diff options
Diffstat (limited to 'arch/s390/kernel/smp.c')
| -rw-r--r-- | arch/s390/kernel/smp.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c index 6c8a977af59..3bde5688ceb 100644 --- a/arch/s390/kernel/smp.c +++ b/arch/s390/kernel/smp.c @@ -209,12 +209,19 @@ static void do_ext_call_interrupt(unsigned int ext_int_code, */ static void smp_ext_bitcall(int cpu, int sig) { + int order; + /* * Set signaling bit in lowcore of target cpu and kick it */ set_bit(sig, (unsigned long *) &lowcore_ptr[cpu]->ext_call_fast); - while (sigp(cpu, sigp_emergency_signal) == sigp_busy) + while (1) { + order = smp_vcpu_scheduled(cpu) ? + sigp_external_call : sigp_emergency_signal; + if (sigp(cpu, order) != sigp_busy) + break; udelay(10); + } } void arch_send_call_function_ipi_mask(const struct cpumask *mask) @@ -754,6 +761,9 @@ void __init smp_prepare_cpus(unsigned int max_cpus) /* request the 0x1201 emergency signal external interrupt */ if (register_external_interrupt(0x1201, do_ext_call_interrupt) != 0) panic("Couldn't request external interrupt 0x1201"); + /* request the 0x1202 external call external interrupt */ + if (register_external_interrupt(0x1202, do_ext_call_interrupt) != 0) + panic("Couldn't request external interrupt 0x1202"); /* Reallocate current lowcore, but keep its contents. */ lowcore = (void *) __get_free_pages(GFP_KERNEL | GFP_DMA, LC_ORDER); |