aboutsummaryrefslogtreecommitdiffstats
path: root/arch/x86_64/kernel/smpboot.c
diff options
context:
space:
mode:
Diffstat (limited to '')
-rw-r--r--arch/x86_64/kernel/smpboot.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/x86_64/kernel/smpboot.c b/arch/x86_64/kernel/smpboot.c
index 62c2e747af58..4c161c208d5b 100644
--- a/arch/x86_64/kernel/smpboot.c
+++ b/arch/x86_64/kernel/smpboot.c
@@ -60,6 +60,7 @@
#include <asm/irq.h>
#include <asm/hw_irq.h>
#include <asm/numa.h>
+#include <asm/genapic.h>
/* Number of siblings per CPU package */
int smp_num_siblings = 1;
@@ -1167,6 +1168,13 @@ int __cpuinit __cpu_up(unsigned int cpu)
while (!cpu_isset(cpu, cpu_online_map))
cpu_relax();
+
+ if (num_online_cpus() > 8 && genapic == &apic_flat) {
+ printk(KERN_WARNING
+ "flat APIC routing can't be used with > 8 cpus\n");
+ BUG();
+ }
+
err = 0;
return err;