x86: Don't copy per_cpu cpuinfo for BSP two times

smp_store_cpu_info(0) will do that.

Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Cc: Suresh Siddha <suresh.b.siddha@intel.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
LKML-Reference: <4D3A16F2.5090902@kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c
index d396155..a7a3d1a 100644 (file)
--- a/arch/x86/kernel/smpboot.c
+++ b/arch/x86/kernel/smpboot.c
@@ -1071,13 +1071,13 @@ void __init native_smp_prepare_cpus(unsigned int max_cpus)
 
        preempt_disable();
        smp_cpu_index_default();
-       memcpy(__this_cpu_ptr(&cpu_info), &boot_cpu_data, sizeof(cpu_info));
-       cpumask_copy(cpu_callin_mask, cpumask_of(0));
-       mb();
+
        /*
         * Setup boot CPU information
         */
        smp_store_cpu_info(0); /* Final full version of the data */
+       cpumask_copy(cpu_callin_mask, cpumask_of(0));
+       mb();
 #ifdef CONFIG_X86_32
        boot_cpu_logical_apicid = logical_smp_processor_id();
 #endif