Index: sys/arm64/include/vmparam.h
===================================================================
--- sys/arm64/include/vmparam.h
+++ sys/arm64/include/vmparam.h
@@ -181,7 +181,7 @@
 	KASSERT(PHYS_IN_DMAP(pa),					\
 	    ("%s: PA out of range, PA: 0x%lx", __func__,		\
 	    (vm_paddr_t)(pa)));						\
-	((pa) - dmap_phys_base) | DMAP_MIN_ADDRESS;			\
+	((pa) - dmap_phys_base) + DMAP_MIN_ADDRESS;			\
 })
 
 #define	DMAP_TO_PHYS(va)						\
@@ -189,7 +189,7 @@
 	KASSERT(VIRT_IN_DMAP(va),					\
 	    ("%s: VA out of range, VA: 0x%lx", __func__,		\
 	    (vm_offset_t)(va)));					\
-	((va) & ~DMAP_MIN_ADDRESS) + dmap_phys_base;			\
+	((va) - DMAP_MIN_ADDRESS) + dmap_phys_base;			\
 })
 
 #define	VM_MIN_USER_ADDRESS	(0x0000000000000000UL)