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Re: [Xen-devel] Windows HVM no longer boots with AMD Ryzen 3700X (and 3900X)



On 2019-09-02 18:20, Paul Durrant wrote:
-----Original Message-----
From: Steven Haigh <netwiz@xxxxxxxxx>
Sent: 02 September 2019 09:09
To: Paul Durrant <Paul.Durrant@xxxxxxxxxx>
Cc: Andreas Kinzler <hfp@xxxxxxxxx>; Andrew Cooper <Andrew.Cooper3@xxxxxxxxxx>; xen-
devel@xxxxxxxxxxxxxxxxxxxx
Subject: Re: Windows HVM no longer boots with AMD Ryzen 3700X (and 3900X)

On 2019-09-02 18:04, Paul Durrant wrote:
>> -----Original Message-----
>> Further to the above, I did some experimentation. The following is a
>> list of attempted boot configurations and their outcomes:
>>
>> viridian=1
>> vcpus=4
>> STOPCODE: HAL MEMORY ALLOCATION
>>
>> viridian=0
>> vcpus=4
>> STOPCODE: MULTIPROCESSOR_CONFIGURATION_NOT_SUPPORTED
>>
>> viridian=0
>> vcpus=1
>> Boot OK - get to Windows Server 2016 login etc
>>
>
> And to complete the set, how about viridian=1 vcpus=1?

Any vcpus value where viridian=1 is used creates a HAL MEMORY ALLOCATION
stopcode when trying to boot Windows.

Ok, so I guess that issue hits first and, only if you get beyond that
do you hit the multiprocessor problem.

The viridian option is not actually a boolean any more (that
interpretation is just for compat) so it would be a good datapoint to
know which of the enlightenments causes the change in behaviour. Could
you try viridian=['base'] to see if that's sufficient to cause the
problem? (I'm guessing it probably is but it would be good to know).


Hi Paul,

I can confirm that viridian=['base'] crashes with the same HAL MEMORY ALLOCATION stopcode - even on 1 vcpu.

--
Steven Haigh

? netwiz@xxxxxxxxx     ? http://www.crc.id.au
? +61 (3) 9001 6090    ? 0412 935 897

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