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Provide PMAP_{,UN}MAP_POOLPAGE().

This commit is contained in:
thorpej 1998-07-24 22:03:33 +00:00
parent b916de0f86
commit 260b2a20f2
1 changed files with 9 additions and 1 deletions
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10
sys/arch/mips/include/pmap.h
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@ -1,4 +1,4 @@
/* $NetBSD: pmap.h,v 1.17 1998/02/25 23:26:41 thorpej Exp $ */
/* $NetBSD: pmap.h,v 1.18 1998/07/24 22:03:33 thorpej Exp $ */
/*
* Copyright (c) 1987 Carnegie-Mellon University
@ -42,6 +42,8 @@
#ifndef _PMAP_MACHINE_
#define _PMAP_MACHINE_
#include <mips/cpuregs.h> /* for KSEG0 below */
/*
* The user address space is 2Gb (0x0 - 0x80000000).
* User programs are laid out in memory as follows:
@ -134,6 +136,12 @@ void pmap_prefer __P((vm_offset_t, vm_offset_t *));
#define PMAP_STEAL_MEMORY /* enable pmap_steal_memory() */
/*
* Alternate mapping hooks for pool pages. Avoids thrashing the TLB.
*/
#define PMAP_MAP_POOLPAGE(pa) MIPS_PHYS_TO_KSEG0((pa))
#define PMAP_UNMAP_POOLPAGE(pa) MIPS_KSEG0_TO_PHYS((va))
/*
* Kernel cache operations for the user-space API
*/