[Xen-devel] [PATCH v4 7/7] mach-virt: support Xen hypercalls for shutdown and reboot

[Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>]

Signed-off-by: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>
CC: Marc Zyngier <marc.zyngier@xxxxxxx>
CC: will.deacon@xxxxxxx
CC: arnd@xxxxxxxx
CC: rob.herring@xxxxxxxxxxx
---
 arch/arm/mach-virt/virt.c |   32 ++++++++++++++++++++++++++++++++
 1 files changed, 32 insertions(+), 0 deletions(-)

diff --git a/arch/arm/mach-virt/virt.c b/arch/arm/mach-virt/virt.c
index 528c05e..ba14321 100644
--- a/arch/arm/mach-virt/virt.c
+++ b/arch/arm/mach-virt/virt.c
@@ -23,13 +23,44 @@
 #include <linux/of_platform.h>
 #include <linux/smp.h>
 
+#include <xen/xen.h>
+#include <xen/interface/sched.h>
+
 #include <asm/arch_timer.h>
 #include <asm/mach/arch.h>
 #include <asm/mach/time.h>
+#include <asm/xen/hypercall.h>
+
+static void virt_restart(char str, const char *cmd)
+{
+#ifdef CONFIG_XEN
+       if (xen_domain()) {
+               struct sched_shutdown r = { .reason = SHUTDOWN_reboot };
+               int rc;
+               rc = HYPERVISOR_sched_op(SCHEDOP_shutdown, &r);
+               if (rc)
+                       BUG();
+       }
+#endif
+}
+
+static void virt_power_off(void)
+{
+#ifdef CONFIG_XEN
+       if (xen_domain()) {
+               struct sched_shutdown r = { .reason = SHUTDOWN_poweroff };
+               int rc;
+               rc = HYPERVISOR_sched_op(SCHEDOP_shutdown, &r);
+               if (rc)
+                       BUG();
+       }
+#endif
+}
 
 static void __init virt_init(void)
 {
        of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
+       pm_power_off = virt_power_off;
 }
 
 static void __init virt_timer_init(void)
@@ -52,4 +83,5 @@ DT_MACHINE_START(VIRT, "Dummy Virtual Machine")
        .init_machine   = virt_init,
        .smp            = smp_ops(virt_smp_ops),
        .dt_compat      = virt_dt_match,
+       .restart        = virt_restart,
 MACHINE_END
-- 
1.7.2.5


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