[src/netbsd-3]: src/sys/arch/xen/xen Pull up revision 1.13 (requested by bouy...

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

details:   https://anonhg.NetBSD.org/src/rev/89e4e9a26be1
branches:  netbsd-3
changeset: 576342:89e4e9a26be1
user:      tron <tron%NetBSD.org@localhost>
date:      Wed Jun 29 12:23:27 2005 +0000

description:
Pull up revision 1.13 (requested by bouyer in ticket #510):
Use the time provided by the hypervisor instead of our global time variable
for xen_microtime(). This match more closely what is done on a real i386
(where we read the RTC), and seems to fix gettimeofday() sometime going
backward by several seconds for me.

diffstat:

 sys/arch/xen/xen/clock.c |  10 ++++++----
 1 files changed, 6 insertions(+), 4 deletions(-)

diffs (31 lines):

diff -r 06ddb1fa5da8 -r 89e4e9a26be1 sys/arch/xen/xen/clock.c
--- a/sys/arch/xen/xen/clock.c  Wed Jun 29 12:18:49 2005 +0000
+++ b/sys/arch/xen/xen/clock.c  Wed Jun 29 12:23:27 2005 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: clock.c,v 1.9.2.3 2005/05/28 16:23:36 tron Exp $       */
+/*     $NetBSD: clock.c,v 1.9.2.4 2005/06/29 12:23:27 tron Exp $       */
 
 /*
  *
@@ -34,7 +34,7 @@
 #include "opt_xen.h"
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: clock.c,v 1.9.2.3 2005/05/28 16:23:36 tron Exp $");
+__KERNEL_RCSID(0, "$NetBSD: clock.c,v 1.9.2.4 2005/06/29 12:23:27 tron Exp $");
 
 #include <sys/param.h>
 #include <sys/systm.h>
@@ -224,8 +224,10 @@
 void
 xen_microtime(struct timeval *tv)
 {
-
-       *tv = time;
+       int s = splclock();
+       get_time_values_from_xen();
+       *tv = shadow_tv;
+       splx(s);
 }
 
 void