[arch-general] xz compression in kernel 2.6.38

[KESHAV P.R.]

On Wed, Mar 16, 2011 at 20:12, KESHAV P.R. <skodabenz at gmail.com> wrote:
> On Wed, Mar 16, 2011 at 20:09, Gaetan Bisson <bisson at archlinux.org> wrote:
>> [2011-03-16 19:58:23 +0530] KESHAV P.R.:
>>> Now that kernel 2.6.38 supports xz (lzma2, not lzma), how
>>> about using it as the default compression for the kernel and
>>> initramfs. mkinitcpio simply requires COMPRESSION="xz" to generate
>>> lzma2 compressed initramfs. But xz compressed kernel requires change
>>> in the config option and once module-init-toools supports xz
>>> compressed modules we can say good bye to gzip.
>>

mkinitcpio.conf requires COMPRESSION="xz --check=crc32" , not simply
"xz" since crc64 (default) checksum is not supported by kernel
de-compressor. See
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=blob;f=Documentation/xz.txt;hb=HEAD
.

- Keshav