unrecoverable exception on G5 with CONFIG_PPC_EARLY_DEBUG enabled

[Denis Kirjanov]

Update: now with the proper mailing address.

Hi,

Posting if anyone knows how to quickly fix it :)
Enabling  CONFIG_PPC_EARLY_DEBUG on my quad G5 causes kernel to die
with the  unrecoverable exception 4100.

I haven't bisected this yet. Photo attached.

Thanks!
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