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fix some confusion about PG_FAKE.

This commit is contained in:
chs 2012-08-31 14:31:46 +00:00
parent eb30b37d82
commit 898c59c515
1 changed files with 4 additions and 16 deletions
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20
sys/arch/ia64/ia64/pmap.c
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@ -1,4 +1,4 @@
/* $NetBSD: pmap.c,v 1.27 2010/11/12 07:59:26 uebayasi Exp $ */
/* $NetBSD: pmap.c,v 1.28 2012/08/31 14:31:46 chs Exp $ */
/*-
@ -85,7 +85,7 @@
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: pmap.c,v 1.27 2010/11/12 07:59:26 uebayasi Exp $");
__KERNEL_RCSID(0, "$NetBSD: pmap.c,v 1.28 2012/08/31 14:31:46 chs Exp $");
#include <sys/param.h>
#include <sys/systm.h>
@ -1239,9 +1239,6 @@ pmap_clear_modify(struct vm_page *pg)
pmap_t oldpmap;
pv_entry_t pv;
if (pg->flags & PG_FAKE)
return rv;
TAILQ_FOREACH(pv, &md->pv_list, pv_list) {
PMAP_LOCK(pv->pv_pmap);
oldpmap = pmap_install(pv->pv_pmap);
@ -1448,7 +1445,7 @@ pmap_enter(pmap_t pmap, vaddr_t va, paddr_t pa, vm_prot_t prot, u_int flags)
* Enter on the PV list if part of our managed memory.
*/
if ((flags & (PG_FAKE)) == 0) {
if (pg != NULL) {
pmap_insert_entry(pmap, va, pg);
managed = true;
}
@ -1478,7 +1475,7 @@ validate:
/*
* Routine: pmap_page_purge: => was: pmap_remove_all
* Routine: pmap_page_purge
* Function:
* Removes this physical page from
* all physical maps in which it resides.
@ -1497,15 +1494,6 @@ pmap_page_purge(struct vm_page *pg)
pmap_t oldpmap;
pv_entry_t pv;
#if defined(DIAGNOSTIC)
/*
* XXX this makes pmap_page_protect(NONE) illegal for non-managed
* pages!
*/
if (pg->flags & PG_FAKE) {
panic("pmap_page_protect: illegal for unmanaged page, va: 0x%lx", VM_PAGE_TO_PHYS(pg));
}
#endif
//UVM_LOCK_ASSERT_PAGEQ();
while ((pv = TAILQ_FIRST(&md->pv_list)) != NULL) {