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fix bad size calculation for kernel memory mappings, as in when

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allocating 1 byte from a page alligned address.
reported (with fix) in pr-3441 from Matthias Drochner
This commit is contained in:
perry 1997-04-02 23:44:44 +00:00
parent aa88a240fe
commit e32bb7d002
1 changed files with 3 additions and 3 deletions
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6
sys/arch/i386/i386/machdep.c
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@ -1,4 +1,4 @@
/* $NetBSD: machdep.c,v 1.229 1997/03/27 21:01:31 thorpej Exp $ */
/* $NetBSD: machdep.c,v 1.230 1997/04/02 23:44:44 perry Exp $ */
/*-
* Copyright (c) 1993, 1994, 1995, 1996 Charles M. Hannum. All rights reserved.
@ -1793,7 +1793,7 @@ bus_mem_add_mapping(bpa, size, cacheable, bshp)
vm_offset_t va;
pa = i386_trunc_page(bpa);
endpa = i386_round_page((bpa + size) - 1);
endpa = i386_round_page(bpa + size);
#ifdef DIAGNOSTIC
if (endpa <= pa)
@ -1840,7 +1840,7 @@ bus_space_unmap(t, bsh, size)
case I386_BUS_SPACE_MEM:
ex = iomem_ex;
va = i386_trunc_page(bsh);
endva = i386_round_page((bsh + size) - 1);
endva = i386_round_page(bsh + size);
#ifdef DIAGNOSTIC
if (endva <= va)