PPC64: G5 & 4k/64k page size (was: Re: Call for report - G5/PPC970 status)

Jeroen Diederen jjhdiederen at zonnet.nl
Sat Dec 14 20:32:13 AEDT 2019


on my iMac iSight:


grep CONFIG_PPC.*PAGE config-5.3.0-3-powerpc64 
# CONFIG_PPC_4K_PAGES is not set
CONFIG_PPC_64K_PAGES=y
CONFIG_PPC_PAGE_SHIFT=16
# CONFIG_PPC_SUBPAGE_PROT is not set

I can't give you info about the G5 PowerMac 7,3 as it is not my machine.

Regards,
Jeroen

On Fri, 13 Dec 2019 08:47:49 +0100
Romain Dolbeau <romain at dolbeau.org> wrote:

> Le jeu. 12 déc. 2019 à 22:40, Andreas Schwab <schwab at linux-m68k.org> a écrit :
> > I'm using 4K pages, in case that matters
> 
> Yes it does matter, as it seems to be the difference between "working"
> and "not working" :-)
> Thank you for the config & pointing out the culprit!
> 
> With your config, my machine boots (though it's missing some features
> as the config seems quite tuned).
> 
> Moving from 64k pages to 4k pages on 'my' config (essentially,
> Debian's 5.3 with default values for changes since), my machine boots
> as well & everything seems to work fine.
> 
> So question to Aneesh - did you try 64k pages on your G5, or only 4k?
> In the second case, could you try with 64k to see if you can reproduce
> the crash?
> 
> To Jeroen - is your iMac booting with 4k or 64k pages? Same question
> for the crashing G5, though I assume the answer is going to be 64k
> there.
> 
> Thanks & cordially,
> 
> -- 
> Romain Dolbeau


-- 
Jeroen Diederen <jjhdiederen at zonnet.nl>


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