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path: root/drivers/xen/manage.c
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Diffstat (limited to 'drivers/xen/manage.c')
-rw-r--r--drivers/xen/manage.c46
1 files changed, 42 insertions, 4 deletions
diff --git a/drivers/xen/manage.c b/drivers/xen/manage.c
index 07e857b0de13..1799bd890315 100644
--- a/drivers/xen/manage.c
+++ b/drivers/xen/manage.c
@@ -9,6 +9,7 @@
#include <linux/stop_machine.h>
#include <linux/freezer.h>
+#include <xen/xen.h>
#include <xen/xenbus.h>
#include <xen/grant_table.h>
#include <xen/events.h>
@@ -17,6 +18,7 @@
#include <asm/xen/hypercall.h>
#include <asm/xen/page.h>
+#include <asm/xen/hypervisor.h>
enum shutdown_state {
SHUTDOWN_INVALID = -1,
@@ -33,10 +35,30 @@ enum shutdown_state {
static enum shutdown_state shutting_down = SHUTDOWN_INVALID;
#ifdef CONFIG_PM_SLEEP
-static int xen_suspend(void *data)
+static int xen_hvm_suspend(void *data)
{
+ struct sched_shutdown r = { .reason = SHUTDOWN_suspend };
int *cancelled = data;
+
+ BUG_ON(!irqs_disabled());
+
+ *cancelled = HYPERVISOR_sched_op(SCHEDOP_shutdown, &r);
+
+ xen_hvm_post_suspend(*cancelled);
+ gnttab_resume();
+
+ if (!*cancelled) {
+ xen_irq_resume();
+ xen_timer_resume();
+ }
+
+ return 0;
+}
+
+static int xen_suspend(void *data)
+{
int err;
+ int *cancelled = data;
BUG_ON(!irqs_disabled());
@@ -106,7 +128,10 @@ static void do_suspend(void)
goto out_resume;
}
- err = stop_machine(xen_suspend, &cancelled, cpumask_of(0));
+ if (xen_hvm_domain())
+ err = stop_machine(xen_hvm_suspend, &cancelled, cpumask_of(0));
+ else
+ err = stop_machine(xen_suspend, &cancelled, cpumask_of(0));
dpm_resume_noirq(PMSG_RESUME);
@@ -255,7 +280,19 @@ static int shutdown_event(struct notifier_block *notifier,
return NOTIFY_DONE;
}
-static int __init setup_shutdown_event(void)
+static int __init __setup_shutdown_event(void)
+{
+ /* Delay initialization in the PV on HVM case */
+ if (xen_hvm_domain())
+ return 0;
+
+ if (!xen_pv_domain())
+ return -ENODEV;
+
+ return xen_setup_shutdown_event();
+}
+
+int xen_setup_shutdown_event(void)
{
static struct notifier_block xenstore_notifier = {
.notifier_call = shutdown_event
@@ -264,5 +301,6 @@ static int __init setup_shutdown_event(void)
return 0;
}
+EXPORT_SYMBOL_GPL(xen_setup_shutdown_event);
-subsys_initcall(setup_shutdown_event);
+subsys_initcall(__setup_shutdown_event);