[src/trunk]: src/sys/arch/sparc/sparc mmu_pagein: refuse kernel space address...

[pk <pk%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/b2f7464e535b
branches:  trunk
changeset: 474117:b2f7464e535b
user:      pk <pk%NetBSD.org@localhost>
date:      Mon Jun 28 14:41:43 1999 +0000

description:
mmu_pagein: refuse kernel space addresses here.

diffstat:

 sys/arch/sparc/sparc/pmap.c |  9 +++++++--
 1 files changed, 7 insertions(+), 2 deletions(-)

diffs (36 lines):

diff -r dae36dbdac2c -r b2f7464e535b sys/arch/sparc/sparc/pmap.c
--- a/sys/arch/sparc/sparc/pmap.c       Mon Jun 28 13:32:43 1999 +0000
+++ b/sys/arch/sparc/sparc/pmap.c       Mon Jun 28 14:41:43 1999 +0000
@@ -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 @@
 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 @@
 
        vr = VA_VREG(va);
        vs = VA_VSEG(va);
+
        rp = &pm->pm_regmap[vr];
 #ifdef DEBUG
 if (pm == pmap_kernel())