Merge remote-tracking branch 'remotes/mst/tags/for_upstream' into staging

virtio,vhost: fixes, features, cleanups.

FLR support.
Misc fixes, cleanups.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

# gpg: Signature made Wed 04 Sep 2019 12:53:35 BST
# gpg:                using RSA key 281F0DB8D28D5469
# gpg: Good signature from "Michael S. Tsirkin <mst@kernel.org>" [full]
# gpg:                 aka "Michael S. Tsirkin <mst@redhat.com>" [full]
# Primary key fingerprint: 0270 606B 6F3C DF3D 0B17  0970 C350 3912 AFBE 8E67
#      Subkey fingerprint: 5D09 FD08 71C8 F85B 94CA  8A0D 281F 0DB8 D28D 5469

* remotes/mst/tags/for_upstream:
  libvhost-user: introduce and use vu_has_protocol_feature()
  libvhost-user: fix SLAVE_SEND_FD handling
  virtio-pci: Add Function Level Reset support
  virtio-rng: change default backend to rng-builtin
  virtio-rng: Keep the default backend out of VirtIORNGConf
  rng-builtin: add an RNG backend that uses qemu_guest_getrandom()

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

include/hw/virtio/virtio-rng.h

@@ -14,7 +14,6 @@
 
 #include "hw/virtio/virtio.h"
 #include "sysemu/rng.h"
-#include "sysemu/rng-random.h"
 #include "standard-headers/linux/virtio_rng.h"
 
 #define TYPE_VIRTIO_RNG "virtio-rng-device"
@@ -27,7 +26,6 @@ struct VirtIORNGConf {
     RngBackend *rng;
     uint64_t max_bytes;
     uint32_t period_ms;
-    RngRandom *default_backend;
 };
 
 typedef struct VirtIORNG {

include/sysemu/rng.h

@@ -24,6 +24,8 @@
 #define RNG_BACKEND_CLASS(klass) \
     OBJECT_CLASS_CHECK(RngBackendClass, (klass), TYPE_RNG_BACKEND)
 
+#define TYPE_RNG_BUILTIN "rng-builtin"
+
 typedef struct RngRequest RngRequest;
 typedef struct RngBackendClass RngBackendClass;
 typedef struct RngBackend RngBackend;