UP load_up_fpu crash (2.6.8-rc2)

[Dave Hansen]

On Fri, 2004-07-23 at 23:43, Nathan Lynch wrote:
> We seem to be broken with CONFIG_SMP=n on 2.6.8-rc2 and 2.6.8-rc1-mm1:
>
> Freeing unused kernel memory: 280k freed
> INIT: version 2.85 booting
> Vector: 300 (Data Access) at [c00000003f043bb0]
>     pc: c00000000000bab0: .load_up_fpu+0xb0/0x16c
...
> --- Exception: 801 (FPU Unavailable) at 000000004000b908
> SP (ffffe480) is in userspace
>
>
> Any ideas?  I've seen this on pSeries lpar, haven't tried anything
> else.  SMP kernels are fine.  I'll try to track down the version where
> this first appeared as time permits.

I was seeing the same exception, but in a slightly different place.  I
_think_ I saw it within some altivec code.  I thought it was related to
the failed CPU bringup.  I'll post it if I see it again.

-- Dave


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