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Use the VM_MIN_ADDRESS `constant' for the offset calculation of virtual

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address to a logical page address.
This commit is contained in:
reinoud 2011-08-24 11:30:59 +00:00
parent 48993feb86
commit 7dc730ef51
1 changed files with 5 additions and 5 deletions
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10
sys/arch/usermode/usermode/pmap.c
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@ -1,4 +1,4 @@
/* $NetBSD: pmap.c,v 1.26 2011/08/24 11:02:31 reinoud Exp $ */
/* $NetBSD: pmap.c,v 1.27 2011/08/24 11:30:59 reinoud Exp $ */
/*-
* Copyright (c) 2011 Reinoud Zandijk <reinoud@NetBSD.org>
@ -27,7 +27,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: pmap.c,v 1.26 2011/08/24 11:02:31 reinoud Exp $");
__KERNEL_RCSID(0, "$NetBSD: pmap.c,v 1.27 2011/08/24 11:30:59 reinoud Exp $");
#include "opt_memsize.h"
#include "opt_kmempages.h"
@ -414,7 +414,7 @@ static void
pmap_page_activate(struct pv_entry *pv)
{
paddr_t pa = pv->pv_ppn * PAGE_SIZE;
vaddr_t va = pv->pv_lpn * PAGE_SIZE + kmem_ext_start; /* XXX V->A make new var */
vaddr_t va = pv->pv_lpn * PAGE_SIZE + VM_MIN_ADDRESS; /* V->A */
void *addr;
@ -471,7 +471,7 @@ pmap_do_enter(pmap_t pmap, vaddr_t va, paddr_t pa, vm_prot_t prot, uint flags, i
/* to page numbers */
ppn = atop(pa);
lpn = atop(va - kmem_ext_start); /* XXX V->A make new var */
lpn = atop(va - VM_MIN_ADDRESS); /* V->A */
#ifdef DIAGNOSTIC
if ((va < kmem_k_start) || (va > kmem_user_end))
panic("pmap_do_enter: invalid va isued\n");
@ -630,7 +630,7 @@ pmap_extract(pmap_t pmap, vaddr_t va, paddr_t *pap)
/* TODO protect against roque values */
aprint_debug("pmap_extract: extracting va %p\n", (void *) va);
pv = pmap->pm_entries[atop(va - kmem_ext_start)]; /* XXX V->A make new var */
pv = pmap->pm_entries[atop(va - VM_MIN_ADDRESS)]; /* V->A */
if (pv == NULL)
return false;