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

[Andreas Kinzler <hfp@xxxxxxxxx>]

On 23.09.2019 10:17, Jan Beulich wrote:
> > > Does booting with a single vCPU work?
> > Number of vCPUs make no difference
> Well, according to Steven it does, with viridian=0. Could you
> re-check this?
I can confirm that viridian=0 AND vcpus=1 makes the system bootable 
(with long delay though)
> at least the viridian=0 case? As to Linux, did you check that PVH
> (or HVM, which you don't mention) guests actually start all their vCPU-s
> successfully?
I just tried PVH and HVM with 8 vcpus. Everything works, tested with 
make -j9 on a kernel tree.
> 8-core chip, I wonder whether
> 
https://lists.xenproject.org/archives/html/xen-devel/2019-09/msg01954.html
> still affects this configuration as well. Could you give this a try in

Does it still make sense to try the patch given the cpuid I posted?
Also I have an AMD 7302P in my lab (cpuid dump attached). No change in 
behavior from 3700X - cpuid is nearly the same.
Regards Andreas

Attachment: cpuid-amd7302p.tar.xz
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