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

pc,pci,virtio,hotplug fixes, enhancements

numa work by Hu Tao and others
memory hotplug by Igor
vhost-user by Nikolay, Antonios and others
guest virtio announcements by Jason
qtest fixes by Sergey
qdev hotplug fixes by Paolo
misc other fixes mostly by myself

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

* remotes/mst/tags/for_upstream: (109 commits)
  numa: use RAM_ADDR_FMT with ram_addr_t
  qapi/string-output-visitor: fix bugs
  tests: simplify code
  qapi: fix input visitor bugs
  acpi: rephrase comment
  qmp: add ACPI_DEVICE_OST event handling
  qmp: add query-acpi-ospm-status command
  acpi: implement ospm_status() method for PIIX4/ICH9_LPC devices
  acpi: introduce TYPE_ACPI_DEVICE_IF interface
  qmp: add query-memory-devices command
  numa: handle mmaped memory allocation failure correctly
  pc: acpi: do not hardcode preprocessor
  qmp: clean out whitespace
  qdev: recursively unrealize devices when unrealizing bus
  qdev: reorganize error reporting in bus_set_realized
  qapi: fix build on glib < 2.28
  qapi: make string output visitor parse int list
  qapi: make string input visitor parse int list
  tests: fix memory leak in test of string input visitor
  hmp: add info memdev
  ...

Conflicts:
	include/hw/i386/pc.h
[PMM: fixed minor conflict in pc.h]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

3 files changed, 65 insertions, 3 deletions

diff --git a/include/hw/virtio/vhost-backend.h b/include/hw/virtio/vhost-backend.h
new file mode 100644
index 0000000000..d31768a1d4
--- /dev/null
+++ b/include/hw/virtio/vhost-backend.h
@@ -0,0 +1,38 @@
+/*
+ * vhost-backend
+ *
+ * Copyright (c) 2013 Virtual Open Systems Sarl.
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ *
+ */
+
+#ifndef VHOST_BACKEND_H_
+#define VHOST_BACKEND_H_
+
+typedef enum VhostBackendType {
+    VHOST_BACKEND_TYPE_NONE = 0,
+    VHOST_BACKEND_TYPE_KERNEL = 1,
+    VHOST_BACKEND_TYPE_USER = 2,
+    VHOST_BACKEND_TYPE_MAX = 3,
+} VhostBackendType;
+
+struct vhost_dev;
+
+typedef int (*vhost_call)(struct vhost_dev *dev, unsigned long int request,
+             void *arg);
+typedef int (*vhost_backend_init)(struct vhost_dev *dev, void *opaque);
+typedef int (*vhost_backend_cleanup)(struct vhost_dev *dev);
+
+typedef struct VhostOps {
+    VhostBackendType backend_type;
+    vhost_call vhost_call;
+    vhost_backend_init vhost_backend_init;
+    vhost_backend_cleanup vhost_backend_cleanup;
+} VhostOps;
+
+int vhost_set_backend_type(struct vhost_dev *dev,
+                           VhostBackendType backend_type);
+
+#endif /* VHOST_BACKEND_H_ */
diff --git a/include/hw/virtio/vhost.h b/include/hw/virtio/vhost.h
index de24746c7e..33028ec8c2 100644
--- a/include/hw/virtio/vhost.h
+++ b/include/hw/virtio/vhost.h
@@ -2,6 +2,7 @@
 #define VHOST_H
 
 #include "hw/hw.h"
+#include "hw/virtio/vhost-backend.h"
 #include "hw/virtio/virtio.h"
 #include "exec/memory.h"
 
@@ -25,11 +26,11 @@ typedef unsigned long vhost_log_chunk_t;
 #define VHOST_LOG_PAGE 0x1000
 #define VHOST_LOG_BITS (8 * sizeof(vhost_log_chunk_t))
 #define VHOST_LOG_CHUNK (VHOST_LOG_PAGE * VHOST_LOG_BITS)
+#define VHOST_INVALID_FEATURE_BIT   (0xff)
 
 struct vhost_memory;
 struct vhost_dev {
     MemoryListener memory_listener;
-    int control;
     struct vhost_memory *mem;
     int n_mem_sections;
     MemoryRegionSection *mem_sections;
@@ -48,10 +49,12 @@ struct vhost_dev {
     bool memory_changed;
     hwaddr mem_changed_start_addr;
     hwaddr mem_changed_end_addr;
+    const VhostOps *vhost_ops;
+    void *opaque;
 };
 
