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

pc,pci,virtio: fixes, cleanups

Lots of fixes, cleanups.
CPU hot-unplug improvements.
A new AER property for virtio devices, adding a dummy AER capability.

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

# gpg: Signature made Wed 09 Dec 2020 18:04:28 GMT
# gpg:                using RSA key 5D09FD0871C8F85B94CA8A0D281F0DB8D28D5469
# gpg:                issuer "mst@redhat.com"
# 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: (65 commits)
  hw/virtio-pci Added AER capability.
  hw/virtio-pci Added counter for pcie capabilities offsets.
  pcie_aer: Fix help message of pcie_aer_inject_error command
  x86: ich9: let firmware negotiate 'CPU hot-unplug with SMI' feature
  x86: ich9: factor out "guest_cpu_hotplug_features"
  tests/acpi: update expected files
  x86: acpi: let the firmware handle pending "CPU remove" events in SMM
  tests/acpi: allow expected files change
  x86: acpi: introduce AcpiPmInfo::smi_on_cpu_unplug
  acpi: cpuhp: introduce 'firmware performs eject' status/control bits
  hw/i386/pc: add max combined fw size as machine configuration option
  block/export: avoid g_return_val_if() input validation
  contrib/vhost-user-input: avoid g_return_val_if() input validation
  contrib/vhost-user-gpu: avoid g_return_val_if() input validation
  contrib/vhost-user-blk: avoid g_return_val_if() input validation
  .gitlab-ci: add build-libvhost-user
  libvhost-user: add a simple link test without glib
  libvhost-user: make it a meson subproject
  libvhost-user: drop qemu/osdep.h dependency
  libvhost-user: remove qemu/compiler.h usage
  ...

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

1 files changed, 15 insertions, 13 deletions

diff --git a/include/hw/qdev-core.h b/include/hw/qdev-core.h
index 5e737195b5..6ac86db44e 100644
--- a/include/hw/qdev-core.h
+++ b/include/hw/qdev-core.h
@@ -81,16 +81,17 @@ typedef void (*BusUnrealize)(BusState *bus);
  * </note>
  *
  * # Hiding a device #
- * To hide a device, a DeviceListener function should_be_hidden() needs to
+ * To hide a device, a DeviceListener function hide_device() needs to
  * be registered.
- * It can be used to defer adding a device and therefore hide it from the
- * guest. The handler registering to this DeviceListener can save the QOpts
- * passed to it for re-using it later and must return that it wants the device
- * to be/remain hidden or not. When the handler function decides the device
- * shall not be hidden it will be added in qdev_device_add() and
- * realized as any other device. Otherwise qdev_device_add() will return early
- * without adding the device. The guest will not see a "hidden" device
- * until it was marked don't hide and qdev_device_add called again.
+ * It can be used to defer adding a device and therefore hide it from
+ * the guest. The handler registering to this DeviceListener can save
+ * the QOpts passed to it for re-using it later. It must return if it
+ * wants the device to be hidden or visible. When the handler function
+ * decides the device shall be visible it will be added with
+ * qdev_device_add() and realized as any other device. Otherwise
+ * qdev_device_add() will return early without adding the device. The
+ * guest will not see a "hidden" device until it was marked visible
+ * and qdev_device_add called again.
  *
  */
 struct DeviceClass {
@@ -196,11 +197,12 @@ struct DeviceListener {
     void (*realize)(DeviceListener *listener, DeviceState *dev);
     void (*unrealize)(DeviceListener *listener, DeviceState *dev);
     /*
-     * This callback is called upon init of the DeviceState and allows to
-     * inform qdev that a device should be hidden, depending on the device
-     * opts, for example, to hide a standby device.
+     * This callback is called upon init of the DeviceState and
+     * informs qdev if a device should be visible or hidden.  We can
+     * hide a failover device depending for example on the device
+     * opts.
      */
-    int (*should_be_hidden)(DeviceListener *listener, QemuOpts *device_opts);
+    bool (*hide_device)(DeviceListener *listener, QemuOpts *device_opts);
     QTAILQ_ENTRY(DeviceListener) link;
 };