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x86/common.c: load ucode in 64 bit or show loading ucode info in 32 bit on AP

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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>
Link: http://lkml.kernel.org/r/1356075872-3054-5-git-send-email-fenghua.yu@intel.com
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
This commit is contained in:
Fenghua Yu 2012-12-20 23:44:24 -08:00 committed by H. Peter Anvin
parent d288e1cf8e
commit e6ebf5deaa
1 changed files with 8 additions and 0 deletions
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8
arch/x86/kernel/cpu/common.c
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@ -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 (;;)