diff options
Diffstat (limited to 'arch/s390/kernel/setup.c')
| -rw-r--r-- | arch/s390/kernel/setup.c | 18 |
1 files changed, 15 insertions, 3 deletions
diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c index 911dc0b49be0..3ae756c0db3d 100644 --- a/arch/s390/kernel/setup.c +++ b/arch/s390/kernel/setup.c @@ -339,9 +339,15 @@ static void __init setup_lowcore(void) lc->stfl_fac_list = S390_lowcore.stfl_fac_list; memcpy(lc->stfle_fac_list, S390_lowcore.stfle_fac_list, MAX_FACILITY_BIT/8); - if (MACHINE_HAS_VX) - lc->vector_save_area_addr = - (unsigned long) &lc->vector_save_area; + if (MACHINE_HAS_VX || MACHINE_HAS_GS) { + unsigned long bits, size; + + bits = MACHINE_HAS_GS ? 11 : 10; + size = 1UL << bits; + lc->mcesad = (__u64) memblock_virt_alloc(size, size); + if (MACHINE_HAS_GS) + lc->mcesad |= bits; + } lc->vdso_per_cpu_data = (unsigned long) &lc->paste[0]; lc->sync_enter_timer = S390_lowcore.sync_enter_timer; lc->async_enter_timer = S390_lowcore.async_enter_timer; @@ -779,6 +785,12 @@ static int __init setup_hwcaps(void) elf_hwcap |= HWCAP_S390_VXRS_BCD; } + /* + * Guarded storage support HWCAP_S390_GS is bit 12. + */ + if (MACHINE_HAS_GS) + elf_hwcap |= HWCAP_S390_GS; + get_cpu_id(&cpu_id); add_device_randomness(&cpu_id, sizeof(cpu_id)); switch (cpu_id.machine) { |