[arch-releng] [PATCH 1/1] concatenate initramfs images for early microcode update

[Thomas Bächler]

Am 29.10.2014 um 16:48 schrieb Christian Hesse:
> Christian Hesse <list at eworm.de> on Wed, 2014/10/29 16:18:
>> As said before... This does not work. Please prove me wrong!
> 
> This explains the details:
> 
> https://lists.debian.org/debian-user/2013/07/msg00383.html
> 
> Henrique de Moraes Holschuh wrote:
> 
> 	it will read any mix of compressed and uncompressed cpio archives
> 	appended one after the other.  However, the early initramfs for
> 	firmware and microcode update *must* be uncompressed, and it *must*
> 	be the first cpio image in the initramfs
> 

This is wrong - it will read any number of uncompressed initramfs until
it finds a compressed one. You can add two initramfs (one for AMD and
one for Intel) in any order and it will find the ucode. This works
because the concatenation of two uncompressed cpio images looks just
like a single cpio image AFAIK.


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