diff --git a/drivers/iommu/intel/iommu.c b/drivers/iommu/intel/iommu.c index 29c4a3bf3acd0fcd7c284ae5586fd57b9d9d3f95..a167d59101ae2e9b8da3c6e31c1104d37203c6a5 100644 --- a/drivers/iommu/intel/iommu.c +++ b/drivers/iommu/intel/iommu.c @@ -707,14 +707,15 @@ static void pgtable_walk(struct intel_iommu *iommu, unsigned long pfn, while (1) { offset = pfn_level_offset(pfn, level); pte = &parent[offset]; - if (!pte || (dma_pte_superpage(pte) || !dma_pte_present(pte))) { - pr_info("PTE not present at level %d\n", level); - break; - } pr_info("pte level: %d, pte value: 0x%016llx\n", level, pte->val); - if (level == 1) + if (!dma_pte_present(pte)) { + pr_info("page table not present at level %d\n", level - 1); + break; + } + + if (level == 1 || dma_pte_superpage(pte)) break; parent = phys_to_virt(dma_pte_addr(pte));