Index: sys/arch/aarch64/aarch64/efi_machdep.c
===================================================================
RCS file: /cvsroot/src/sys/arch/aarch64/aarch64/efi_machdep.c,v
retrieving revision 1.5
diff -u -p -r1.5 efi_machdep.c
--- sys/arch/aarch64/aarch64/efi_machdep.c	16 Dec 2019 00:03:50 -0000	1.5
+++ sys/arch/aarch64/aarch64/efi_machdep.c	10 Jan 2020 22:17:06 -0000
@@ -52,18 +52,16 @@ arm_efirt_md_map_range(vaddr_t va, paddr
 
 	switch (type) {
 	case ARM_EFIRT_MEM_CODE:
-		attr = LX_BLKPAG_OS_READ | LX_BLKPAG_OS_WRITE |
-		       LX_BLKPAG_AF | LX_BLKPAG_AP_RW | LX_BLKPAG_UXN |
+		// XXXNH RO, hmm
+		attr = LX_BLKPAG_AF | LX_BLKPAG_AP_RW | LX_BLKPAG_UXN |
 		       LX_BLKPAG_ATTR_NORMAL_WB;
 		break;
 	case ARM_EFIRT_MEM_DATA:
-		attr = LX_BLKPAG_OS_READ | LX_BLKPAG_OS_WRITE |
-		       LX_BLKPAG_AF | LX_BLKPAG_AP_RW | LX_BLKPAG_UXN | LX_BLKPAG_PXN |
+		attr = LX_BLKPAG_AF | LX_BLKPAG_AP_RW | LX_BLKPAG_UXN | LX_BLKPAG_PXN |
 		       LX_BLKPAG_ATTR_NORMAL_WB;
 		break;
 	case ARM_EFIRT_MEM_MMIO:
-		attr = LX_BLKPAG_OS_READ | LX_BLKPAG_OS_WRITE |
-		       LX_BLKPAG_AF | LX_BLKPAG_AP_RW | LX_BLKPAG_UXN | LX_BLKPAG_PXN |
+		attr = LX_BLKPAG_AF | LX_BLKPAG_AP_RW | LX_BLKPAG_UXN | LX_BLKPAG_PXN |
 		       LX_BLKPAG_ATTR_DEVICE_MEM;
 		break;
 	default: