aboutsummaryrefslogtreecommitdiffstats
path: root/unmodified_drivers/linux-2.6/platform-pci/panic-handler.c
diff options
context:
space:
mode:
Diffstat (limited to 'unmodified_drivers/linux-2.6/platform-pci/panic-handler.c')
-rw-r--r--unmodified_drivers/linux-2.6/platform-pci/panic-handler.c54
1 files changed, 54 insertions, 0 deletions
diff --git a/unmodified_drivers/linux-2.6/platform-pci/panic-handler.c b/unmodified_drivers/linux-2.6/platform-pci/panic-handler.c
new file mode 100644
index 0000000000..91bc03549b
--- /dev/null
+++ b/unmodified_drivers/linux-2.6/platform-pci/panic-handler.c
@@ -0,0 +1,54 @@
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/notifier.h>
+#include <asm/hypervisor.h>
+
+MODULE_LICENSE("GPL");
+
+#ifdef __ia64__
+static void
+xen_panic_hypercall(struct unw_frame_info *info, void *arg)
+{
+ current->thread.ksp = (__u64)info->sw - 16;
+ HYPERVISOR_shutdown(SHUTDOWN_crash);
+ /* we're never actually going to get here... */
+}
+#endif
+
+static int
+xen_panic_event(struct notifier_block *this, unsigned long event, void *ptr)
+{
+#ifdef __ia64__
+ unw_init_running(xen_panic_hypercall, NULL);
+#else /* !__ia64__ */
+ HYPERVISOR_shutdown(SHUTDOWN_crash);
+#endif
+ /* we're never actually going to get here... */
+ return NOTIFY_DONE;
+}
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,18)
+static struct notifier_block xen_panic_block = {
+ xen_panic_event, NULL, 0 /* try to go last */
+};
+#else
+static struct notifier_block xen_panic_block = {
+ .notifier_call= xen_panic_event,
+ .next= NULL,
+ .priority= 0/* try to go last */
+};
+#endif /*LINUX_VERSION_CODE < KERNEL_VERSION(2,6,18)*/
+
+static int __init setup_panic_event(void)
+{
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,18)
+ notifier_chain_register(&panic_notifier_list, &xen_panic_block);
+#else
+ atomic_notifier_chain_register(&panic_notifier_list, &xen_panic_block);
+#endif /*LINUX_VERSION_CODE < KERNEL_VERSION(2,6,18)*/
+ return 0;
+}
+
+int xen_panic_handler_init(void)
+{
+ return setup_panic_event();
+}