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-rw-r--r--arch/s390/kernel/ipl.c16
1 files changed, 10 insertions, 6 deletions
diff --git a/arch/s390/kernel/ipl.c b/arch/s390/kernel/ipl.c
index 8342e65a140..2f6cfd460cb 100644
--- a/arch/s390/kernel/ipl.c
+++ b/arch/s390/kernel/ipl.c
@@ -1528,12 +1528,15 @@ static struct shutdown_action __refdata dump_action = {
static void dump_reipl_run(struct shutdown_trigger *trigger)
{
- u32 csum;
-
- csum = csum_partial(reipl_block_actual, reipl_block_actual->hdr.len, 0);
- copy_to_absolute_zero(&S390_lowcore.ipib_checksum, &csum, sizeof(csum));
- copy_to_absolute_zero(&S390_lowcore.ipib, &reipl_block_actual,
- sizeof(reipl_block_actual));
+ struct {
+ void *addr;
+ __u32 csum;
+ } __packed ipib;
+
+ ipib.csum = csum_partial(reipl_block_actual,
+ reipl_block_actual->hdr.len, 0);
+ ipib.addr = reipl_block_actual;
+ memcpy_absolute(&S390_lowcore.ipib, &ipib, sizeof(ipib));
dump_run(trigger);
}
@@ -1750,6 +1753,7 @@ static struct kobj_attribute on_restart_attr =
static void __do_restart(void *ignore)
{
+ __arch_local_irq_stosm(0x04); /* enable DAT */
smp_send_stop();
#ifdef CONFIG_CRASH_DUMP
crash_kexec(NULL);