Re: powerpc: Enable kernel XZ compression option on 44x

On Friday, February 8, 2019 2:02:41 PM CET Michael Ellerman wrote:

On Thu, 2019-01-31 at 20:59:04 UTC, Christian Lamparter wrote:

quoted

Enable kernel XZ compression option on 44x.
Tested on a Western Digital - MyBook Live NAS.
It takes 22 seconds for the 800 MHz CPU to decompress
and boot a 2.63 MiB XZ-compressed kernel simpleImage.

Signed-off-by: Christian Lamparter <redacted>

Applied to powerpc next, thanks.

https://git.kernel.org/powerpc/c/423bfc69d7f491c47fc35921f7d460be

cheers

Hello,

I'm happy to report that a xz compressed kernel (as simpleImage)
also booted on a TP-Link WDR4900-v1 (Freescale P1014):
<https://github.com/openwrt/openwrt/pull/1773#issuecomment-461082045>

Hence, I'm inclined to also add PPC_85xx to list in /arch/powerpc/KConfig

|select HAVE_KERNEL_XZ			if PPC_BOOK3S || 44x || PPC_85xx

But on the other hand, it could very well be that more or all? PPC
would benifit from having HAVE_KERNEL_XZ available. What do you think?
(If you know of any interesting ARCHs, I could ask around too.)

Regards,
Christian