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-rw-r--r--arch/x86_64/kernel/setup64.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/x86_64/kernel/setup64.c b/arch/x86_64/kernel/setup64.c
index bd33be24a386..79190891fbc5 100644
--- a/arch/x86_64/kernel/setup64.c
+++ b/arch/x86_64/kernel/setup64.c
@@ -87,6 +87,10 @@ void __init setup_per_cpu_areas(void)
int i;
unsigned long size;
+#ifdef CONFIG_HOTPLUG_CPU
+ prefill_possible_map();
+#endif
+
/* Copy section for each CPU (we discard the original) */
size = ALIGN(__per_cpu_end - __per_cpu_start, SMP_CACHE_BYTES);
#ifdef CONFIG_MODULES