Re: [PATCH 4/6] Add support for LZO-compressed kernels for ARM

[Russell King - ARM Linux]

On Mon, Aug 03, 2009 at 04:58:19PM +0200, Albin Tonnerre wrote:
> This is the second part of patch. This part includes:
>  - changes to ach/arch/boot/Makefile to make it easier to add new
>    compression types
>  - new piggy.lzo.S necessary for lzo compression
>  - changes in arch/arm/boot/compressed/misc.c to allow the use of lzo or
>    gzip, depending on the config
>  - Kconfig support

FYI, with these patches applied and selecting GZIP method, I get
linker errors.  I've been unable to track down what's going on, but
it appears to be a libgcc issue.

In spite of the decompressor being built as an EABI object, gcc seems
to be issuing calls to __umodsi3, which isn't in the EABI libgcc
(they're called something different - don't ask.)

So I think these patches need further testing and evaluation on ARM
before they can be merged.  Moreover, I'd like to see some comparisons
between the _current_ gzip method, the new gzip method and the lzo
method on ARM.

I was going to get those numbers, but the platform I was going to run
the tests on has died on me today.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/