Re: Geode LX boot fails after x86 microcode revision change

[Borislav Petkov]

On Tue, Nov 08, 2011 at 04:17:21PM -0600, Daniel Drake wrote:
> 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
> > Âin 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.

Oh yeah, that.

> 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.

Yep, just send me /proc/cpuinfo from a working kernel.

Thanks.

-- 
Regards/Gruss,
   Boris
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