diff --git a/drivers/iommu/intel/debugfs.c b/drivers/iommu/intel/debugfs.c
index 86b506af7daa1418e70fb87bded66181248a1ec4..7223adfabd7db6dac9a560a5a22b28d71bd2135b 100644
--- a/drivers/iommu/intel/debugfs.c
+++ b/drivers/iommu/intel/debugfs.c
@@ -435,8 +435,21 @@ static int domain_translation_struct_show(struct seq_file *m,
 			}
 			pgd &= VTD_PAGE_MASK;
 		} else { /* legacy mode */
-			pgd = context->lo & VTD_PAGE_MASK;
-			agaw = context->hi & 7;
+			u8 tt = (u8)(context->lo & GENMASK_ULL(3, 2)) >> 2;
+
+			/*
+			 * According to Translation Type(TT),
+			 * get the page table pointer(SSPTPTR).
+			 */
+			switch (tt) {
+			case CONTEXT_TT_MULTI_LEVEL:
+			case CONTEXT_TT_DEV_IOTLB:
+				pgd = context->lo & VTD_PAGE_MASK;
+				agaw = context->hi & 7;
+				break;
+			default:
+				goto iommu_unlock;
+			}
 		}
 
 		seq_printf(m, "Device %04x:%02x:%02x.%x ",