diff options
Diffstat (limited to 'arch/s390/kernel/smp.c')
| -rw-r--r-- | arch/s390/kernel/smp.c | 39 |
1 files changed, 27 insertions, 12 deletions
diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c index fdfcf0488b4..85222fee436 100644 --- a/arch/s390/kernel/smp.c +++ b/arch/s390/kernel/smp.c @@ -284,7 +284,7 @@ static void do_machine_restart(void * __unused) * locks are always held disabled). */ if (MACHINE_IS_VM) - cpcmd ("IPL", NULL, 0); + cpcmd ("IPL", NULL, 0, NULL); else reipl (0x10000 | S390_lowcore.ipl_device); } @@ -313,7 +313,7 @@ static void do_machine_halt(void * __unused) if (atomic_compare_and_swap(-1, smp_processor_id(), &cpuid) == 0) { smp_send_stop(); if (MACHINE_IS_VM && strlen(vmhalt_cmd) > 0) - cpcmd(vmhalt_cmd, NULL, 0); + cpcmd(vmhalt_cmd, NULL, 0, NULL); signal_processor(smp_processor_id(), sigp_stop_and_store_status); } @@ -332,7 +332,7 @@ static void do_machine_power_off(void * __unused) if (atomic_compare_and_swap(-1, smp_processor_id(), &cpuid) == 0) { smp_send_stop(); if (MACHINE_IS_VM && strlen(vmpoff_cmd) > 0) - cpcmd(vmpoff_cmd, NULL, 0); + cpcmd(vmpoff_cmd, NULL, 0, NULL); signal_processor(smp_processor_id(), sigp_stop_and_store_status); } @@ -375,7 +375,7 @@ static void smp_ext_bitcall(int cpu, ec_bit_sig sig) * Set signaling bit in lowcore of target cpu and kick it */ set_bit(sig, (unsigned long *) &lowcore_ptr[cpu]->ext_call_fast); - while(signal_processor(cpu, sigp_external_call) == sigp_busy) + while(signal_processor(cpu, sigp_emergency_signal) == sigp_busy) udelay(10); } @@ -394,7 +394,7 @@ static void smp_ext_bitcall_others(ec_bit_sig sig) * Set signaling bit in lowcore of target cpu and kick it */ set_bit(sig, (unsigned long *) &lowcore_ptr[cpu]->ext_call_fast); - while (signal_processor(cpu, sigp_external_call) == sigp_busy) + while (signal_processor(cpu, sigp_emergency_signal) == sigp_busy) udelay(10); } } @@ -537,7 +537,8 @@ int __devinit start_secondary(void *cpuvoid) #endif #ifdef CONFIG_PFAULT /* Enable pfault pseudo page faults on this cpu. */ - pfault_init(); + if (MACHINE_IS_VM) + pfault_init(); #endif /* Mark this cpu as online */ cpu_set(smp_processor_id(), cpu_online_map); @@ -679,16 +680,19 @@ __cpu_disable(void) { unsigned long flags; ec_creg_mask_parms cr_parms; + int cpu = smp_processor_id(); spin_lock_irqsave(&smp_reserve_lock, flags); - if (smp_cpu_reserved[smp_processor_id()] != 0) { + if (smp_cpu_reserved[cpu] != 0) { spin_unlock_irqrestore(&smp_reserve_lock, flags); return -EBUSY; } + cpu_clear(cpu, cpu_online_map); #ifdef CONFIG_PFAULT /* Disable pfault pseudo page faults on this cpu. */ - pfault_fini(); + if (MACHINE_IS_VM) + pfault_fini(); #endif /* disable all external interrupts */ @@ -749,9 +753,9 @@ void __init smp_prepare_cpus(unsigned int max_cpus) unsigned int cpu; int i; - /* request the 0x1202 external interrupt */ - if (register_external_interrupt(0x1202, do_ext_call_interrupt) != 0) - panic("Couldn't request external interrupt 0x1202"); + /* request the 0x1201 emergency signal external interrupt */ + if (register_external_interrupt(0x1201, do_ext_call_interrupt) != 0) + panic("Couldn't request external interrupt 0x1201"); smp_check_cpus(max_cpus); memset(lowcore_ptr,0,sizeof(lowcore_ptr)); /* @@ -771,13 +775,24 @@ void __init smp_prepare_cpus(unsigned int max_cpus) *(lowcore_ptr[i]) = S390_lowcore; lowcore_ptr[i]->async_stack = stack + (ASYNC_SIZE); -#ifdef CONFIG_CHECK_STACK stack = __get_free_pages(GFP_KERNEL,0); if (stack == 0ULL) panic("smp_boot_cpus failed to allocate memory\n"); lowcore_ptr[i]->panic_stack = stack + (PAGE_SIZE); +#ifndef __s390x__ + if (MACHINE_HAS_IEEE) { + lowcore_ptr[i]->extended_save_area_addr = + (__u32) __get_free_pages(GFP_KERNEL,0); + if (lowcore_ptr[i]->extended_save_area_addr == 0) + panic("smp_boot_cpus failed to " + "allocate memory\n"); + } #endif } +#ifndef __s390x__ + if (MACHINE_HAS_IEEE) + ctl_set_bit(14, 29); /* enable extended save area */ +#endif set_prefix((u32)(unsigned long) lowcore_ptr[smp_processor_id()]); for_each_cpu(cpu) |