[src/trunk]: src/sys/arch/amd64/amd64 cpu_fsgs_zero: always clear tf_fs and t...

[yamt <yamt%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/8c79e768eaf1
branches:  trunk
changeset: 758141:8c79e768eaf1
user:      yamt <yamt%NetBSD.org@localhost>
date:      Thu Oct 21 11:22:55 2010 +0000

description:
cpu_fsgs_zero: always clear tf_fs and tf_gs.

diffstat:

 sys/arch/amd64/amd64/machdep.c |  6 ++++--
 1 files changed, 4 insertions(+), 2 deletions(-)

diffs (27 lines):

diff -r 62d081381d52 -r 8c79e768eaf1 sys/arch/amd64/amd64/machdep.c
--- a/sys/arch/amd64/amd64/machdep.c    Thu Oct 21 11:17:54 2010 +0000
+++ b/sys/arch/amd64/amd64/machdep.c    Thu Oct 21 11:22:55 2010 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: machdep.c,v 1.150 2010/10/21 11:17:55 yamt Exp $       */
+/*     $NetBSD: machdep.c,v 1.151 2010/10/21 11:22:55 yamt Exp $       */
 
 /*-
  * Copyright (c) 1996, 1997, 1998, 2000, 2006, 2007, 2008
@@ -107,7 +107,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: machdep.c,v 1.150 2010/10/21 11:17:55 yamt Exp $");
+__KERNEL_RCSID(0, "$NetBSD: machdep.c,v 1.151 2010/10/21 11:22:55 yamt Exp $");
 
 /* #define XENDEBUG_LOW  */
 
@@ -1863,6 +1863,8 @@
                update_descriptor(&curcpu()->ci_gdt[GUGS_SEL], &zero);
                kpreempt_enable();
        } else {
+               tf->tf_fs = 0;
+               tf->tf_gs = 0;
                pcb->pcb_fs = 0;
                pcb->pcb_gs = 0;
        }