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Re: [Xen-devel] Windows HVM no longer boots with AMD Ryzen 3700X


  • To: Andreas Kinzler <hfp@xxxxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxxx>, <Paul.Durrant@xxxxxxxxxx>
  • From: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
  • Date: Tue, 20 Aug 2019 21:38:47 +0100
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On 20/08/2019 21:36, Andreas Kinzler wrote:
> On 20.08.2019 20:12, Andrew Cooper wrote:
>>> Xen version 4.10.2. dom0 kernel 4.13.16. The BIOS version is unchanged
>>> from 2700X (working) to 3700X (crashing).
>> So you've done a Zen v1 => Zen v2 CPU upgrade and an existing system?
>
> With "existing system" you mean the Windows installation?

I meant same computer, not same VM.

> Yes, but it is not relevant. The same BSODs happen if you boot the HVM
> with just the iso installation medium and no disks.

That's a useful datapoint.  I wouldn't expect this to be relevant, given
how Window's HAL works.

>
>>> Is it a known problem? Did someone test the new EPYCs?
>> This looks familiar, and is still somewhere on my TODO list.
>
> Do you already know the reason or is that still to investigate?
>
>> Does booting with a single vCPU work?
>
> Number of vCPUs make no difference

Hmm - perhaps its not the same issue then.  Either way, its firmly in
the "still to investigate" phase.

~Andrew

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