diff options
Diffstat (limited to 'arch/s390/kernel/machine_kexec.c')
| -rw-r--r-- | arch/s390/kernel/machine_kexec.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/arch/s390/kernel/machine_kexec.c b/arch/s390/kernel/machine_kexec.c index 3074c1d83829..db5658daf994 100644 --- a/arch/s390/kernel/machine_kexec.c +++ b/arch/s390/kernel/machine_kexec.c @@ -27,6 +27,7 @@ #include <asm/cacheflush.h> #include <asm/os_info.h> #include <asm/switch_to.h> +#include <asm/nmi.h> typedef void (*relocate_kernel_t)(kimage_entry_t *, unsigned long); @@ -102,6 +103,8 @@ static void __do_machine_kdump(void *image) */ static noinline void __machine_kdump(void *image) { + struct mcesa *mcesa; + unsigned long cr2_old, cr2_new; int this_cpu, cpu; lgr_info_log(); @@ -114,8 +117,16 @@ static noinline void __machine_kdump(void *image) continue; } /* Store status of the boot CPU */ + mcesa = (struct mcesa *)(S390_lowcore.mcesad & MCESA_ORIGIN_MASK); if (MACHINE_HAS_VX) - save_vx_regs((void *) &S390_lowcore.vector_save_area); + 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); + save_gs_cb((struct gs_cb *) mcesa->guarded_storage_save_area); + __ctl_load(cr2_old, 2, 2); + } /* * To create a good backchain for this CPU in the dump store_status * is passed the address of a function. The address is saved into |