Re: [tip:x86/microcode] x86/microcode_intel_early.c: Early updateucode on Intel's CPU

From: Jacob Shin
Date: Wed Dec 19 2012 - 19:29:57 EST


On Wed, Dec 19, 2012 at 04:24:09PM -0800, H. Peter Anvin wrote:
> On 12/19/2012 04:07 PM, Jacob Shin wrote:
> >
> > From what I remember, accessing memory around the memory hole (not
> > just the HT hole, but e038000000 ~ 10000000000 on our mentioned system
> > ) generated prefetches because the memory hole was marked as WB in PAT.
> >
> > I'll take a look at the system again, try the blanket MTRR covering
> > 0xe000000000 ~ 1TB, and talk to our BIOS guys.
> >
>
> Yes, but do they all #MC (as opposed to, say, fetching all FFs)?

Yes, MCE every time and it was fatal.

>
> -hpa
>
>
>

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