Ok so I got myself a hardware upgrade and wanted to give vfio another shot.
The hardware:
Mainboard: MSI Z170A Gaming M7
CPU: Intel Core i5 6600K
Graphics: Gigabyte Geforce GTX 960
Host OS is Arch Linux, currently with unpatched standard kernel. The Z170
chipset doesn't officially support VT-d
As of recently without any change to libvirt config it started
misbehaving. If i use cpu pinning ( in xml) i cant start VM any
more. Error:
> Unable to write to
> '/sys/fs/cgroup/cpuset/machine.slice/machine-qemu\x2dwin.scope/vcpu0/cpuset.cpus':
> Permission denied
Permissions on relevant dir:
> %
