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Don't unmap the PROM's first four physical/virtual pages 

inside pmap_bootstrap, instead we will wait until we have
installed our vector table.
This commit is contained in:
fredette 2001-06-27 03:41:27 +00:00
parent d5598f2f68
commit 08068ecc5d
1 changed files with 6 additions and 5 deletions
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11
sys/arch/sun2/sun2/pmap.c
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@ -1,4 +1,4 @@
/* $NetBSD: pmap.c,v 1.12 2001/06/19 12:59:17 wiz Exp $ */
/* $NetBSD: pmap.c,v 1.13 2001/06/27 03:41:27 fredette Exp $ */
/*-
* Copyright (c) 1996 The NetBSD Foundation, Inc.
@ -1684,12 +1684,13 @@ pmap_bootstrap(nextva)
/*
* Physical/virtual pages zero through three are used by the
* PROM. prom_init has already saved the PTEs, now we get
* to unmap the pages.
* PROM. prom_init has already saved the PTEs, but we don't
* want to unmap the pages until we've installed our own
* vector table - just in case something happens before then
* and we drop into the PROM.
*/
eva = va + NBPG * 4;
for(; va < eva; va += NBPG)
set_pte(va, PG_INVAL);
va = eva;
/*
* We use pages four through seven for the msgbuf.