[src/trunk]: src/sys/arch/xen/x86 add a missing splvm()/splx() to protect the...

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

details:   https://anonhg.NetBSD.org/src/rev/1360ba9003c7
branches:  trunk
changeset: 772884:1360ba9003c7
user:      bouyer <bouyer%NetBSD.org@localhost>
date:      Thu Jan 19 22:04:05 2012 +0000

description:
add a missing splvm()/splx() to protect the xpq queue.

diffstat:

 sys/arch/xen/x86/xen_pmap.c |  6 ++++--
 1 files changed, 4 insertions(+), 2 deletions(-)

diffs (34 lines):

diff -r c4d2cb0961bf -r 1360ba9003c7 sys/arch/xen/x86/xen_pmap.c
--- a/sys/arch/xen/x86/xen_pmap.c       Thu Jan 19 22:00:56 2012 +0000
+++ b/sys/arch/xen/x86/xen_pmap.c       Thu Jan 19 22:04:05 2012 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: xen_pmap.c,v 1.13 2012/01/09 12:58:49 cherry Exp $     */
+/*     $NetBSD: xen_pmap.c,v 1.14 2012/01/19 22:04:05 bouyer Exp $     */
 
 /*
  * Copyright (c) 2007 Manuel Bouyer.
@@ -102,7 +102,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: xen_pmap.c,v 1.13 2012/01/09 12:58:49 cherry Exp $");
+__KERNEL_RCSID(0, "$NetBSD: xen_pmap.c,v 1.14 2012/01/19 22:04:05 bouyer Exp $");
 
 #include "opt_user_ldt.h"
 #include "opt_lockdebug.h"
@@ -619,6 +619,7 @@
        if (__predict_false(xpq_cpu != &x86_curcpu)) { /* Too early to xcall */
                CPU_INFO_ITERATOR cii;
                struct cpu_info *ci;
+               int s = splvm();
                for (CPU_INFO_FOREACH(cii, ci)) {
                        if (ci == NULL) {
                                continue;
@@ -629,6 +630,7 @@
                        }
                }
                pmap_pte_flush();
+               splx(s);
                return;
        }