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Preload the referenced and modified bits when entering a page due to a fault.

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This commit is contained in:
mycroft 2005-03-04 06:26:58 +00:00
parent 7d64f202fc
commit 8d0711abed
1 changed files with 9 additions and 2 deletions
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11
sys/arch/i386/i386/pmap.c
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@ -1,4 +1,4 @@
/* $NetBSD: pmap.c,v 1.180 2005/01/01 21:00:06 yamt Exp $ */
/* $NetBSD: pmap.c,v 1.181 2005/03/04 06:26:58 mycroft Exp $ */
/*
*
@ -60,7 +60,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: pmap.c,v 1.180 2005/01/01 21:00:06 yamt Exp $");
__KERNEL_RCSID(0, "$NetBSD: pmap.c,v 1.181 2005/03/04 06:26:58 mycroft Exp $");
#include "opt_cputype.h"
#include "opt_user_ldt.h"
@ -3307,6 +3307,13 @@ pmap_enter(pmap, va, pa, prot, flags)
npte |= (PG_u | PG_RW); /* XXXCDC: no longer needed? */
if (pmap == pmap_kernel())
npte |= pmap_pg_g;
#if 1
if (flags & VM_PROT_ALL) {
npte |= PG_U;
if (flags & VM_PROT_WRITE)
npte |= PG_M;
}
#endif
/* get lock */
PMAP_MAP_TO_HEAD_LOCK();