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Implement and enable TOPDOWN_VM. From Chuck Silvers.

This commit is contained in:
martin 2014-04-14 10:54:08 +00:00
parent dd3e806542
commit 9c098a4b96
2 changed files with 24 additions and 3 deletions
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23
sys/arch/sparc64/include/pmap.h
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@ -1,4 +1,4 @@
/* $NetBSD: pmap.h,v 1.57 2013/12/27 21:11:19 palle Exp $ */
/* $NetBSD: pmap.h,v 1.58 2014/04/14 10:54:08 martin Exp $ */
/*-
* Copyright (C) 1995, 1996 Wolfgang Solfrank.
@ -192,8 +192,27 @@ int pmap_count_wired(struct pmap *);
void pmap_activate_pmap(struct pmap *);
void pmap_update(struct pmap *);
void pmap_bootstrap(u_long, u_long);
/* make sure all page mappings are modulo 16K to prevent d$ aliasing */
#define PMAP_PREFER(pa, va, sz, td) (*(va)+=(((*(va))^(pa))&(1<<(PGSHIFT))))
#define PMAP_PREFER(fo, va, sz, td) pmap_prefer((fo), (va), (td))
static inline void
pmap_prefer(vaddr_t fo, vaddr_t *va, int td)
{
vaddr_t newva;
vaddr_t m;
m = 2 * PAGE_SIZE;
newva = (*va & ~(m - 1)) | (fo & (m - 1));
if (td) {
if (newva > *va)
newva -= m;
} else {
if (newva < *va)
newva += m;
}
*va = newva;
}
#define PMAP_GROWKERNEL /* turn on pmap_growkernel interface */
#define PMAP_NEED_PROCWR

4
sys/arch/sparc64/include/vmparam.h
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@ -1,4 +1,4 @@
/* $NetBSD: vmparam.h,v 1.33 2013/01/03 09:40:55 martin Exp $ */
/* $NetBSD: vmparam.h,v 1.34 2014/04/14 10:54:08 martin Exp $ */
/*
* Copyright (c) 1992, 1993
@ -47,6 +47,8 @@
#ifndef VMPARAM_H
#define VMPARAM_H
#define __USE_TOPDOWN_VM
/*
* We use 8K VM pages on the Sun4U. Override the PAGE_* definitions
* to be compile-time constants.