linux-kernel - Re: [PATCH 02/11] x86/lib/cpio.c: Find cpio data by its file name

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Message-ID: <5030767C.1030009@zytor.com>
Date:	Sat, 18 Aug 2012 22:15:40 -0700
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Henrique de Moraes Holschuh <hmh@....eng.br>
CC:	"Yu, Fenghua" <fenghua.yu@...el.com>, Ingo Molnar <mingo@...e.hu>,
	Thomas Gleixner <tglx@...utronix.de>,
	"Mallick, Asit K" <asit.k.mallick@...el.com>,
	Tigran Aivazian <tigran@...azian.fsnet.co.uk>,
	Andreas Herrmann <andreas.herrmann3@....com>,
	Borislav Petkov <borislav.petkov@....com>,
	linux-kernel <linux-kernel@...r.kernel.org>, x86 <x86@...nel.org>
Subject: Re: [PATCH 02/11] x86/lib/cpio.c: Find cpio data by its file name

On 08/18/2012 09:35 PM, Henrique de Moraes Holschuh wrote:
> On Sat, 18 Aug 2012, Yu, Fenghua wrote:
>>> From: Henrique de Moraes Holschuh [mailto:hmh@....eng.br] On Sat, 18 Aug
>>> 2012, Fenghua Yu wrote:
>>>> Given a file's name, find its starting point in a cpio formated area.
>>> This will
>>>> be used to find microcode in combined initrd image. But this function
>>> is
>>>> generic and could be used in other places.
>>>
>>> Shouldn't this (very useful) feature get its own documentation in
>>> Documentation/ ?
>>
>> Yes, I can document the feature. And if it's generic and useful, this
>> function could be put in generic kernel instead of in x86 arch.
> 
> It is useful to override/fix all sort of critical firmware-provided tables,
> for example.  ACPI table overrides should use this new cpio-based scheme as
> well, and I recall someone wrote something about device tree overrides in a
> past thread...
> 

Indeed, we already have those two users already identified.

	-hpa


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