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2014-10-15qdev: Add description field in PropertyInfo structGonglei
The descriptions can serve as documentation in the code, and they can be used to provide better help. Cc: Markus Armbruster <armbru@redhat.com> Signed-off-by: Gonglei <arei.gonglei@huawei.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-10-15qdev: device_del: Search for to be unplugged device in 'peripheral' containerIgor Mammedov
device_add puts every device with 'id' inside of 'peripheral' container using id's value as the last component name. Use it by replacing recursive search on sysbus with path lookup in 'peripheral' container, which could handle both BUS and BUS-less device cases. Signed-off-by: Igor Mammedov <imammedo@redhat.com> Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-10-15qdev: HotplugHandler: Add support for unplugging BUS-less devicesIgor Mammedov
Signed-off-by: Igor Mammedov <imammedo@redhat.com> Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-10-15qdev: Drop legacy hotplug fields/methodsIgor Mammedov
It removes not needed anymore BusState::allow_hotplug field and DeviceClass::unplug callback. Signed-off-by: Igor Mammedov <imammedo@redhat.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-10-15usb: Convert usb devices to hotplug handler APIIgor Mammedov
Signed-off-by: Igor Mammedov <imammedo@redhat.com> Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-10-15usb: Convert usb-ccid to hotplug handler APIIgor Mammedov
Signed-off-by: Igor Mammedov <imammedo@redhat.com> Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-10-15usb-storage: Drop not needed "allow_hotplug = 0"Igor Mammedov
Drop useless hack that disables hotplug on bus, after backend storage was added to it, by setting "allow_hotplug = 0". Even if bus is hotpluggable, it won't be possible to add another SCSI device to bus since its realize will fail early with error "no free target" in scsi_qdev_realize() method. Signed-off-by: Igor Mammedov <imammedo@redhat.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-10-15usb-bot: Drop not needed "allow_hotplug = 0"Igor Mammedov
Drop useless hack that disables hotplug on bus by setting "allow_hotplug = 0". Even if bus is hotpluggable, It won't be possible to add another SCSI device to bus since its realization will fail early with error "no free target" in scsi_qdev_realize() method. Signed-off-by: Igor Mammedov <imammedo@redhat.com> Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-10-15usb-bot: Mark device as non hotpluggableIgor Mammedov
usb-bot creates SCSI bus and immediately makes it non hotpluggable which was making not possible to hotplug usb-bot since QEMU would abort at bus_add_child(scsi-hd) time when usb-bot is realized. Mark usb-bot as not hotpluggable so that attempt to hotplug it would error out even before it gets to device initialization point. Signed-off-by: Igor Mammedov <imammedo@redhat.com> Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-10-15scsi: Cleanup not used anymore SCSIBusInfo{hotplug, hot_unplug} fieldsIgor Mammedov
SCSI subsytem was converted to hotplug handler API and doesn't use SCSIBusInfo{hotplug, hot_unplug} fields and related callbacks anymore. Signed-off-by: Igor Mammedov <imammedo@redhat.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-10-15scsi: Convert virtio-scsi HBA to hotplug handler APIIgor Mammedov
Signed-off-by: Igor Mammedov <imammedo@redhat.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-10-15scsi: Convert pvscsi HBA to hotplug handler APIIgor Mammedov
Signed-off-by: Igor Mammedov <imammedo@redhat.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-10-15scsi: Set SCSI BUS itself as default HotplugHandlerIgor Mammedov
That would allow to handle SCSI device unplug on HBAs without dedicated hot(un)plug handlers and avoid making such HBAs explicitly hotpluggable. Signed-off-by: Igor Mammedov <imammedo@redhat.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-10-15s390x: Convert virtio-ccw to hotplug handler APIIgor Mammedov
Signed-off-by: Igor Mammedov <imammedo@redhat.com> Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-10-15s390x: Convert s390-virtio to hotplug handler APIIgor Mammedov
Beside of conversion, patch drops present unplug handling, effectively disabling hot-unplug of s390-virtio devices. Signed-off-by: Igor Mammedov <imammedo@redhat.com> Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-10-15s390x: Drop not used allow_hotplug in event-facilityIgor Mammedov
s390-sclp-event-facility creates s390-sclp-events-bus and immediately sets its allow_hotplug field to 0, which is NOP since it's already 0 by default. Also since BUS is not hotpluggable, it's not possible to call SCLP_EVENT{ DeviceClass::unplug } callback from qdev_unplug() making this unreachable code, so drop it as well. Signed-off-by: Igor Mammedov <imammedo@redhat.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-10-15virtio-mmio: Drop useless bus->allow_hotplug = 0Igor Mammedov
