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    Subject[PATCH v5 04/12] x86/common.c: load ucode in 64 bit or show loading ucode info in 32 bit on AP
    Date
    From: Fenghua Yu <fenghua.yu@intel.com>

    In 64 bit, load ucode on AP in cpu_init().

    In 32 bit, show ucode loading info on AP in cpu_init(). Microcode has been
    loaded earlier before paging. Now it is safe to show the loading microcode
    info on this AP.

    Signed-off-by: Fenghua Yu <fenghua.yu@intel.com>
    ---
    arch/x86/kernel/cpu/common.c | 8 ++++++++
    1 file changed, 8 insertions(+)

    diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c
    index d7fd246..d814772 100644
    --- a/arch/x86/kernel/cpu/common.c
    +++ b/arch/x86/kernel/cpu/common.c
    @@ -1220,6 +1220,12 @@ void __cpuinit cpu_init(void)
    int cpu;
    int i;

    + /*
    + * Load microcode on this cpu if a valid microcode is available.
    + * This is early microcode loading procedure.
    + */
    + load_ucode_ap();
    +
    cpu = stack_smp_processor_id();
    t = &per_cpu(init_tss, cpu);
    oist = &per_cpu(orig_ist, cpu);
    @@ -1311,6 +1317,8 @@ void __cpuinit cpu_init(void)
    struct tss_struct *t = &per_cpu(init_tss, cpu);
    struct thread_struct *thread = &curr->thread;

    + show_ucode_info_early();
    +
    if (cpumask_test_and_set_cpu(cpu, cpu_initialized_mask)) {
    printk(KERN_WARNING "CPU#%d already initialized!\n", cpu);
    for (;;)
    --
    1.8.0.1


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