Linux 4.11.9-1-ARCH
QEMU emulator version 2.9.0
Vagrant 1.9.7
libvirtd (libvirt) 3.5.0
vagrant-libvirt (0.0.40)

> lsmod | grep kvm
kvm_intel             192512  0
kvm                   528384  1 kvm_intel
irqbypass              16384  1 kvm

> lsmod | grep virtio
9pnet_virtio           20480  0
virtio_ring            20480  1 9pnet_virtio
9pnet                  73728  1 9pnet_virtio
virtio                 16384  1 9pnet_virtio

# Vagrantfile:

Vagrant.configure("2") do |config|
  config.vm.box = "MarkZaslavskiy/jessie64_with_kernel_headers"
  config.ssh.username = "vagrant"
  config.ssh.password = "vagrant"
end

> vagrant up --provider libvirt

Bringing machine 'default' up with 'libvirt' provider...
==> default: Creating image (snapshot of base box volume).
==> default: Creating domain with the following settings...
==> default:  -- Name:              virtual_default
==> default:  -- Domain type:       kvm
==> default:  -- Cpus:              1
==> default:  -- Feature:           acpi
==> default:  -- Feature:           apic
==> default:  -- Feature:           pae
==> default:  -- Memory:            512M
==> default:  -- Management MAC:
==> default:  -- Loader:
==> default:  -- Base box:          MarkZaslavskiy/jessie64_with_kernel_headers
==> default:  -- Storage pool:      default
==> default:  -- Image:             /var/lib/libvirt/images/virtual_default.img (11G)
==> default:  -- Volume Cache:      default
==> default:  -- Kernel:
==> default:  -- Initrd:
==> default:  -- Graphics Type:     vnc
==> default:  -- Graphics Port:     5900
==> default:  -- Graphics IP:       127.0.0.1
==> default:  -- Graphics Password: Not defined
==> default:  -- Video Type:        cirrus
==> default:  -- Video VRAM:        9216
==> default:  -- Sound Type:
==> default:  -- Keymap:            en-us
==> default:  -- TPM Path:
==> default:  -- INPUT:             type=mouse, bus=ps2
==> default: ================
==> default: Machine id: 297f6407-3009-4901-bcac-c744818f7334
==> default: Should be mounting folders
==> default:  /vagrant, opts: {:guestpath=>"/vagrant", :hostpath=>"/home/krikun/virtual", :disabled=>false, :__vagrantfile=>true, :target=>"/vagrant", :accessmode=>"passthrough", :mount=>true, :readonly=>nil, :mount_tag=>"4af4c62dae52788939fb5635961ccbf"}
==> default: Creating shared folders metadata...
==> default: Starting domain.
There was an error talking to Libvirt. The error message is shown
below:

Call to virDomainCreateWithFlags failed: internal error: process exited while connecting to monitor: 2017-07-24T14:41:46.454460Z qemu-system-x86_64: -chardev pty,id=charserial0: char device redirected to /dev/pts/3 (label charserial0)
2017-07-24T14:41:46.477103Z qemu-system-x86_64: -device virtio-9p-pci,id=fs0,fsdev=fsdev-fs0,mount_tag=4af4c62dae52788939fb5635961ccbf,bus=pci.0,addr=0x5: 9pfs Failed to initialize fs-driver with id:fsdev-fs0 and export path:/home/krikun/virtual