Qemu thunderbolt ausio device freezes on windows guest

Hi, I have *Ubuntu 20.04* hosted on *HP elite book G8 (i7 1185G7)* and *Windows 10 guest* through kvm. I need to connect a *Thunderbolt audio device (Presonus Quantum)* to windows. I did it using a virtual machine manager (found an audio device using lspci and added it to the machine in VM manager)

Why are physically contiguous memory allocations failing in Guest OS?

Hello, I'm running a Windows 10 guest on kvm64 CPU. I'm experimenting with authoring a kernel driver within the guest that's calling MmAllocateContiguousMemory(), which (as is fairly obvious from the name) is allocating page-locked physically contiguous memory. I'm seeing that these allocations s