KVM: MMU: handle compound pages in kvm_is_mmio_pfn

[linux-2.6-omap-h63xx.git] / virt / kvm / kvm_main.c

diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index 266bdaf0ce44d13bd80a895c44001d290ef37213..0ed662dc72d27e3d70409381e87271608e71b0f6 100644 (file)
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -535,8 +535,10 @@ static inline int valid_vcpu(int n)
 
 inline int kvm_is_mmio_pfn(pfn_t pfn)
 {
-       if (pfn_valid(pfn))
-               return PageReserved(pfn_to_page(pfn));
+       if (pfn_valid(pfn)) {
+               struct page *page = compound_head(pfn_to_page(pfn));
+               return PageReserved(page);
+       }
 
        return true;
 }