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Teach mips pmap_prefer() to deal with topdown. 

Tested by simonb.
This commit is contained in:
atatat 2005-01-17 04:54:14 +00:00
parent a076957818
commit 17b1390278
2 changed files with 9 additions and 6 deletions
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6
sys/arch/mips/include/pmap.h
View File

@ -1,4 +1,4 @@
/* $NetBSD: pmap.h,v 1.45 2005/01/17 04:37:20 atatat Exp $ */
/* $NetBSD: pmap.h,v 1.46 2005/01/17 04:54:14 atatat Exp $ */
/*
* Copyright (c) 1992, 1993
@ -171,8 +171,8 @@ void pmap_procwr(struct proc *, vaddr_t, size_t);
* the virtually-indexed cache on mips3 CPUs.
*/
#ifdef MIPS3_PLUS
#define PMAP_PREFER(pa, va, sz, td) pmap_prefer((pa), (va))
void pmap_prefer(vaddr_t, vaddr_t *);
#define PMAP_PREFER(pa, va, sz, td) pmap_prefer((pa), (va), (td))
void pmap_prefer(vaddr_t, vaddr_t *, int);
#endif /* MIPS3_PLUS */
#define PMAP_STEAL_MEMORY /* enable pmap_steal_memory() */

9
sys/arch/mips/mips/pmap.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: pmap.c,v 1.155 2003/12/30 12:33:16 pk Exp $ */
/* $NetBSD: pmap.c,v 1.156 2005/01/17 04:54:14 atatat Exp $ */
/*-
* Copyright (c) 1998, 2001 The NetBSD Foundation, Inc.
@ -74,7 +74,7 @@
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: pmap.c,v 1.155 2003/12/30 12:33:16 pk Exp $");
__KERNEL_RCSID(0, "$NetBSD: pmap.c,v 1.156 2005/01/17 04:54:14 atatat Exp $");
/*
* Manages physical address maps.
@ -2139,9 +2139,10 @@ pmap_pte(pmap, va)
* a cache alias conflict.
*/
void
pmap_prefer(foff, vap)
pmap_prefer(foff, vap, td)
vaddr_t foff;
vaddr_t *vap;
int td;
{
vaddr_t va;
vsize_t d;
@ -2151,6 +2152,8 @@ pmap_prefer(foff, vap)
d = foff - va;
d &= mips_cache_prefer_mask;
if (td && d)
d = -((-d) & mips_cache_prefer_mask);
*vap = va + d;
}
}