On 23.12.2020 00:04, Dylanger Daly wrote: > I think I've narrowed down what could be the issue. > > I think disabling SMT on any AMD Zen 2 CPU is breaking Xen's Credit2 > scheduler, I can only test on AMD Ryzen 4000 based Mobile CPUs, but I think > this is what is causing issues with softlocks/having to pin dom0 1 vcpu.
Dario, does this maybe ring any bells? Jan > I'm currently trying to re-enable SMT on Qubes 4.1 (Xen 4.14) and I'll report > my findings here. >