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Use pmap_kenter_pa() to map pages to dump, not pmap_enter(), so that it's more 

resistant to VM lossage.
This commit is contained in:
mycroft 2004-07-22 15:12:46 +00:00
parent 6342bdaf2f
commit f85e332440
1 changed files with 6 additions and 5 deletions
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11
sys/arch/i386/i386/machdep.c
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@ -1,4 +1,4 @@
/* $NetBSD: machdep.c,v 1.555 2004/07/03 21:02:09 mycroft Exp $ */
/* $NetBSD: machdep.c,v 1.556 2004/07/22 15:12:46 mycroft Exp $ */
/*-
* Copyright (c) 1996, 1997, 1998, 2000 The NetBSD Foundation, Inc.
@ -72,7 +72,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: machdep.c,v 1.555 2004/07/03 21:02:09 mycroft Exp $");
__KERNEL_RCSID(0, "$NetBSD: machdep.c,v 1.556 2004/07/22 15:12:46 mycroft Exp $");
#include "opt_beep.h"
#include "opt_compat_ibcs2.h"
@ -963,7 +963,7 @@ reserve_dumppages(vaddr_t p)
void
dumpsys()
{
u_long totalbytesleft, bytes, i, n, memseg;
u_long totalbytesleft, bytes, i, n, m, memseg;
u_long maddr;
int psize;
daddr_t blkno;
@ -1029,8 +1029,9 @@ dumpsys()
if (n > BYTES_PER_DUMP)
n = BYTES_PER_DUMP;
(void) pmap_map(dumpspace, maddr, maddr + n,
VM_PROT_READ);
for (m = 0; m < n; m += NBPG)
pmap_kenter_pa(dumpspace + m, maddr + m,
VM_PROT_READ);
error = (*dump)(dumpdev, blkno, (caddr_t)dumpspace, n);
if (error)