linux-kernel - Re: [PATCH] decompressors: fix typo "POWERPC"

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Date:	Wed, 13 Mar 2013 13:05:39 +0100
From:	Paul Bolle <pebolle@...cali.nl>
To:	Lasse Collin <lasse.collin@...aani.org>
Cc:	Florian Fainelli <florian@...nwrt.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] decompressors: fix typo "POWERPC"

On Wed, 2013-03-13 at 13:30 +0200, Lasse Collin wrote:
> On 2013-03-12 Paul Bolle wrote:
> > 1) By the way: why does the XZ related code use both the macro
> > CONFIG_XZ_DEC_POWERPC and the macro XZ_DEC_POWERPC? (Ditto for other
> > architectures.) That looks odd.
> 
> In a preboot environment the options selected for the xz_dec module are
> ignored.

Naive question: what is a preboot environment?

> If XZ-compressed kernel is selected, lib/decompress_unxz.c
> will enable a BCJ filter for that architecture. An alternative could be
> to #undef the CONFIG_XZ_DEC_foo symbols in decompress_unxz.c and then
> #define what is needed for the selected architecture, but I think the
> current method is OK. See also lib/xz/xz_private.h.

Thanks,


Paul Bolle

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