[S390] kdump backend code
This patch provides the architecture specific part of the s390 kdump
support.
Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
diff --git a/arch/s390/kernel/ipl.c b/arch/s390/kernel/ipl.c
index 90769b4..ca0520c 100644
--- a/arch/s390/kernel/ipl.c
+++ b/arch/s390/kernel/ipl.c
@@ -16,6 +16,7 @@
#include <linux/ctype.h>
#include <linux/fs.h>
#include <linux/gfp.h>
+#include <linux/crash_dump.h>
#include <asm/ipl.h>
#include <asm/smp.h>
#include <asm/setup.h>
@@ -1740,6 +1741,9 @@
{
smp_restart_with_online_cpu();
smp_send_stop();
+#ifdef CONFIG_CRASH_DUMP
+ crash_kexec(NULL);
+#endif
on_restart_trigger.action->fn(&on_restart_trigger);
stop_run(&on_restart_trigger);
}
@@ -2010,7 +2014,7 @@
u32 dump_prefix_page;
-void s390_reset_system(void)
+void s390_reset_system(void (*func)(void *), void *data)
{
struct _lowcore *lc;
@@ -2038,6 +2042,10 @@
S390_lowcore.program_new_psw.addr =
PSW_ADDR_AMODE | (unsigned long) s390_base_pgm_handler;
- do_reset_calls();
-}
+ /* Store status at absolute zero */
+ store_status();
+ do_reset_calls();
+ if (func)
+ func(data);
+}