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Export a pointer to the Virtual Page Table.

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This commit is contained in:
thorpej 1998-03-07 03:15:43 +00:00
parent f7d64ef778
commit cd7d081d02
2 changed files with 11 additions and 5 deletions
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12
sys/arch/alpha/alpha/pmap.old.c
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@ -1,4 +1,4 @@
/* $NetBSD: pmap.old.c,v 1.47 1998/03/07 01:43:54 thorpej Exp $ */
/* $NetBSD: pmap.old.c,v 1.48 1998/03/07 03:15:43 thorpej Exp $ */
/*-
* Copyright (c) 1998 The NetBSD Foundation, Inc.
@ -137,7 +137,7 @@
#include <sys/cdefs.h> /* RCS ID & Copyright macro defns */
__KERNEL_RCSID(0, "$NetBSD: pmap.old.c,v 1.47 1998/03/07 01:43:54 thorpej Exp $");
__KERNEL_RCSID(0, "$NetBSD: pmap.old.c,v 1.48 1998/03/07 03:15:43 thorpej Exp $");
#include <sys/param.h>
#include <sys/systm.h>
@ -272,6 +272,11 @@ int protection_codes[2][8];
pt_entry_t *Lev1map, *Lev2map, *Lev3map;
vm_size_t Lev2mapsize, Lev3mapsize;
/*
* Virtual Page Table.
*/
pt_entry_t *VPT;
/*
* Segtabzero is an empty segment table which all processes share til they
* reference something.
@ -514,7 +519,8 @@ pmap_bootstrap(ptaddr)
<< PG_SHIFT;
pte |= PG_V | PG_KRE | PG_KWE; /* NOTE NO ASM */
Lev1map[l1pte_index(VPTBASE)] = pte;
VPT = (pt_entry_t *)VPTBASE;
/*
* Set up level 2 page table.
*/

4
sys/arch/alpha/include/pmap.old.h
View File

@ -1,4 +1,4 @@
/* $NetBSD: pmap.old.h,v 1.23 1998/03/06 23:41:02 thorpej Exp $ */
/* $NetBSD: pmap.old.h,v 1.24 1998/03/07 03:15:43 thorpej Exp $ */
/*-
* Copyright (c) 1998 The NetBSD Foundation, Inc.
@ -173,8 +173,8 @@ struct pv_page {
#define pmap_resident_count(pmap) ((pmap)->pm_stats.resident_count)
#define pmap_wired_count(pmap) ((pmap)->pm_stats.wired_count)
extern pt_entry_t *Sysmap;
extern char *vmmap; /* map for mem, dumps, etc. */
extern pt_entry_t *VPT; /* Virtual Page Table */
#define PMAP_STEAL_MEMORY /* enable pmap_steal_memory() */