xen/arm: use sched_op hypercalls for machine reboot and power off
Changes in v5:
- set pm_power_off and arm_pm_restart from the Xen specific
intialization code.
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
diff --git a/arch/arm/xen/enlighten.c b/arch/arm/xen/enlighten.c
index 6c87d11..9a0a917 100644
--- a/arch/arm/xen/enlighten.c
+++ b/arch/arm/xen/enlighten.c
@@ -10,9 +10,12 @@
#include <xen/platform_pci.h>
#include <xen/xenbus.h>
#include <xen/page.h>
+#include <xen/xen.h>
+#include <xen/interface/sched.h>
#include <xen/xen-ops.h>
#include <asm/xen/hypervisor.h>
#include <asm/xen/hypercall.h>
+#include <asm/system_misc.h>
#include <linux/interrupt.h>
#include <linux/irqreturn.h>
#include <linux/module.h>
@@ -173,6 +176,24 @@
return 0;
}
+static void xen_restart(char str, const char *cmd)
+{
+ struct sched_shutdown r = { .reason = SHUTDOWN_reboot };
+ int rc;
+ rc = HYPERVISOR_sched_op(SCHEDOP_shutdown, &r);
+ if (rc)
+ BUG();
+}
+
+static void xen_power_off(void)
+{
+ struct sched_shutdown r = { .reason = SHUTDOWN_poweroff };
+ int rc;
+ rc = HYPERVISOR_sched_op(SCHEDOP_shutdown, &r);
+ if (rc)
+ BUG();
+}
+
/*
* see Documentation/devicetree/bindings/arm/xen.txt for the
* documentation of the Xen Device Tree format.
@@ -252,6 +273,9 @@
if (!xen_initial_domain())
xenbus_probe(NULL);
+ pm_power_off = xen_power_off;
+ arm_pm_restart = xen_restart;
+
return 0;
}
core_initcall(xen_guest_init);