[PATCH v2] ARM: support XZ compressed kernels

[kaloz@openwrt.org (Imre Kaloz)]

On Fri, 22 Jul 2011 14:50:36 +0200, Russell King - ARM Linux <linux@arm.linux.org.uk> wrote:

> On Fri, Jul 22, 2011 at 10:57:38AM +0100, Russell King - ARM Linux wrote:
>> What I'm concerned about is the apparant lack of exposure of the patch
>> to people outside of ARM, especially as it touches lib/xz/xz_dec_stream.c.
>>
>> I have no idea whether that breaks some architecture or not.
>>
>> Is Lasse Collin (the original contributer of that file) aware of this
>> change?
>
> I forwarded it to Lasse, and got some comments back... essentially
> putting includes in xz_dec_stream.c could be problematical.  Lasse
> would - as I did - like to have the full information on why the
> include was necessary.
>
> Lasse is - again like me - concerned about dragging stuff into the
> pre-boot environment which can cause it to fail unexpectedly,
> especially as linux/kernel.h includes a whole raft of other includes.
>
> What I don't understand is if this code requires min_t, where does it
> get this for everyone else - that's something to be discussed in the
> wider discussion over this.  Does it build outside of the decompressor
> on ARM already?
>
> So... given the increasing number of questions over this, I think you
> need to put something together which describes the problem, how its
> caused, why it seems to only exhibit on ARM, and discuss solutions
> with all those involved.  I know Lasse is very interested to find out
> more information about your patch...
>
> But in the mean time, this isn't a patch for 3.1.
>

I've already proposed the right way to fix it in http://lists.arm.linux.org.uk/lurker/message/20110722.102718.6e9fe66c.en.html


Imre