Re: [Xen-devel] Status of 4.13

[Jan Beulich <jbeulich@xxxxxxxx>]

On 21.11.2019 08:36, Jürgen Groß wrote:
> On 21.11.19 08:30, Steven Haigh wrote:
>> On 2019-11-21 17:05, Jürgen Groß wrote:
>>> Where do we stand with Xen 4.13 regarding blockers and related patches?
>>>
>>> 2. Ryzen/Rome failures with Windows guests:
>>>    What is the currently planned way to address the problem? Who is
>>>    working on that?
>>
>> A workaround was found by specifying cpuid values in the Windows VM 
>> config file.
>>
>> The workaround line is:
>> cpuid = [ "0x80000008:ecx=xxxxxxxxxxxxxxxx0100xxxxxxxxxxxx" ]
>>
>> It was suggested that this be documented - but no immediate action 
>> should be taken - with a view to correct this properly in 4.14.
> 
> I'm aware of the suggestion, but not of any decision. :-)

It was my understanding that we'd cap the 4-bit value to 7 for
the time being. I think George was planning to send a patch.

Jan

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