On 19/04/2018 10:40, Gerd Hoffmann wrote: >> So I was ready to return and suggest that maybe libvirt should probe >> the device to know about these ancillary configuration details, but >> then I remembered that both mdev vGPU vendors had external dependencies >> to even allow probing the device. KVMGT will fail to open the device >> if it's not associated with an instance of KVM and NVIDIA vGPU, I >> believe, will fail if the vGPU manager process cannot find the QEMU >> instance to extract the VM UUID. (Both of these were bad ideas) > Oops. I've trapped into the kvm issue too. Wondering what the reason > is, shouldn't this work with tcg too? As far as I understand, KVMGT requires KVM support in order to track writes to guest memory. It's a kernel API provided by the kvm.ko module, so no TCG support. Paolo
