Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost

Pull virtio fixes from Michael Tsirkin:
 "Just a bunch of fixes, mostly trivial ones in tools/virtio"

* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost:
  vhost/vsock: improve RCU read sections around vhost_vsock_get()
  tools/virtio: add device, device_driver stubs
  tools/virtio: fix up oot build
  virtio_features: make it self-contained
  tools/virtio: switch to kernel's virtio_config.h
  tools/virtio: stub might_sleep and synchronize_rcu
  tools/virtio: add struct cpumask to cpumask.h
  tools/virtio: pass KCFLAGS to module build
  tools/virtio: add ucopysize.h stub
  tools/virtio: add dev_WARN_ONCE and is_vmalloc_addr stubs
  tools/virtio: stub DMA mapping functions
  tools/virtio: add struct module forward declaration
  tools/virtio: use kernel's virtio.h
  virtio: make it self-contained
  tools/virtio: fix up compiler.h stub