[pve-devel] [PATCH-SERIES v3 qemu-server/manager/common] add and set x86-64-v2 as default model for new vms and detect best cpumodel

Fiona Ebner f.ebner at proxmox.com
Thu Jun 1 18:00:26 CEST 2023

Am 01.06.23 um 14:02 schrieb Eneko Lacunza:
> Hi,
> We have Ryzen 1700, 2600X, 3700 and 5950X machines here, I can test on
> them if that helps (please detail tests to perform).
> Thanks

thank you for the offer. It would be interesting to see if you have any
issues with the following:

> qm set <ID> -args '-cpu kvm64,enforce,+kvm_pv_eoi,+kvm_pv_unhalt,+sep,+lahf_lm,+popcnt,+sse4.1,+sse4.2,+ssse3'

If you like you can also test

> qm set <ID> -args '-cpu Nehalem,enforce,+aes,-svm,-vmx,+kvm_pv_eoi,+kvm_pv_unhalt,vendor="GenuineIntel"'

After testing use

> qm set <ID> --delete args

to get rid of the modification again.

Make sure to stop/start the VM fresh after each modification.

As for what to test, installing Debian 11 would be nice just for
comparison, but other than that, just do what you like, shouldn't really
matter too much :)

Best Regards,

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