Messages in this thread |  | | Date | Tue, 08 Jan 2013 12:16:21 -0800 | From | "H. Peter Anvin" <> | Subject | Re: [PATCH v5 00/12] x86/microcode: Early load microcode |
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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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