On Sun, Dec 16, 2012 at 2:43 AM, Fenghua Yu <fenghua...@intel.com> wrote:
> From: Fenghua Yu <fenghua...@intel.com>
>
> This updates ucode in 64-bit mode. Paging and virtual address are working now.
>
> Signed-off-by: Fenghua Yu <fenghua...@intel.com>
> ---
> arch/x86/kernel/head64.c | 6 ++++++
> 1 file changed, 6 insertions(+)
>
> diff --git a/arch/x86/kernel/head64.c b/arch/x86/kernel/head64.c
> index 037df57..a512f56 100644
> --- a/arch/x86/kernel/head64.c
> +++ b/arch/x86/kernel/head64.c
> @@ -25,6 +25,7 @@
> #include <asm/kdebug.h>
> #include <asm/e820.h>
> #include <asm/bios_ebda.h>
> +#include <asm/microcode.h>
>
> static void __init zap_identity_mappings(void)
> {
> @@ -73,6 +74,11 @@ void __init x86_64_start_kernel(char * real_mode_data)
> /* clear bss before set_intr_gate with early_idt_handler */
> clear_bss();
>
> + /*
> + * Load microcode early on BSP.
> + */
> + load_ucode_bsp(real_mode_data);
> +
> /* Make NULL pointers segfault */
> zap_identity_mappings();
>
So this patchset is after #PF handler set early page table version?
then load_ucode_bsp() should be after
load_idt((const struct desc_ptr *)&idt_descr);
otherwise it will not work.
Yinghai
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