diff options
Diffstat (limited to 'arch/s390')
| -rw-r--r-- | arch/s390/mm/mem_detect.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/arch/s390/mm/mem_detect.c b/arch/s390/mm/mem_detect.c index 22d502e885ed..fb216e11c25d 100644 --- a/arch/s390/mm/mem_detect.c +++ b/arch/s390/mm/mem_detect.c @@ -47,19 +47,21 @@ static void find_memory_chunks(struct mem_chunk chunk[]) void detect_memory_layout(struct mem_chunk chunk[]) { - unsigned long flags, cr0; + unsigned long flags, flags_dat, cr0; memset(chunk, 0, MEMORY_CHUNKS * sizeof(struct mem_chunk)); /* Disable IRQs, DAT and low address protection so tprot does the * right thing and we don't get scheduled away with low address * protection disabled. */ - flags = __arch_local_irq_stnsm(0xf8); + local_irq_save(flags); + flags_dat = __arch_local_irq_stnsm(0xfb); __ctl_store(cr0, 0, 0); __ctl_clear_bit(0, 28); find_memory_chunks(chunk); __ctl_load(cr0, 0, 0); - arch_local_irq_restore(flags); + __arch_local_irq_ssm(flags_dat); + local_irq_restore(flags); } EXPORT_SYMBOL(detect_memory_layout); |