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

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Message-ID: <20120819043504.GA9773@khazad-dum.debian.net>
Date:	Sun, 19 Aug 2012 01:35:04 -0300
From:	Henrique de Moraes Holschuh <hmh@....eng.br>
To:	"Yu, Fenghua" <fenghua.yu@...el.com>
Cc:	H Peter Anvin <hpa@...or.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 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...

-- 
  "One disk to rule them all, One disk to find them. One disk to bring
  them all and in the darkness grind them. In the Land of Redmond
  where the shadows lie." -- The Silicon Valley Tarot
  Henrique Holschuh
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