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According to Chuck Silvers, pmap_copy_page() and pmap_zero_page() don't

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need to mess with the referenced and modified flags, since they're only
called when a page is being initialised, and is about to have them cleared.
Make this so.
This commit is contained in:
bjh21 2002-08-16 21:16:48 +00:00
parent 2abe377059
commit 4d7743ff17
1 changed files with 2 additions and 13 deletions
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15
sys/arch/acorn26/acorn26/pmap.c
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@ -1,4 +1,4 @@
/* $NetBSD: pmap.c,v 1.3 2002/04/12 18:50:30 thorpej Exp $ */
/* $NetBSD: pmap.c,v 1.4 2002/08/16 21:16:48 bjh21 Exp $ */
/*-
* Copyright (c) 1997, 1998, 2000 Ben Harris
* All rights reserved.
@ -102,7 +102,7 @@
#include <sys/param.h>
__KERNEL_RCSID(0, "$NetBSD: pmap.c,v 1.3 2002/04/12 18:50:30 thorpej Exp $");
__KERNEL_RCSID(0, "$NetBSD: pmap.c,v 1.4 2002/08/16 21:16:48 bjh21 Exp $");
#include <sys/kernel.h> /* for cold */
#include <sys/malloc.h>
@ -1070,30 +1070,19 @@ pmap_find(paddr_t pa)
void
pmap_zero_page(paddr_t pa)
{
int ppn;
UVMHIST_FUNC("pmap_zero_page");
UVMHIST_CALLED(pmaphist);
bzero(pmap_find(pa), PAGE_SIZE);
ppn = atop(pa);
pv_table[ppn].pv_pflags |= PV_MODIFIED | PV_REFERENCED;
pmap_update_page(ppn);
}
void
pmap_copy_page(paddr_t src, paddr_t dest)
{
int sppn, dppn;
UVMHIST_FUNC("pmap_copy_page");
UVMHIST_CALLED(pmaphist);
memcpy(pmap_find(dest), pmap_find(src), PAGE_SIZE);
sppn = atop(src);
dppn = atop(dest);
pv_table[sppn].pv_pflags |= PV_REFERENCED;
pmap_update_page(sppn);
pv_table[dppn].pv_pflags |= PV_MODIFIED | PV_REFERENCED;
pmap_update_page(dppn);
}
#ifdef PMAP_DEBUG_MODIFIED