Comment # 1 on bug 1135854 from Takashi Iwai

Thanks for opening this bug entry.  I looked at this scenario in the last week,
too, and I'd love to have this enabled.

In my experiment, I didn't change dracut to uncompress, but yes, that's more
efficient, indeed.

But, the debuginfo extraction doesn't seem working as is for *.ko.xz.
This seems requiring to hack rpm itself.  The hacked version is found in OBS
home:tiwai:test:kernel-compress repo.

And, what's still not checked is about our signing procedure.  This needs more
checks by other people...