Unfortunately there is no option like this in bios, only for cpu, and all igpu options are device iniatilization order, memory size and clockspeed. Also my cpu architecture is not on the list for iommu(amd-vi), but older apus on almost same socket (fm2 rather than fm2+) are there and I'm really...
First, thanks for taking time to write big reply
I alredy found out the problem, libvirt wast too old so I installed newer version from aur and was able to set cpu cache size.
But still, performance isn't that good. My gpu is integrated r7 graphics for vm (I got lucky that it worked, I rode that...
I'm running windows 10 in vm configured via virt-manager with gpu passthrough using this guide: https://wiki.archlinux.org/index.php/PCI_passthrough_via_OVMF#Plain_QEMU_without_libvirt and my host distro is arch.
Everything works fine, cpu and gpu performance in benchmarks is very good, but in...
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