iommu/amd - Record more information about unknown events

When an unknown type event occurs, the default information written to
the syslog should dump raw event data. This could provide insight into
the event that occurred.
Signed-off-by: NGary R Hook <gary.hook@amd.com>
Signed-off-by: NAlex Williamson <alex.williamson@redhat.com>

drivers/iommu/amd_iommu.c

@@ -616,7 +616,9 @@ static void iommu_print_event(struct amd_iommu *iommu, void *__evt)
 		       address, flags);
 		break;
 	default:
-		printk(KERN_ERR "UNKNOWN type=0x%02x]\n", type);
+		printk(KERN_ERR "UNKNOWN type=0x%02x event[0]=0x%08x "
+		       "event[1]=0x%08x event[2]=0x%08x event[3]=0x%08x\n",
+		       type, event[0], event[1], event[2], event[3]);
 	}
 
 	memset(__evt, 0, 4 * sizeof(u32));