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Need to use a separate variable for return value of pmap_pte_inset in 

pte_spill.  Make off the high bit of the MFTB().
This commit is contained in:
matt 2001-11-04 22:39:08 +00:00
parent 3ca8d91fc8
commit 8a49af3cec
1 changed files with 7 additions and 7 deletions
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14
sys/arch/powerpc/mpc6xx/pmap.c
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@ -1,4 +1,4 @@
/* $NetBSD: pmap.c,v 1.29 2001/11/04 21:15:03 matt Exp $ */ /* $NetBSD: pmap.c,v 1.30 2001/11/04 22:39:08 matt Exp $ */
/*- /*-
* Copyright (c) 2001 The NetBSD Foundation, Inc. * Copyright (c) 2001 The NetBSD Foundation, Inc.
* All rights reserved. * All rights reserved.
@ -629,7 +629,7 @@ pmap_pte_spill(vaddr_t addr)
{ {
struct pvo_entry *source_pvo, *victim_pvo; struct pvo_entry *source_pvo, *victim_pvo;
struct pvo_entry *pvo; struct pvo_entry *pvo;
int ptegidx, i; int ptegidx, i, j;
sr_t sr; sr_t sr;
volatile pteg_t *pteg; volatile pteg_t *pteg;
volatile pte_t *pt; volatile pte_t *pt;
@ -645,8 +645,8 @@ pmap_pte_spill(vaddr_t addr)
* Use low bits of timebase as random generator * Use low bits of timebase as random generator
*/ */
pteg = &pmap_pteg_table[ptegidx]; pteg = &pmap_pteg_table[ptegidx];
i = MFTB(); i = MFTB() & 7;
pt = &pteg->pt[i & 7]; pt = &pteg->pt[i];
source_pvo = NULL; source_pvo = NULL;
victim_pvo = NULL; victim_pvo = NULL;
@ -661,9 +661,9 @@ pmap_pte_spill(vaddr_t addr)
* Now found an entry to be spilled into the pteg. * Now found an entry to be spilled into the pteg.
* The PTE is now be valid, so we know it's active; * The PTE is now be valid, so we know it's active;
*/ */
i = pmap_pte_insert(ptegidx, &pvo->pvo_pte); j = pmap_pte_insert(ptegidx, &pvo->pvo_pte);
if (i >= 0) { if (j >= 0) {
PVO_PTEGIDX_SET(pvo, i); PVO_PTEGIDX_SET(pvo, j);
pmap_pte_overflow--; pmap_pte_overflow--;
PMAP_PVO_CHECK(pvo); /* sanity check */ PMAP_PVO_CHECK(pvo); /* sanity check */
return 1; return 1;