Re: [tip:x86/microcode] x86/microcode_intel_early.c: Early updateucode on Intel's CPU

From: H. Peter Anvin
Date: Tue Dec 11 2012 - 14:33:18 EST


On 12/11/2012 11:18 AM, Yinghai Lu wrote:
>
> that will be bunch of asm code again, and need to parse the setup_header in that
> asm to get range value for those regions...
>

It's an index into an array, it's not "parsing".

>>
>>> but if the user memmap to exclude some page, we will still need to
>>> relocate the ramdisk.
>>
>> -ENOPARSE
>
> .. I mean pointer for saved ucode will be updated then again.
> and relocated_initrd wil still need to use ioremap because init_memory_mapping
> will clean mapping the range range that is excluded by memmap=XX$YY
>
>>
>> I really need to look at this in more detail. I'm starting to think
>> this is done completely backwards.
>
> really should not put asm code if it could be done in C in not complicated way.
>

Uhm... that's not what I'm talking about.

-hpa

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