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-rw-r--r--virt/kvm/iommu.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/virt/kvm/iommu.c b/virt/kvm/iommu.c
index c03f1fb2670..6a67bea4019 100644
--- a/virt/kvm/iommu.c
+++ b/virt/kvm/iommu.c
@@ -107,6 +107,7 @@ int kvm_iommu_map_pages(struct kvm *kvm, struct kvm_memory_slot *slot)
*/
pfn = kvm_pin_pages(slot, gfn, page_size);
if (is_error_pfn(pfn)) {
+ kvm_release_pfn_clean(pfn);
gfn += 1;
continue;
}
@@ -300,6 +301,12 @@ static void kvm_iommu_put_pages(struct kvm *kvm,
/* Get physical address */
phys = iommu_iova_to_phys(domain, gfn_to_gpa(gfn));
+
+ if (!phys) {
+ gfn++;
+ continue;
+ }
+
pfn = phys >> PAGE_SHIFT;
/* Unmap address from IO address space */