1 files changed, 15 insertions, 1 deletions

diff --git a/include/xen/acpi.h b/include/xen/acpi.h
index 68d73d09b770..46aa3d1c1654 100644
--- a/include/xen/acpi.h
+++ b/include/xen/acpi.h
@@ -78,11 +78,25 @@ static inline int xen_acpi_get_pxm(acpi_handle h)
 int xen_acpi_notify_hypervisor_state(u8 sleep_state,
                                      u32 pm1a_cnt, u32 pm1b_cnd);
 
+static inline int xen_acpi_suspend_lowlevel(void)
+{
+        /*
+        * Xen will save and restore CPU context, so
+        * we can skip that and just go straight to
+        * the suspend.
+        */
+        acpi_enter_sleep_state(ACPI_STATE_S3);
+        return 0;
+}
+
 static inline void xen_acpi_sleep_register(void)
 {
-        if (xen_initial_domain())
+        if (xen_initial_domain()) {
                 acpi_os_set_prepare_sleep(
                         &xen_acpi_notify_hypervisor_state);
+
+                acpi_suspend_lowlevel = xen_acpi_suspend_lowlevel;
+        }
 }
 #else
 static inline void xen_acpi_sleep_register(void)