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Diffstat (limited to 'arch/ppc64/kernel/xics.c')
-rw-r--r--arch/ppc64/kernel/xics.c31
1 files changed, 16 insertions, 15 deletions
diff --git a/arch/ppc64/kernel/xics.c b/arch/ppc64/kernel/xics.c
index 677c4450984a..d9dc6f28d050 100644
--- a/arch/ppc64/kernel/xics.c
+++ b/arch/ppc64/kernel/xics.c
@@ -647,29 +647,30 @@ static void xics_set_affinity(unsigned int virq, cpumask_t cpumask)
}
}
-void xics_teardown_cpu(void)
+void xics_teardown_cpu(int secondary)
{
int cpu = smp_processor_id();
- int status;
ops->cppr_info(cpu, 0x00);
iosync();
/*
- * we need to EOI the IPI if we got here from kexec down IPI
- *
- * xics doesn't care if we duplicate an EOI as long as we
- * don't EOI and raise priority.
- *
- * probably need to check all the other interrupts too
- * should we be flagging idle loop instead?
- * or creating some task to be scheduled?
+ * Some machines need to have at least one cpu in the GIQ,
+ * so leave the master cpu in the group.
*/
- ops->xirr_info_set(cpu, XICS_IPI);
-
- status = rtas_set_indicator(GLOBAL_INTERRUPT_QUEUE,
- (1UL << interrupt_server_size) - 1 - default_distrib_server, 0);
- WARN_ON(status != 0);
+ 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