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In kern/12554 workaround in pmap_page_remove, don't forget to unmap 

(and unlock) the other pmap's pte's before continuing to the next
pmap.  Avoids pmap lock leaks (generates LOCKDEBUG warning, deadlocks
MULTIPROCESSOR).
This commit is contained in:
sommerfeld 2001-05-23 04:25:35 +00:00
parent 735202e79f
commit 8676150cb7
1 changed files with 2 additions and 1 deletions
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3
sys/arch/i386/i386/pmap.c
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@ -1,4 +1,4 @@
/* $NetBSD: pmap.c,v 1.123 2001/04/29 04:42:04 thorpej Exp $ */ /* $NetBSD: pmap.c,v 1.124 2001/05/23 04:25:35 sommerfeld Exp $ */
/* /*
* *
@ -2352,6 +2352,7 @@ pmap_page_remove(pg)
VM_PAGE_TO_PHYS(pg), pg->wire_count); VM_PAGE_TO_PHYS(pg), pg->wire_count);
#endif #endif
prevptr = &pve->pv_next; prevptr = &pve->pv_next;
pmap_unmap_ptes(pve->pv_pmap); /* unlocks pmap */
continue; continue;
} }
#endif /* kern/12554 */ #endif /* kern/12554 */