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mmu_pagein: refuse kernel space addresses here.

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This commit is contained in:
pk 1999-06-28 14:41:43 +00:00
parent e07c905939
commit 5814a13657
1 changed files with 7 additions and 2 deletions
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9
sys/arch/sparc/sparc/pmap.c
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@ -1,4 +1,4 @@
/* $NetBSD: pmap.c,v 1.147 1999/06/17 19:23:27 thorpej Exp $ */
/* $NetBSD: pmap.c,v 1.148 1999/06/28 14:41:43 pk Exp $ */
/*
* Copyright (c) 1996
@ -1697,13 +1697,17 @@ region_free(pm, smeg)
int
mmu_pagein(pm, va, prot)
struct pmap *pm;
int va, prot;
vaddr_t va;
int prot;
{
int *pte;
int vr, vs, pmeg, i, s, bits;
struct regmap *rp;
struct segmap *sp;
if (va >= (unsigned long)KERNBASE)
return (0);
if (prot != VM_PROT_NONE)
bits = PG_V | ((prot & VM_PROT_WRITE) ? PG_W : 0);
else
@ -1711,6 +1715,7 @@ mmu_pagein(pm, va, prot)
vr = VA_VREG(va);
vs = VA_VSEG(va);
rp = &pm->pm_regmap[vr];
#ifdef DEBUG
if (pm == pmap_kernel())