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Patch from John Dyson:

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a pv chain was being traversed while interrupts were
	fully enabled in pmap_remove_all ... this is bogus, and
	has been fixed in pmap.c. (sorry for adding the splimp)
This commit is contained in:
David Greenman 1994-02-10 03:03:44 +00:00
parent d4ef5cfd2e
commit 43ef94a93a
2 changed files with 6 additions and 6 deletions
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6
sys/amd64/amd64/pmap.c
View File

@ -35,7 +35,7 @@
* SUCH DAMAGE.
*
* from: @(#)pmap.c 7.7 (Berkeley) 5/12/91
* $Id: pmap.c,v 1.16 1994/01/31 23:47:27 davidg Exp $
* $Id: pmap.c,v 1.17 1994/02/08 03:07:58 davidg Exp $
*/
/*
@ -990,8 +990,8 @@ pmap_remove_all(pa)
pv = pa_to_pvh(pa);
m = PHYS_TO_VM_PAGE(pa);
s = splimp();
while (pv->pv_pmap != NULL) {
s = splhigh();
pmap = pv->pv_pmap;
ptp = get_pt_entry(pmap);
va = i386_btop(pv->pv_va);
@ -1017,8 +1017,8 @@ pmap_remove_all(pa)
pv->pv_pmap = NULL;
}
splx(s);
}
splx(s);
tlbflush();
}

6
sys/i386/i386/pmap.c
View File

@ -35,7 +35,7 @@
* SUCH DAMAGE.
*
* from: @(#)pmap.c 7.7 (Berkeley) 5/12/91
* $Id: pmap.c,v 1.16 1994/01/31 23:47:27 davidg Exp $
* $Id: pmap.c,v 1.17 1994/02/08 03:07:58 davidg Exp $
*/
/*
@ -990,8 +990,8 @@ pmap_remove_all(pa)
pv = pa_to_pvh(pa);
m = PHYS_TO_VM_PAGE(pa);
s = splimp();
while (pv->pv_pmap != NULL) {
s = splhigh();
pmap = pv->pv_pmap;
ptp = get_pt_entry(pmap);
va = i386_btop(pv->pv_va);
@ -1017,8 +1017,8 @@ pmap_remove_all(pa)
pv->pv_pmap = NULL;
}
splx(s);
}
splx(s);
tlbflush();
}