[src/trunk]: src/sys/arch/powerpc/powerpc More refinement, only map B_READ bu...

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

details:   https://anonhg.NetBSD.org/src/rev/a0faf4adbbe6
branches:  trunk
changeset: 535119:a0faf4adbbe6
user:      matt <matt%NetBSD.org@localhost>
date:      Sat Aug 10 18:49:56 2002 +0000

description:
More refinement, only map B_READ buf with VM_PROT_WRITE (all pages always
have VM_PROT_READ).  Also, pass PMAP_WIRED to pmap_enter (for non-mpc6xx
pmaps).  This will give pmap clues about flushing any "icache ok state".

diffstat:

 sys/arch/powerpc/powerpc/vm_machdep.c |  6 +++---
 1 files changed, 3 insertions(+), 3 deletions(-)

diffs (27 lines):

diff -r 7c532517a9df -r a0faf4adbbe6 sys/arch/powerpc/powerpc/vm_machdep.c
--- a/sys/arch/powerpc/powerpc/vm_machdep.c     Sat Aug 10 17:25:01 2002 +0000
+++ b/sys/arch/powerpc/powerpc/vm_machdep.c     Sat Aug 10 18:49:56 2002 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: vm_machdep.c,v 1.41 2002/08/10 16:28:49 matt Exp $     */
+/*     $NetBSD: vm_machdep.c,v 1.42 2002/08/10 18:49:56 matt Exp $     */
 
 /*
  * Copyright (C) 1995, 1996 Wolfgang Solfrank.
@@ -350,6 +350,7 @@
        vaddr_t faddr, taddr;
        vsize_t off;
        paddr_t pa;
+       int prot = VM_PROT_READ | ((bp->b_flags & B_READ) ? VM_PROT_WRITE : 0);
 
 #ifdef DIAGNOSTIC
        if (!(bp->b_flags & B_PHYS))
@@ -370,8 +371,7 @@
                 * Use pmap_enter so the referenced and modified bits are
                 * appropriately set.
                 */
-               pmap_enter(pmap_kernel(), taddr, pa,
-                   VM_PROT_READ|VM_PROT_WRITE, VM_PROT_READ|VM_PROT_WRITE);
+               pmap_enter(pmap_kernel(), taddr, pa, prot, prot|PMAP_WIRED);
                faddr += NBPG;
                taddr += NBPG;
        }