x86, NMI: NMI-selftest should handle the UP case properly
If no remote cpus are online, then just quietly skip the remote
IPI test for now.
Signed-off-by: Don Zickus <dzickus@redhat.com>
Cc: andi@firstfloor.org
Cc: torvalds@linux-foundation.org
Cc: peterz@infradead.org
Cc: robert.richter@amd.com
Link: http://lkml.kernel.org/r/20111206180859.GR1669@redhat.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/arch/x86/kernel/nmi_selftest.c b/arch/x86/kernel/nmi_selftest.c
index 572adb6..1e42a23 100644
--- a/arch/x86/kernel/nmi_selftest.c
+++ b/arch/x86/kernel/nmi_selftest.c
@@ -90,7 +90,8 @@
{
cpumask_copy(to_cpumask(nmi_ipi_mask), cpu_online_mask);
cpumask_clear_cpu(smp_processor_id(), to_cpumask(nmi_ipi_mask));
- test_nmi_ipi(to_cpumask(nmi_ipi_mask));
+ if (!cpumask_empty(nmi_ipi_mask))
+ test_nmi_ipi(to_cpumask(nmi_ipi_mask));
}
static void local_ipi(void)