On Aug 20, 2016 4:50 PM, "Andrew Lutomirski" <luto@xxxxxxx> wrote:
>
>
> How about ordinary earlyprintk to serial?
>
> Try booting with nokaslr, though. There was a bug, now fixed upstream (I think) that broke AMD early microcode if kaslr was used. You would likely trigger it only on systems for which an early update exists.
The patch is http://git.kernel.org/tip/88b2f634028f1f38dcc3d412e10ff1f224976daa
>
> --Andy
>
> >
> > --
> > Chris Murphy
> > --
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