Author: nwhitehorn
Date: Mon Nov 22 17:01:40 2010
New Revision: 215689
URL: http://svn.freebsd.org/changeset/base/215689
Log:
MFC r214610:
Map userland copyin/copyout segment no-execute while it is mapped into the
kernel.
Modified:
stable/8/sys/powerpc/aim/copyinout.c
Directory Properties:
stable/8/sys/ (props changed)
stable/8/sys/amd64/include/xen/ (props changed)
stable/8/sys/cddl/contrib/opensolaris/ (props changed)
stable/8/sys/contrib/dev/acpica/ (props changed)
stable/8/sys/contrib/pf/ (props changed)
stable/8/sys/dev/xen/xenpci/ (props changed)
Modified: stable/8/sys/powerpc/aim/copyinout.c
==============================================================================
--- stable/8/sys/powerpc/aim/copyinout.c Mon Nov 22 16:58:07 2010
(r215688)
+++ stable/8/sys/powerpc/aim/copyinout.c Mon Nov 22 17:01:40 2010
(r215689)
@@ -76,6 +76,9 @@ static __inline void
set_user_sr(register_t vsid)
{
+ /* Mark segment no-execute */
+ vsid |= SR_N;
+
isync();
__asm __volatile ("mtsr %0,%1" :: "n"(USER_SR), "r"(vsid));
isync();
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