-int vhost_dev_init(struct vhost_dev *hdev, int devfd, const char *devpath,
-                   bool force);
+int vhost_dev_init(struct vhost_dev *hdev, void *opaque,
+                   VhostBackendType backend_type, bool force);
 void vhost_dev_cleanup(struct vhost_dev *hdev);
 bool vhost_dev_query(struct vhost_dev *hdev, VirtIODevice *vdev);
 int vhost_dev_start(struct vhost_dev *hdev, VirtIODevice *vdev);
@@ -68,4 +71,8 @@ bool vhost_virtqueue_pending(struct vhost_dev *hdev, int n);
  */
 void vhost_virtqueue_mask(struct vhost_dev *hdev, VirtIODevice *vdev, int n,
                           bool mask);
+unsigned vhost_get_features(struct vhost_dev *hdev, const int *feature_bits,
+        unsigned features);
+void vhost_ack_features(struct vhost_dev *hdev, const int *feature_bits,
+        unsigned features);
 #endif
diff --git a/include/hw/virtio/virtio-net.h b/include/hw/virtio/virtio-net.h
index 4b32440837..f7fccc08a4 100644
--- a/include/hw/virtio/virtio-net.h
+++ b/include/hw/virtio/virtio-net.h
@@ -49,12 +49,14 @@
 #define VIRTIO_NET_F_CTRL_RX    18      /* Control channel RX mode support */
 #define VIRTIO_NET_F_CTRL_VLAN  19      /* Control channel VLAN filtering */
 #define VIRTIO_NET_F_CTRL_RX_EXTRA 20   /* Extra RX mode control support */
+#define VIRTIO_NET_F_GUEST_ANNOUNCE 21  /* Guest can announce itself */
 #define VIRTIO_NET_F_MQ         22      /* Device supports Receive Flow
                                          * Steering */
 
 #define VIRTIO_NET_F_CTRL_MAC_ADDR   23 /* Set MAC address */
 
 #define VIRTIO_NET_S_LINK_UP    1       /* Link is up */
+#define VIRTIO_NET_S_ANNOUNCE   2       /* Announcement is needed */
 
 #define TX_TIMER_INTERVAL 150000 /* 150 us */
 
@@ -193,6 +195,8 @@ typedef struct VirtIONet {
     char *netclient_name;
     char *netclient_type;
     uint64_t curr_guest_offloads;
+    QEMUTimer *announce_timer;
+    int announce_counter;
 } VirtIONet;
 
 #define VIRTIO_NET_CTRL_MAC    1
@@ -213,6 +217,18 @@ typedef struct VirtIONet {
  #define VIRTIO_NET_CTRL_VLAN_DEL             1
 
 /*
+ * Control link announce acknowledgement
+ *
+ * VIRTIO_NET_S_ANNOUNCE bit in the status field requests link announcement from
+ * guest driver. The driver is notified by config space change interrupt.  The
+ * command VIRTIO_NET_CTRL_ANNOUNCE_ACK is used to indicate that the driver has
+ * received the notification. It makes the device clear the bit
+ * VIRTIO_NET_S_ANNOUNCE in the status field.
+ */
+#define VIRTIO_NET_CTRL_ANNOUNCE       3
+ #define VIRTIO_NET_CTRL_ANNOUNCE_ACK         0
+
+/*
  * Control Multiqueue
  *
  * The command VIRTIO_NET_CTRL_MQ_VQ_PAIRS_SET
@@ -251,6 +267,7 @@ struct virtio_net_ctrl_mq {
         DEFINE_PROP_BIT("guest_tso6", _state, _field, VIRTIO_NET_F_GUEST_TSO6, true), \
         DEFINE_PROP_BIT("guest_ecn", _state, _field, VIRTIO_NET_F_GUEST_ECN, true), \
         DEFINE_PROP_BIT("guest_ufo", _state, _field, VIRTIO_NET_F_GUEST_UFO, true), \
+        DEFINE_PROP_BIT("guest_announce", _state, _field, VIRTIO_NET_F_GUEST_ANNOUNCE, true), \
         DEFINE_PROP_BIT("host_tso4", _state, _field, VIRTIO_NET_F_HOST_TSO4, true), \
         DEFINE_PROP_BIT("host_tso6", _state, _field, VIRTIO_NET_F_HOST_TSO6, true), \
         DEFINE_PROP_BIT("host_ecn", _state, _field, VIRTIO_NET_F_HOST_ECN, true), \