diff options
Diffstat (limited to 'arch/s390/kernel/machine_kexec.c')
| -rw-r--r-- | arch/s390/kernel/machine_kexec.c | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/arch/s390/kernel/machine_kexec.c b/arch/s390/kernel/machine_kexec.c index 51e8c63705a9..e94421678b13 100644 --- a/arch/s390/kernel/machine_kexec.c +++ b/arch/s390/kernel/machine_kexec.c @@ -105,7 +105,7 @@ static void __do_machine_kdump(void *image) static noinline void __machine_kdump(void *image) { struct mcesa *mcesa; - unsigned long cr2_old, cr2_new; + union ctlreg2 cr2_old, cr2_new; int this_cpu, cpu; lgr_info_log(); @@ -122,11 +122,12 @@ static noinline void __machine_kdump(void *image) if (MACHINE_HAS_VX) save_vx_regs((__vector128 *) mcesa->vector_save_area); if (MACHINE_HAS_GS) { - __ctl_store(cr2_old, 2, 2); - cr2_new = cr2_old | (1UL << 4); - __ctl_load(cr2_new, 2, 2); + __ctl_store(cr2_old.val, 2, 2); + cr2_new = cr2_old; + cr2_new.gse = 1; + __ctl_load(cr2_new.val, 2, 2); save_gs_cb((struct gs_cb *) mcesa->guarded_storage_save_area); - __ctl_load(cr2_old, 2, 2); + __ctl_load(cr2_old.val, 2, 2); } /* * To create a good backchain for this CPU in the dump store_status |