[LINUX] Call ctrl_alt_del() to trigger a reboot so we benefit from the

generic infrastructure for cad_pid etc.

Add a ctrl_alt_del() implemenation to the PV on HVM compatibility
layer since ctrl_alt_del() is not exported on native kernels.

Signed-off-by: Ian Campbell <ian.campbell@xensource.com>

linux-2.6-xen-sparse/drivers/xen/core/reboot.c

@@ -100,6 +100,7 @@ static void __shutdown_handler(void *unused)
 static void shutdown_handler(struct xenbus_watch *watch,
 			     const char **vec, unsigned int len)
 {
+	extern void ctrl_alt_del(void);
 	char *str;
 	struct xenbus_transaction xbt;
 	int err;
@@ -129,7 +130,7 @@ static void shutdown_handler(struct xenbus_watch *watch,
 	if (strcmp(str, "poweroff") == 0)
 		shutting_down = SHUTDOWN_POWEROFF;
 	else if (strcmp(str, "reboot") == 0)
-		kill_proc(1, SIGINT, 1); /* interrupt init */
+		ctrl_alt_del();
 	else if (strcmp(str, "suspend") == 0)
 		shutting_down = SHUTDOWN_SUSPEND;
 	else if (strcmp(str, "halt") == 0)

unmodified_drivers/linux-2.6/platform-pci/platform-compat.c

@@ -13,6 +13,12 @@ static int system_state = 1;
 EXPORT_SYMBOL(system_state);
 #endif
 
+static inline void ctrl_alt_del(void)
+{
+	kill_proc(1, SIGINT, 1); /* interrupt init */
+}
+EXPORT_SYMBOL(ctrl_alt_del);
+
 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,8)
 size_t strcspn(const char *s, const char *reject)
 {