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Fix pte_clear to TLB flush the va, not the tlb adress (which is only valid 

for clearing the ref bit).  pvo_to_pte (if !diagnostic) will return NULL
immediately if PTE_VALID is not set.
This commit is contained in:
matt 2001-11-11 23:07:02 +00:00
parent 79ca4cf1a1
commit ab93af26ea
1 changed files with 11 additions and 5 deletions
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16
sys/arch/powerpc/mpc6xx/pmap.c
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@ -1,4 +1,4 @@
/* $NetBSD: pmap.c,v 1.34 2001/11/06 06:25:28 matt Exp $ */
/* $NetBSD: pmap.c,v 1.35 2001/11/11 23:07:02 matt Exp $ */
/*-
* Copyright (c) 2001 The NetBSD Foundation, Inc.
* All rights reserved.
@ -506,13 +506,13 @@ pmap_pte_synch(volatile pte_t *pt, pte_t *pvo_pt)
}
static __inline void
pmap_pte_clear(volatile pte_t *pt, int ptebit)
pmap_pte_clear(volatile pte_t *pt, vaddr_t va, int ptebit)
{
/*
* As shown in Section 7.6.3.2.2
* As shown in Section 7.6.3.2.3
*/
pt->pte_lo &= ~ptebit;
TLBIE(pt);
TLBIE(va);
EIEIO();
TLBSYNC();
SYNC();
@ -1042,6 +1042,11 @@ pmap_pvo_to_pte(const struct pvo_entry *pvo, int pteidx)
{
volatile pte_t *pt;
#ifndef DIAGNOSTIC
if ((pvo->pvo_pte.hi & PTE_VALID) == 0)
return NULL;
#endif
/*
* If we haven't been supplied the ptegidx, calculate it.
*/
@ -2049,7 +2054,8 @@ pmap_clear_bit(struct vm_page *pg, int ptebit)
pt = pmap_pvo_to_pte(pvo, -1);
if (pt != NULL) {
pmap_pte_synch(pt, &pvo->pvo_pte);
pmap_pte_clear(pt, ptebit);
if (pvo->pvo_pte.pte_lo & ptebit)
pmap_pte_clear(pt, PVO_VADDR(pvo), ptebit);
}
rv |= pvo->pvo_pte.pte_lo;
pvo->pvo_pte.pte_lo &= ~ptebit;