[PATCH] s390: kexec fixes and improvements.
Disable pseudo page fault handling before starting the new kernel and try
to use diag308 to reset the machine.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/arch/s390/kernel/traps.c b/arch/s390/kernel/traps.c
index bc7b7be..6b8703e 100644
--- a/arch/s390/kernel/traps.c
+++ b/arch/s390/kernel/traps.c
@@ -29,6 +29,7 @@
#include <linux/delay.h>
#include <linux/module.h>
#include <linux/kallsyms.h>
+#include <linux/reboot.h>
#include <asm/system.h>
#include <asm/uaccess.h>
@@ -675,6 +676,19 @@
panic("Corrupt kernel stack, can't continue.");
}
+#ifndef CONFIG_ARCH_S390X
+static int
+pagex_reboot_event(struct notifier_block *this, unsigned long event, void *ptr)
+{
+ if (MACHINE_IS_VM)
+ cpcmd("SET PAGEX OFF", NULL, 0, NULL);
+ return NOTIFY_DONE;
+}
+
+static struct notifier_block pagex_reboot_notifier = {
+ .notifier_call = &pagex_reboot_event,
+};
+#endif
/* init is done in lowcore.S and head.S */
@@ -735,6 +749,7 @@
&ext_int_pfault);
#endif
#ifndef CONFIG_ARCH_S390X
+ register_reboot_notifier(&pagex_reboot_notifier);
cpcmd("SET PAGEX ON", NULL, 0, NULL);
#endif
}