[src/trunk]: src/sys/arch/powerpc/powerpc Switch vmap*buf back to using pmap_...

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

details:   https://anonhg.NetBSD.org/src/rev/1818a2f234ff
branches:  trunk
changeset: 535107:1818a2f234ff
user:      matt <matt%NetBSD.org@localhost>
date:      Sat Aug 10 16:28:49 2002 +0000

description:
Switch vmap*buf back to using pmap_enter/pmap_remove.  This is so that
accesses to the buffer will cause the reference and modified bits for
the pages to be udpated appropriately.

diffstat:

 sys/arch/powerpc/powerpc/vm_machdep.c |  15 ++++++++++++---
 1 files changed, 12 insertions(+), 3 deletions(-)

diffs (36 lines):

diff -r 775ffc1d7301 -r 1818a2f234ff sys/arch/powerpc/powerpc/vm_machdep.c
--- a/sys/arch/powerpc/powerpc/vm_machdep.c     Sat Aug 10 16:26:14 2002 +0000
+++ b/sys/arch/powerpc/powerpc/vm_machdep.c     Sat Aug 10 16:28:49 2002 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: vm_machdep.c,v 1.40 2002/07/28 07:07:46 chs Exp $      */
+/*     $NetBSD: vm_machdep.c,v 1.41 2002/08/10 16:28:49 matt Exp $     */
 
 /*
  * Copyright (C) 1995, 1996 Wolfgang Solfrank.
@@ -366,7 +366,12 @@
        for (; len > 0; len -= NBPG) {
                (void) pmap_extract(vm_map_pmap(&bp->b_proc->p_vmspace->vm_map),
                    faddr, &pa);
-               pmap_kenter_pa(taddr, pa, VM_PROT_READ|VM_PROT_WRITE);
+               /*
+                * 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);
                faddr += NBPG;
                taddr += NBPG;
        }
@@ -391,7 +396,11 @@
        addr = trunc_page((vaddr_t)bp->b_data);
        off = (vaddr_t)bp->b_data - addr;
        len = round_page(off + len);
-       pmap_kremove(addr, len);
+       /*
+        * Since the pages were entered by pmap_enter, use pmap_remove
+        * to remove them.
+        */
+       pmap_remove(pmap_kernel(), addr, addr + len);
        pmap_update(pmap_kernel());
        uvm_km_free_wakeup(phys_map, addr, len);
        bp->b_data = bp->b_saveaddr;