diff options
Diffstat (limited to 'arch/ppc64/kernel/xics.c')
| -rw-r--r-- | arch/ppc64/kernel/xics.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/arch/ppc64/kernel/xics.c b/arch/ppc64/kernel/xics.c index 879f39b90a33..d9dc6f28d050 100644 --- a/arch/ppc64/kernel/xics.c +++ b/arch/ppc64/kernel/xics.c @@ -647,6 +647,32 @@ static void xics_set_affinity(unsigned int virq, cpumask_t cpumask) } } +void xics_teardown_cpu(int secondary) +{ + int cpu = smp_processor_id(); + + ops->cppr_info(cpu, 0x00); + iosync(); + + /* + * Some machines need to have at least one cpu in the GIQ, + * so leave the master cpu in the group. + */ + if (secondary) { + /* + * we need to EOI the IPI if we got here from kexec down IPI + * + * probably need to check all the other interrupts too + * should we be flagging idle loop instead? + * or creating some task to be scheduled? + */ + ops->xirr_info_set(cpu, XICS_IPI); + rtas_set_indicator(GLOBAL_INTERRUPT_QUEUE, + (1UL << interrupt_server_size) - 1 - + default_distrib_server, 0); + } +} + #ifdef CONFIG_HOTPLUG_CPU /* Interrupts are disabled. */ |
