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In pmap_page_protect(), don't (try to) use the pv_entry_t we just

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freed in order to find the pmap to unlock.
This commit is contained in:
ross 1999-08-14 06:19:49 +00:00
parent 740b9848cc
commit 4ed22602e7
1 changed files with 6 additions and 5 deletions
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11
sys/arch/alpha/alpha/pmap.c
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@ -1,4 +1,4 @@
/* $NetBSD: pmap.c,v 1.108 1999/08/10 23:35:44 thorpej Exp $ */
/* $NetBSD: pmap.c,v 1.109 1999/08/14 06:19:49 ross Exp $ */
/*-
* Copyright (c) 1998, 1999 The NetBSD Foundation, Inc.
@ -155,7 +155,7 @@
#include <sys/cdefs.h> /* RCS ID & Copyright macro defns */
__KERNEL_RCSID(0, "$NetBSD: pmap.c,v 1.108 1999/08/10 23:35:44 thorpej Exp $");
__KERNEL_RCSID(0, "$NetBSD: pmap.c,v 1.109 1999/08/14 06:19:49 ross Exp $");
#include <sys/param.h>
#include <sys/systm.h>
@ -1428,9 +1428,10 @@ pmap_page_protect(pa, prot)
simple_lock(&pvh->pvh_slock);
s = splimp(); /* XXX needed w/ PMAP_NEW? */
for (pv = LIST_FIRST(&pvh->pvh_list); pv != NULL; pv = nextpv) {
nextpv = LIST_NEXT(pv, pv_list);
struct pmap *pmap = pv->pv_pmap;
PMAP_LOCK(pv->pv_pmap, ps);
nextpv = LIST_NEXT(pv, pv_list);
PMAP_LOCK(pmap, ps);
#ifdef DEBUG
if (pmap_pte_v(pmap_l2pte(pv->pv_pmap, pv->pv_va, NULL)) == 0 ||
pmap_pte_pa(pv->pv_pte) != pa)
@ -1449,7 +1450,7 @@ pmap_page_protect(pa, prot)
}
}
#endif
PMAP_UNLOCK(pv->pv_pmap, ps);
PMAP_UNLOCK(pmap, ps);
}
splx(s);