Re: problem with "undefined instruction"

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On Sat, Apr 30, 2011 at 06:23:57PM +0200, Sebastian Reichel wrote:
> I'm currently trying to get a mainline based kernel running on my pandaboard.
> The problem is, that it's crashing very early during the init phase because of
> "undefined instruction" exceptions:
> 
> [    1.867980] udevd (56): undefined instruction: pc=401e6ed4
> [    1.874603] Code: 9cd0 fffe e92d 4ff0 (ed2d)
> [    1.977752] modprobe (69): undefined instruction: pc=400c6ed4
> [    1.977783] Code: 9cd0 fffe e92d 4ff0 (ed2d)
> [    1.978240] init (1): undefined instruction: pc=40149ed4
> [    1.978240] Code: 9cd0 fffe e92d 4ff0 (ed2d)
> [    2.005706] Kernel panic - not syncing: Attempted to kill init!
>
> Exactly the same userland boots fine with the original 2.6.35 kernel, so it's
> probably not the userland's fault.

I found the source of this problem. VFPv3 support is not working
correctly when OMAP2 (and thus CPU_V6) is enabled in the kernel
config.

I guess this should be mentioned in the kernel config (or fixed if
possible).

-- Sebastian

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