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Re: PR 36158 (>256MB in O2)


On Sun, 3 Mar 2013 09:21:09 +0100
Martin Husemann <martin%duskware.de@localhost> wrote:

> Out of curiosity:
> what is missing now for a N64 kernel? I had the impression other mips archs
> do that now, so it can not be too much.
> Martin
> (I need to fix the rtc in my O2 and try)

Older MIPS CPUs ( not sure if it's all of them or just R5k and the like ) have 
some cache issues ( and had them for a long time, the last working 
kernel/userland I have is 5.99.17 vintage ) - corruption happens when data gets 
moved between processes. I don't see this on Loongson hardware although there's 
still corruption on NFS writes ( not sure if that's the same issue though )
Otherwise, N32 kernels with N32 userlands work more or less. I didn't try N64 
on my O2 yet but I'd expect some trouble ( kseg vs. xphys, assumptions about 
LP32 etc. )

have fun

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