[src/trunk]: src/sys/arch/arm/arm32 When figuring out the physical size for d...

[matt <matt%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/b44b9f9443a2
branches:  trunk
changeset: 795435:b44b9f9443a2
user:      matt <matt%NetBSD.org@localhost>
date:      Sun Apr 13 02:24:16 2014 +0000

description:
When figuring out the physical size for direct-mapped systems, round up
to L1_SS_SIZE.

diffstat:

 sys/arch/arm/arm32/arm32_kvminit.c |  13 +++++++------
 1 files changed, 7 insertions(+), 6 deletions(-)

diffs (39 lines):

diff -r e7508d538436 -r b44b9f9443a2 sys/arch/arm/arm32/arm32_kvminit.c
--- a/sys/arch/arm/arm32/arm32_kvminit.c        Sun Apr 13 02:23:00 2014 +0000
+++ b/sys/arch/arm/arm32/arm32_kvminit.c        Sun Apr 13 02:24:16 2014 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: arm32_kvminit.c,v 1.28 2014/04/11 04:19:47 matt Exp $  */
+/*     $NetBSD: arm32_kvminit.c,v 1.29 2014/04/13 02:24:16 matt Exp $  */
 
 /*
  * Copyright (c) 2002, 2003, 2005  Genetec Corporation.  All rights reserved.
@@ -122,7 +122,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: arm32_kvminit.c,v 1.28 2014/04/11 04:19:47 matt Exp $");
+__KERNEL_RCSID(0, "$NetBSD: arm32_kvminit.c,v 1.29 2014/04/13 02:24:16 matt Exp $");
 
 #include <sys/param.h>
 #include <sys/device.h>
@@ -408,15 +408,16 @@
         * We can only use address beneath kernel_vm_base to map physical
         * memory.
         */
-       KASSERT(kernel_vm_base >= physical_end - physical_start);
+       const psize_t physical_size =
+           roundup(physical_end - physical_start, L1_SS_SIZE);
+       KASSERT(kernel_vm_base >= physical_size);
        /*
         * If we don't have enough memory via TTBR1, we have use addresses
         * from TTBR0 to map some of the physical memory.  But try to use as
         * much high memory space as possible.
         */
-       if (kernel_vm_base - KERNEL_BASE < physical_end - physical_start) {
-               pmap_directbase = kernel_vm_base
-                   - (physical_end - physical_start);
+       if (kernel_vm_base - KERNEL_BASE < physical_size) {
+               pmap_directbase = kernel_vm_base - physical_size;
                printf("%s: changing pmap_directbase to %#lx\n", __func__,
                    pmap_directbase);
        }