On 01/08/2013 12:04 PM, Konrad Rzeszutek Wilk wrote:
>>
>> Why is this code invoked on Xen at all? That seems crazy.
>
> [PATCH v4 09/11] x86/head64.c: Early update ucode in 64-bit
>
> has this in x86_64_start_kernel:
>
> ..
> load_idt((const struct desc_ptr *)&idt_descr);
>
> + /*
> + * Load microcode early on BSP.
> + */
> + load_ucode_bsp(__va(real_mode_data));
> +
> copy_bootdata(__va(real_mode_data));
>
> Which gets called after xen_start_kernel has setup pagetables,
> bootparams, etc ready for the generic code to be invoked.
>
> Or am I looking at an old version of these patches.
We really shouldn't do that in that flow. This doesn't make sense on
non-native.
-hpa
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