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Use the same hack as pmap_zero_page() and pmap_copy_page() to provide 

direct-mapped pool pages.
This commit is contained in:
thorpej 1999-04-16 21:45:19 +00:00
parent 3b29e1e158
commit 4b603c180a
1 changed files with 11 additions and 1 deletions
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12
sys/arch/powerpc/include/pmap.h
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@ -1,4 +1,4 @@
/* $NetBSD: pmap.h,v 1.11 1999/03/05 06:10:48 tsubai Exp $ */ /* $NetBSD: pmap.h,v 1.12 1999/04/16 21:45:19 thorpej Exp $ */
/*- /*-
* Copyright (C) 1995, 1996 Wolfgang Solfrank. * Copyright (C) 1995, 1996 Wolfgang Solfrank.
@ -81,6 +81,16 @@ int ptebits __P((paddr_t, int));
#define PMAP_NEED_PROCWR #define PMAP_NEED_PROCWR
void pmap_procwr __P((struct proc *, vaddr_t, size_t)); void pmap_procwr __P((struct proc *, vaddr_t, size_t));
/*
* Alternate mapping hooks for pool pages. Avoids thrashing the TLB.
*
* Note: This won't work if we have more memory than can be direct-mapped
* VA==PA all at once. But pmap_copy_page() and pmap_zero_page() will have
* this problem, too.
*/
#define PMAP_MAP_POOLPAGE(pa) (pa)
#define PMAP_UNMAP_POOLPAGE(pa) (pa)
static __inline paddr_t static __inline paddr_t
vtophys(va) vtophys(va)
vaddr_t va; vaddr_t va;