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Allow gdb to work again.

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This commit is contained in:
John Dyson 1998-01-21 12:18:00 +00:00
parent 217e186518
commit 480ba2f552
1 changed files with 6 additions and 4 deletions
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10
sys/vm/vm_map.c
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@ -61,7 +61,7 @@
* any improvements or extensions that they make and grant Carnegie the
* rights to redistribute these changes.
*
* $Id: vm_map.c,v 1.105 1998/01/12 01:44:31 dyson Exp $
* $Id: vm_map.c,v 1.106 1998/01/17 09:16:51 dyson Exp $
*/
/*
@ -2310,15 +2310,17 @@ RetryLookup:;
* COW for debuggers.
*/
prot = entry->protection;
if (fault_type & VM_PROT_OVERRIDE_WRITE)
prot = entry->max_protection;
else
prot = entry->protection;
fault_type &= (VM_PROT_READ|VM_PROT_WRITE|VM_PROT_EXECUTE);
if ((fault_type & prot) != fault_type) {
RETURN(KERN_PROTECTION_FAILURE);
}
if (entry->wired_count &&
(fault_type & VM_PROT_WRITE) &&
if (entry->wired_count && (fault_type & VM_PROT_WRITE) &&
(entry->eflags & MAP_ENTRY_COW) &&
(fault_typea & VM_PROT_OVERRIDE_WRITE) == 0) {
RETURN(KERN_PROTECTION_FAILURE);