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optimized Apple PPC kernel .config for 4.9.x series?
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reesm
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Joined: 02 Mar 2003
Posts: 39
Location: AB, Canada

PostPosted: Thu Nov 02, 2017 11:27 pm    Post subject: optimized Apple PPC kernel .config for 4.9.x series? Reply with quote

Has anybody made an optimized kernel .config as the subject states? I would prefer something that has only the options enabled for Apple Mac G4 systems.

I primarily run a rack of around a dozen XServes, a Powerbook G4 1.67 GHz and a pair of Quicksilver G4's, all with G4/7450 CPUs. So if you have a similar .config that will work, please help me out!

I am hoping to save time in configuring my kernel for PowerPC systems. There are a gazillion options, and most are unselected when starting a fresh install.

Background:
It's been many years since I've used Gentoo because of the extraordinary time I spent emerging instead of using my computers. However, since may distros are dropping PPC support (or even 32 bits!) I feel like Gentoo is one of the last great options. OpenBSD is another, but it's different enough that I don't feel like learning it yet.
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limn
l33t
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Joined: 13 May 2005
Posts: 997

PostPosted: Sat Nov 04, 2017 12:58 am    Post subject: Reply with quote

Here is a 4.9.11 config from a G3.
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reesm
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Joined: 02 Mar 2003
Posts: 39
Location: AB, Canada

PostPosted: Sun Nov 05, 2017 7:37 pm    Post subject: Reply with quote

Thanks! That helped me a lot. I used that plus the install disc's /proc/config.gz file to come up with something that boots.

Once I finish testing my kernel on my various machines, including getting the serial console on my Xserve's tested, I will try and remember to come back here and share it.
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schwarzygesetzlos
Tux's lil' helper
Tux's lil' helper


Joined: 11 Dec 2004
Posts: 120
Location: Funeralopolis

PostPosted: Mon Jan 22, 2018 3:22 pm    Post subject: Reply with quote

If you got your Powerbook G4 up and running, I would be very interested in your kernel .config! :wink: I plan to put Gentoo on mine in the next 1-2 month or so.

For a very well refined G5 kernel you can have a look at my forum thread: https://forums.gentoo.org/viewtopic-t-1055626.html
_________________
PMac G5 11,2. PMac G5 7,3. PBook G4 5,8. PBook G4 5,6. [MorphOS 3.10 / Gentoo Linux]
A1200. ACA-1233/55, Indivision AGA Mk2, 4 GiB CF. [Amiga OS 3.9]
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watersb
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Joined: 04 Sep 2002
Posts: 297
Location: where the hell is Tesuque, New Mexico?

PostPosted: Thu Feb 01, 2018 10:14 am    Post subject: Kernel Config - G4 Mac Mini Kernel 4.15.0 Reply with quote

Mac Mini G4 - Not fully tested, but seems like a start.

We boot ok. Drivers and file systems seem to load.

GCC 7.2.0, current Gentoo userland, Gentoo-Sources 4.15.0 , but still the old 13 profile. Switching to current Gentoo, Profile 17, is next step...

GCC Plugins for kernel data-structure sanitization crash, but all the other security-hardening Config Options seem ok.

Download a current copy of my config at
https://watersb.org/_transfer/config.gz


Many thanks to drobbins and his Funtoo Hosting. My website is not all that, another to-do item...

Did I mention this is unstable, still testing? Be careful out there :-)
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watersb
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Joined: 04 Sep 2002
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Location: where the hell is Tesuque, New Mexico?

PostPosted: Fri Feb 02, 2018 3:20 am    Post subject: Re: Kernel Config - G4 Mac Mini Kernel 4.15.0 Reply with quote

watersb wrote:


GCC Plugins for kernel data-structure sanitization crash, but all the other security-hardening Config Options seem ok.[/b]



UPDATE:

https://patchwork.kernel.org/patch/10054245/
I applied this patch, and just booted OK with these options:

Code:
CONFIG_HAVE_GCC_PLUGINS=y
CONFIG_GCC_PLUGINS=y
# CONFIG_GCC_PLUGIN_LATENT_ENTROPY is not set
# CONFIG_GCC_PLUGIN_STRUCTLEAK is not set
CONFIG_GCC_PLUGIN_RANDSTRUCT=y
CONFIG_GCC_PLUGIN_RANDSTRUCT_PERFORMANCE=y
# CONFIG_CC_STACKPROTECTOR is not set
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