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Remove code from pmap_fault() that ws trying to do referenced/modified 

emulation on kernel pages (and getting it wrong).
This commit is contained in:
bjh21 2001-04-13 15:09:35 +00:00
parent 0fc6449078
commit 991d163aa2
1 changed files with 3 additions and 15 deletions
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18
sys/arch/arm26/arm26/pmap.c
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@ -1,4 +1,4 @@
/* $NetBSD: pmap.c,v 1.18 2001/03/15 06:10:36 chs Exp $ */
/* $NetBSD: pmap.c,v 1.19 2001/04/13 15:09:35 bjh21 Exp $ */
/*-
* Copyright (c) 1997, 1998, 2000 Ben Harris
* All rights reserved.
@ -105,7 +105,7 @@
#include <sys/param.h>
__KERNEL_RCSID(0, "$NetBSD: pmap.c,v 1.18 2001/03/15 06:10:36 chs Exp $");
__KERNEL_RCSID(0, "$NetBSD: pmap.c,v 1.19 2001/04/13 15:09:35 bjh21 Exp $");
#include <sys/kernel.h> /* for cold */
#include <sys/malloc.h>
@ -808,19 +808,7 @@ pmap_fault(struct pmap *pmap, vaddr_t va, vm_prot_t atype)
return FALSE;
ppn = pv->pv_ppn;
ppv = &pv_table[ppn];
if (pmap == pmap_kernel()) {
/*
* If we allow the kernel to access the page, we can't
* stop it writing to it as well, so we have to handle
* referenced and modified bits together.
*/
if ((ppv->pv_pflags & PV_REFERENCED) == 0 ||
(ppv->pv_pflags & PV_MODIFIED) == 0) {
ppv->pv_pflags |= PV_REFERENCED | PV_MODIFIED;
pmap_update_page(ppn);
return TRUE;
}
} else {
if (pmap != pmap_kernel()) {
if ((ppv->pv_pflags & PV_REFERENCED) == 0) {
ppv->pv_pflags |= PV_REFERENCED;
pmap_update_page(ppn);