[src/trunk]: src/sys/arch/arm/arm32 If using arm32_kvminit, don't bother mapp...

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

details:   https://anonhg.NetBSD.org/src/rev/979deb40f8bb
branches:  trunk
changeset: 795283:979deb40f8bb
user:      matt <matt%NetBSD.org@localhost>
date:      Sat Apr 05 22:36:18 2014 +0000

description:
If using arm32_kvminit, don't bother mapping msgbuf since it's already mapped.

diffstat:

 sys/arch/arm/arm32/arm32_kvminit.c |   6 ++++--
 sys/arch/arm/arm32/arm32_machdep.c |  16 +++++++++-------
 2 files changed, 13 insertions(+), 9 deletions(-)

diffs (78 lines):

diff -r 476dd507fd66 -r 979deb40f8bb sys/arch/arm/arm32/arm32_kvminit.c
--- a/sys/arch/arm/arm32/arm32_kvminit.c        Sat Apr 05 22:05:12 2014 +0000
+++ b/sys/arch/arm/arm32/arm32_kvminit.c        Sat Apr 05 22:36:18 2014 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: arm32_kvminit.c,v 1.26 2014/04/01 05:37:35 skrll Exp $ */
+/*     $NetBSD: arm32_kvminit.c,v 1.27 2014/04/05 22:36:18 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 1.26 2014/04/01 05:37:35 skrll Exp $");
+__KERNEL_RCSID(0, "$NetBSD: arm32_kvminit.c,v 1.27 2014/04/05 22:36:18 matt Exp $");
 
 #include <sys/param.h>
 #include <sys/device.h>
@@ -144,6 +144,7 @@
 
 struct bootmem_info bootmem_info;
 
+extern void *msgbufaddr;
 paddr_t msgbufphys;
 paddr_t physical_start;
 paddr_t physical_end;
@@ -549,6 +550,7 @@
            VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE, false);
        add_pages(bmi, &msgbuf);
        msgbufphys = msgbuf.pv_pa;
+       msgbufaddr = (void *)msgbuf.pv_va;
 
        if (map_vectors_p) {
                /*
diff -r 476dd507fd66 -r 979deb40f8bb sys/arch/arm/arm32/arm32_machdep.c
--- a/sys/arch/arm/arm32/arm32_machdep.c        Sat Apr 05 22:05:12 2014 +0000
+++ b/sys/arch/arm/arm32/arm32_machdep.c        Sat Apr 05 22:36:18 2014 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: arm32_machdep.c,v 1.102 2014/03/28 21:39:09 matt Exp $ */
+/*     $NetBSD: arm32_machdep.c,v 1.103 2014/04/05 22:36:18 matt Exp $ */
 
 /*
  * Copyright (c) 1994-1998 Mark Brinicombe.
@@ -42,7 +42,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: arm32_machdep.c,v 1.102 2014/03/28 21:39:09 matt Exp $");
+__KERNEL_RCSID(0, "$NetBSD: arm32_machdep.c,v 1.103 2014/04/05 22:36:18 matt Exp $");
 
 #include "opt_modular.h"
 #include "opt_md.h"
@@ -257,7 +257,6 @@
 {
        vaddr_t minaddr;
        vaddr_t maxaddr;
-       u_int loop;
        char pbuf[9];
 
        /*
@@ -284,10 +283,13 @@
         */
 
        /* msgbufphys was setup during the secondary boot strap */
-       for (loop = 0; loop < btoc(MSGBUFSIZE); ++loop)
-               pmap_kenter_pa((vaddr_t)msgbufaddr + loop * PAGE_SIZE,
-                   msgbufphys + loop * PAGE_SIZE,
-                   VM_PROT_READ|VM_PROT_WRITE, 0);
+       if (!pmap_extract(pmap_kernel(), (vaddr_t)msgbufaddr, NULL)) {
+               for (u_int loop = 0; loop < btoc(MSGBUFSIZE); ++loop) {
+                       pmap_kenter_pa((vaddr_t)msgbufaddr + loop * PAGE_SIZE,
+                           msgbufphys + loop * PAGE_SIZE,
+                           VM_PROT_READ|VM_PROT_WRITE, 0);
+               }
+       }
        pmap_update(pmap_kernel());
        initmsgbuf(msgbufaddr, round_page(MSGBUFSIZE));