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That last commit left pagemove() entering random mappings...

This commit is contained in:
gwr 1999-04-07 06:07:59 +00:00
parent 466895623f
commit 0678dfb266
1 changed files with 19 additions and 14 deletions
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33
sys/arch/sun3/sun3/vm_machdep.c
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@ -1,4 +1,4 @@
/* $NetBSD: vm_machdep.c,v 1.48 1999/03/26 23:41:37 mycroft Exp $ */
/* $NetBSD: vm_machdep.c,v 1.49 1999/04/07 06:07:59 gwr Exp $ */
/*
* Copyright (c) 1994, 1995 Gordon W. Ross
@ -295,26 +295,31 @@ cpu_coredump(p, vp, cred, chdr)
* and size must be a multiple of CLSIZE.
*/
void
pagemove(fptr, tptr, len)
caddr_t fptr, tptr;
pagemove(from, to, len)
caddr_t from, to;
size_t len;
{
struct pmap *kpmap;
vm_offset_t fva, tva, pa;
struct pmap *kpmap = vm_map_pmap(kernel_map);
vm_prot_t prot = VM_PROT_READ|VM_PROT_WRITE;
vaddr_t fva = (vaddr_t)from;
vaddr_t tva = (vaddr_t)to;
paddr_t pa;
fva = (vm_offset_t)fptr;
tva = (vm_offset_t)tptr;
#ifdef DIAGNOSTIC
if (len & PGOFSET || fva & PGOFSET || tva & PGOFSET)
#ifdef DEBUG
if (len & CLOFSET)
panic("pagemove");
#endif
kpmap = vm_map_pmap(kernel_map);
while (len > 0) {
/* this does the cache flush work itself */
pa = pmap_extract(kpmap, fva);
#ifdef DEBUG
if (pa == 0)
panic("pagemove 2");
if (pmap_extract(kpmap, tva) != 0)
panic("pagemove 3");
#endif
/* pmap_remove does the necessary cache flush.*/
pmap_remove(kpmap, fva, fva + NBPG);
pmap_enter(kpmap, tva, pa,
VM_PROT_READ|VM_PROT_WRITE, 1, VM_PROT_READ|VM_PROT_WRITE);
pmap_enter(kpmap, tva, pa, prot, 1, prot);
fva += NBPG;
tva += NBPG;
len -= NBPG;