diff options
Diffstat (limited to 'arch/s390/kernel/smp.c')
| -rw-r--r-- | arch/s390/kernel/smp.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c index 77f4f334a465..29e5409c0d48 100644 --- a/arch/s390/kernel/smp.c +++ b/arch/s390/kernel/smp.c @@ -360,9 +360,13 @@ void smp_call_online_cpu(void (*func)(void *), void *data) */ void smp_call_ipl_cpu(void (*func)(void *), void *data) { + struct _lowcore *lc = pcpu_devices->lowcore; + + if (pcpu_devices[0].address == stap()) + lc = &S390_lowcore; + pcpu_delegate(&pcpu_devices[0], func, data, - pcpu_devices->lowcore->panic_stack - - PANIC_FRAME_OFFSET + PAGE_SIZE); + lc->panic_stack - PANIC_FRAME_OFFSET + PAGE_SIZE); } int smp_find_processor_id(u16 address) @@ -1152,7 +1156,11 @@ static ssize_t __ref rescan_store(struct device *dev, { int rc; + rc = lock_device_hotplug_sysfs(); + if (rc) + return rc; rc = smp_rescan_cpus(); + unlock_device_hotplug(); return rc ? rc : count; } static DEVICE_ATTR(rescan, 0200, NULL, rescan_store); |