Re: Geode LX boot fails after x86 microcode revision change

[Daniel Drake]

On Tue, Nov 8, 2011 at 4:13 PM, Petkov, Borislav
<Borislav.Petkov@xxxxxxx> wrote:
> This could definitely explain why it hangs, the rdmsr_safe call is
>  in early_init_amd(), so it could really be too early for exception tables.

I think this is almost certainly the cause too. The symptoms of this
issue are exactly the same as the early boot hang once discussed in a
thread titled "Dynamic nop selection breaks boot on Geode LX" (which
you wrote to as well) which was a problem of running code before
having exception tables set up.

I haven't yet run your tests except for "rdmsr 0x8b" which returns
"pread: Input/output error" - let me know if you would still like
results from the other tests.

Thanks
Daniel
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