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authorIan Campbell <ian.campbell@citrix.com>2011-02-17 10:31:20 +0000
committerIan Campbell <ian.campbell@citrix.com>2011-02-17 10:31:20 +0000
commit8dd38383a51d0fb6b025dc330aaa3470281da3b2 (patch)
treee1de2f65e13e9383b91697afe283f2e28d3fdeaa
parent100b33c8bd8a3235fd0b7948338d6cbb3db3c63d (diff)
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xen: suspend and resume system devices when running PVHVM
Otherwise we fail to properly suspend/resume all of the emulated devices. Something between 2.6.38-rc2 and rc3 appears to have exposed this issue, but it's always been wrong not to do this. Signed-off-by: Ian Campbell <ian.campbell@citrix.com> Acked-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com> Acked-by: Jeremy Fitzhardinge <jeremy@goop.org>
-rw-r--r--drivers/xen/manage.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/xen/manage.c b/drivers/xen/manage.c
index db8c4c4..2417727 100644
--- a/drivers/xen/manage.c
+++ b/drivers/xen/manage.c
@@ -37,11 +37,19 @@ static enum shutdown_state shutting_down = SHUTDOWN_INVALID;
#ifdef CONFIG_PM_SLEEP
static int xen_hvm_suspend(void *data)
{
+ int err;
struct sched_shutdown r = { .reason = SHUTDOWN_suspend };
int *cancelled = data;
BUG_ON(!irqs_disabled());
+ err = sysdev_suspend(PMSG_SUSPEND);
+ if (err) {
+ printk(KERN_ERR "xen_hvm_suspend: sysdev_suspend failed: %d\n",
+ err);
+ return err;
+ }
+
*cancelled = HYPERVISOR_sched_op(SCHEDOP_shutdown, &r);
xen_hvm_post_suspend(*cancelled);
@@ -53,6 +61,8 @@ static int xen_hvm_suspend(void *data)
xen_timer_resume();
}
+ sysdev_resume();
+
return 0;
}