From: Fenghua Yu <fenghua...@intel.com>
This updates ucode on AP. At this point, BSP should store some valid ucode
patches in memory if it finds the ucode patches in initrd. AP searches the
stored ucode and uploads the ucode.
Signed-off-by: Fenghua Yu <fenghua...@intel.com>
---
arch/x86/kernel/smpboot.c | 7 +++++++
1 files changed, 7 insertions(+), 0 deletions(-)
diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c
index 732bf5c..025690a 100644
--- a/arch/x86/kernel/smpboot.c
+++ b/arch/x86/kernel/smpboot.c
@@ -76,6 +76,7 @@
#include <asm/i8259.h>
#include <asm/realmode.h>
+#include <asm/microcode.h>
/* State of each CPU */
DEFINE_PER_CPU(int, cpu_state) = { 0 };
@@ -239,6 +240,12 @@ notrace static void __cpuinit start_secondary(void *unused)
* most necessary things.
*/
cpu_init();
+ /*
+ * Load microcode on this cpu if a valid microcode is available.
+ * This is early microcode loading procedure.
+ */
+ load_ucode_ap();
+
x86_cpuinit.early_percpu_clock_init();
preempt_disable();
smp_callin();
--
1.7.2
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