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on MP systems, whenever we change a PTE, make to sync the data cache so that 

other processors can see the change.
This commit is contained in:
matt 2008-03-11 20:44:01 +00:00
parent 0dddb5735e
commit 9b9164cc52
1 changed files with 11 additions and 2 deletions
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13
sys/arch/powerpc/oea/pmap.c
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@ -1,4 +1,4 @@
/* $NetBSD: pmap.c,v 1.56 2008/02/17 18:16:42 phx Exp $ */
/* $NetBSD: pmap.c,v 1.57 2008/03/11 20:44:01 matt Exp $ */
/*-
* Copyright (c) 2001 The NetBSD Foundation, Inc.
* All rights reserved.
@ -70,13 +70,15 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: pmap.c,v 1.56 2008/02/17 18:16:42 phx Exp $");
__KERNEL_RCSID(0, "$NetBSD: pmap.c,v 1.57 2008/03/11 20:44:01 matt Exp $");
#define PMAP_NOOPNAMES
#include "opt_ppcarch.h"
#include "opt_altivec.h"
#include "opt_multiprocessor.h"
#include "opt_pmap.h"
#include <sys/param.h>
#include <sys/malloc.h>
#include <sys/proc.h>
@ -517,6 +519,7 @@ extern struct evcnt pmap_evcnt_idlezeroed_pages;
#define TLBSYNC() __asm volatile("tlbsync")
#define SYNC() __asm volatile("sync")
#define EIEIO() __asm volatile("eieio")
#define DCBST(va) __asm __volatile("dcbst 0,%0" :: "r"(va))
#define MFMSR() mfmsr()
#define MTMSR(psl) mtmsr(psl)
#define MFPVR() mfpvr()
@ -785,6 +788,9 @@ pmap_pte_clear(volatile struct pte *pt, vaddr_t va, int ptebit)
EIEIO();
TLBSYNC();
SYNC();
#ifdef MULTIPROCESSOR
DCBST(pt);
#endif
}
static inline void
@ -806,6 +812,9 @@ pmap_pte_set(volatile struct pte *pt, struct pte *pvo_pt)
pt->pte_hi = pvo_pt->pte_hi;
TLBSYNC();
SYNC();
#ifdef MULTIPROCESSOR
DCBST(pt);
#endif
pmap_pte_valid++;
}