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Deal with low addresses in pmap_k{enter_remove}. port-i386/10966.

This commit is contained in:
thorpej 2000-09-07 06:06:52 +00:00
parent 11d2a68c1e
commit 50668be499
1 changed files with 13 additions and 4 deletions
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17
sys/arch/i386/i386/pmap.c
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@ -1,4 +1,4 @@
/* $NetBSD: pmap.c,v 1.101 2000/09/06 22:09:58 thorpej Exp $ */
/* $NetBSD: pmap.c,v 1.102 2000/09/07 06:06:52 thorpej Exp $ */
/*
*
@ -612,7 +612,10 @@ pmap_kenter_pa(va, pa, prot)
{
pt_entry_t *pte, opte;
pte = kvtopte(va);
if (va < VM_MIN_KERNEL_ADDRESS)
pte = vtopte(va);
else
pte = kvtopte(va);
opte = *pte;
*pte = pa | ((prot & VM_PROT_WRITE)? PG_RW : PG_RO) |
PG_V | pmap_pg_g; /* zap! */
@ -640,7 +643,10 @@ pmap_kremove(va, len)
len >>= PAGE_SHIFT;
for ( /* null */ ; len ; len--, va += NBPG) {
pte = kvtopte(va);
if (va < VM_MIN_KERNEL_ADDRESS)
pte = vtopte(va);
else
pte = kvtopte(va);
#ifdef DIAGNOSTIC
if (*pte & PG_PVLIST)
panic("pmap_kremove: PG_PVLIST mapping for 0x%lx\n",
@ -677,7 +683,10 @@ pmap_kenter_pgs(va, pgs, npgs)
for (lcv = 0 ; lcv < npgs ; lcv++) {
tva = va + lcv * NBPG;
pte = kvtopte(tva);
if (va < VM_MIN_KERNEL_ADDRESS)
pte = vtopte(tva);
else
pte = kvtopte(tva);
opte = *pte;
*pte = VM_PAGE_TO_PHYS(pgs[lcv]) | PG_RW | PG_V | pmap_pg_g;
#if defined(I386_CPU)