[src/trunk]: src/sys/arch/arm/arm32 cache pmap in vmapbuf.

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

details:   https://anonhg.NetBSD.org/src/rev/91de2f7f1903
branches:  trunk
changeset: 336981:91de2f7f1903
user:      matt <matt%NetBSD.org@localhost>
date:      Sun Mar 29 09:47:48 2015 +0000

description:
cache pmap in vmapbuf.

diffstat:

 sys/arch/arm/arm32/vm_machdep.c |  9 +++++----
 1 files changed, 5 insertions(+), 4 deletions(-)

diffs (40 lines):

diff -r 411ed0fc434c -r 91de2f7f1903 sys/arch/arm/arm32/vm_machdep.c
--- a/sys/arch/arm/arm32/vm_machdep.c   Sun Mar 29 09:43:26 2015 +0000
+++ b/sys/arch/arm/arm32/vm_machdep.c   Sun Mar 29 09:47:48 2015 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: vm_machdep.c,v 1.69 2014/03/10 05:18:34 matt Exp $     */
+/*     $NetBSD: vm_machdep.c,v 1.70 2015/03/29 09:47:48 matt Exp $     */
 
 /*
  * Copyright (c) 1994-1998 Mark Brinicombe.
@@ -44,7 +44,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: vm_machdep.c,v 1.69 2014/03/10 05:18:34 matt Exp $");
+__KERNEL_RCSID(0, "$NetBSD: vm_machdep.c,v 1.70 2015/03/29 09:47:48 matt Exp $");
 
 #include "opt_armfpe.h"
 #include "opt_pmap_debug.h"
@@ -216,9 +216,11 @@
 int
 vmapbuf(struct buf *bp, vsize_t len)
 {
+       struct pmap * const pm = vm_map_pmap(&bp->b_proc->p_vmspace->vm_map);
        vaddr_t faddr, taddr, off;
        paddr_t fpa;
 
+       KASSERT(pm != pmap_kernel());
 
 #ifdef PMAP_DEBUG
        if (pmap_debug_level > 0)
@@ -242,8 +244,7 @@
         * non-NULL.
         */
        while (len) {
-               (void) pmap_extract(vm_map_pmap(&bp->b_proc->p_vmspace->vm_map),
-                   faddr, &fpa);
+               (void) pmap_extract(pm, faddr, &fpa);
                pmap_kenter_pa(taddr, fpa, VM_PROT_READ|VM_PROT_WRITE,
                    PMAP_WIRED);
                faddr += PAGE_SIZE;