e. when the memory lives outside kernel control). So this check will always end up using kunmap even for memremap regions.
Fixes: e45adf665a53 ("KVM: Introduce a new guest mapping API") Cc: stable@vger.kernel.org Signed-off-by: KarimAllah Ahmed karahmed@amazon.de Signed-off-by: Paolo Bonzini pbonzini@redhat.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- virt/kvm/kvm_main.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/virt/kvm/kvm_main.c +++ b/virt/kvm/kvm_main.c @@ -1790,7 +1790,7 @@ void kvm_vcpu_unmap(struct kvm_vcpu *vcp if (!map->hva) return;
- if (map->page) + if (map->page != KVM_UNMAPPED_PAGE) kunmap(map->page); #ifdef CONFIG_HAS_IOMEM else