Aren
/
NetBSD
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

mm_init: re-enable zero page protection.

This commit is contained in:
rmind 2012-02-21 21:57:06 +00:00
parent 9ff44d86de
commit e8e364e79f
1 changed files with 2 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
sys/dev/mm.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: mm.c,v 1.15 2011/06/16 16:20:28 joerg Exp $ */
/* $NetBSD: mm.c,v 1.16 2012/02/21 21:57:06 rmind Exp $ */
/*-
* Copyright (c) 2002, 2008, 2010 The NetBSD Foundation, Inc.
@ -34,7 +34,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: mm.c,v 1.15 2011/06/16 16:20:28 joerg Exp $");
__KERNEL_RCSID(0, "$NetBSD: mm.c,v 1.16 2012/02/21 21:57:06 rmind Exp $");
#include "opt_compat_netbsd.h"
@ -89,9 +89,7 @@ mm_init(void)
/* Read-only zero-page. */
pg = uvm_km_alloc(kernel_map, PAGE_SIZE, 0, UVM_KMF_WIRED|UVM_KMF_ZERO);
KASSERT(pg != 0);
#if 0
pmap_protect(pmap_kernel(), pg, pg + PAGE_SIZE, VM_PROT_READ);
#endif
pmap_update(pmap_kernel());
dev_zero_page = (void *)pg;