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>
---
arch/powerpc/Kconfig | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index 2890d36eb531..58b6ad3555e0 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -201,7 +201,7 @@ config PPC
select HAVE_IOREMAP_PROT
select HAVE_IRQ_EXIT_ON_IRQ_STACK
select HAVE_KERNEL_GZIP
- select HAVE_KERNEL_XZ if PPC_BOOK3S
+ select HAVE_KERNEL_XZ if PPC_BOOK3S || 44x
select HAVE_KPROBES
select HAVE_KPROBES_ON_FTRACE
select HAVE_KRETPROBES
--
2.20.1
On Thu, 2019-01-31 at 20:59:04 UTC, Christian Lamparter wrote:
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
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