[src/trunk]: src/sys/arch/amd64/amd64 Don't protect the second page, since it...

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

details:   https://anonhg.NetBSD.org/src/rev/deb9503a5134
branches:  trunk
changeset: 347486:deb9503a5134
user:      maxv <maxv%NetBSD.org@localhost>
date:      Sat Aug 27 16:17:16 2016 +0000

description:
Don't protect the second page, since it is not part of the IDT.

diffstat:

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

diffs (27 lines):

diff -r b59affe2fbe5 -r deb9503a5134 sys/arch/amd64/amd64/machdep.c
--- a/sys/arch/amd64/amd64/machdep.c    Sat Aug 27 16:07:26 2016 +0000
+++ b/sys/arch/amd64/amd64/machdep.c    Sat Aug 27 16:17:16 2016 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: machdep.c,v 1.229 2016/08/27 16:07:26 maxv Exp $       */
+/*     $NetBSD: machdep.c,v 1.230 2016/08/27 16:17:16 maxv Exp $       */
 
 /*-
  * Copyright (c) 1996, 1997, 1998, 2000, 2006, 2007, 2008, 2011
@@ -111,7 +111,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: machdep.c,v 1.229 2016/08/27 16:07:26 maxv Exp $");
+__KERNEL_RCSID(0, "$NetBSD: machdep.c,v 1.230 2016/08/27 16:17:16 maxv Exp $");
 
 /* #define XENDEBUG_LOW  */
 
@@ -1828,8 +1828,6 @@
         */
        kpreempt_disable();
        pmap_changeprot_local(idt_vaddr, VM_PROT_READ|VM_PROT_WRITE);           
-       pmap_changeprot_local(idt_vaddr + PAGE_SIZE,
-           VM_PROT_READ|VM_PROT_WRITE);
        memset((void *)idt, 0, NIDT * sizeof(idt[0]));
        kpreempt_enable();
        breakpoint();