[src/trunk]: src/sys/arch/xen/x86 Correction to previous.

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

details:   https://anonhg.NetBSD.org/src/rev/063907ac716e
branches:  trunk
changeset: 466958:063907ac716e
user:      ad <ad%NetBSD.org@localhost>
date:      Tue Jan 07 13:48:01 2020 +0000

description:
Correction to previous.

diffstat:

 sys/arch/xen/x86/xen_pmap.c |  8 +++++---
 1 files changed, 5 insertions(+), 3 deletions(-)

diffs (29 lines):

diff -r 927928bf4246 -r 063907ac716e sys/arch/xen/x86/xen_pmap.c
--- a/sys/arch/xen/x86/xen_pmap.c       Tue Jan 07 13:44:23 2020 +0000
+++ b/sys/arch/xen/x86/xen_pmap.c       Tue Jan 07 13:48:01 2020 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: xen_pmap.c,v 1.36 2020/01/07 13:20:18 ad Exp $ */
+/*     $NetBSD: xen_pmap.c,v 1.37 2020/01/07 13:48:01 ad Exp $ */
 
 /*
  * Copyright (c) 2007 Manuel Bouyer.
@@ -101,7 +101,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: xen_pmap.c,v 1.36 2020/01/07 13:20:18 ad Exp $");
+__KERNEL_RCSID(0, "$NetBSD: xen_pmap.c,v 1.37 2020/01/07 13:48:01 ad Exp $");
 
 #include "opt_user_ldt.h"
 #include "opt_lockdebug.h"
@@ -220,7 +220,9 @@
        pmap_map_ptes(pmap, &pmap2, &ptes, &pdes);
        if (!pmap_pdes_valid(va, pdes, &pde, &lvl)) {
                pmap_unmap_ptes(pmap, pmap2);
-               mutex_exit(&pmap->pm_lock);
+               if (pmap != pmap_kernel()) {
+                       mutex_exit(&pmap->pm_lock);
+               }
                return false;
        }