Bus by default is not hotpluggable. virtio-mmio-bus and its parent types do not set allow_hotplug anywhere explicitly, so remove not needed field access and wrapper along with it. Signed-off-by: Igor Mammedov <imammedo@redhat.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-10-15virtio-serial: Convert to hotplug-handler APIIgor Mammedov
Signed-off-by: Igor Mammedov <imammedo@redhat.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-10-15virtio-pci: Drop BusState::allow_hotplugIgor Mammedov
virtio-pci-bus is an internal object of composite virtio-pci device and it doesn't participate in -device/device_add hotplug flow, and since it's not required by bus_add_child() that BUS must be hotpluggable to be able to add child at runtime, it's possible to drop not needed 'allow_hotplug' field. Signed-off-by: Igor Mammedov <imammedo@redhat.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-10-15target-i386: ICC bus: Drop BusState::allow_hotplugIgor Mammedov
Since bus_add_child() no longer cares if BUS is hotpluggable or not, there is no need in setting allow_hotplug field. Signed-off-by: Igor Mammedov <imammedo@redhat.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-10-15qdev: Drop hotplug check from bus_add_child()Igor Mammedov
Check is too restrictive and does not allow to add children to just created bus during hotplug when the bus is part of composite device. Removing check from bus_add_child() doesn't affect devices creatable with device_add/del commands since they have a similar builtin check and patch will allow to create complex composite devices during hotplug. Signed-off-by: Igor Mammedov <imammedo@redhat.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-10-15qdev: Add wrapper to set BUS as HotplugHandlerIgor Mammedov
To be used for conversion of SCSI and USB devices, and would allow to make every HBA/USB host switch to HotplugHandler API without touching each controller explicitly. Signed-off-by: Igor Mammedov <imammedo@redhat.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-10-15qdev: Add simple/generic unplug callback for HotplugHandlerIgor Mammedov
It will be used in shallow conversion from legacy hotplug mechanism and eventually replace all the uses of old mechanism DeviceClass::unplug = qdev_simple_unplug_cb() Signed-off-by: Igor Mammedov <imammedo@redhat.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-10-15qdev: HotplugHandler: Provide unplug callbackIgor Mammedov
It is to be called for actual device removal and will allow to separate request and removal handling phases of x86-CPU devices and also it's a handler to be called for synchronously removable devices. Signed-off-by: Igor Mammedov <imammedo@redhat.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-10-15qdev: HotplugHandler: Rename unplug callback to unplug_requestIgor Mammedov
'HotplugHandler.unplug' callback is currently used as async call to issue unplug request for device that implements it. Renaming 'unplug' callback to 'unplug_request' should help to avoid confusion about what callback does and would allow to introduce 'unplug' callback that would perform actual device removal when guest is ready for it. Signed-off-by: Igor Mammedov <imammedo@redhat.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-10-15qdev: do not allow to instantiate non hotpluggable device with device_addIgor Mammedov
It will allow explicitly mark device as not hotpluggable and avoid its creation with following error at realize time and destroying it afterwards anyway. Instead of it will error out even before instance of device is created. Signed-off-by: Igor Mammedov <imammedo@redhat.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-10-15Access BusState::allow_hotplug using wraper qbus_is_hotpluggable()Igor Mammedov
It would allow to transparently switch detection whether Bus is hotpluggable from allow_hotplug field to hotplug_handler link and to drop allow_hotplug field once all users are converted to hotplug handler API. Signed-off-by: Igor Mammedov <imammedo@redhat.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-10-15tests: usb: usb-uas hotplug testIgor Mammedov
checks that it's possible to hotplug usb-uas HBA and then if it's possible to hot(un)plug scsi-disk to it. Thest basically covers hot(un)plug on dummy HBAs without means of hot(un)plug notification of the guest. Signed-off-by: Igor Mammedov <imammedo@redhat.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-10-15tests: usb: usb-storage hotplug testIgor Mammedov
usb-storage is different from usual usb devices in that it uses a child SCSI bus for underlying storage. This commit verifies that the SCSI bus is hotpluggable, as hotplug operation wouldn't succeed without it. Signed-off-by: Igor Mammedov <imammedo@redhat.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-10-15tests: usb: Generic usb device hotplugIgor Mammedov
use usb-tablet as a hotplugged usb device. Signed-off-by: Igor Mammedov <imammedo@redhat.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-10-15tests: usb: add port test to uhci unit testIgor Mammedov
Signed-off-by: Igor Mammedov <imammedo@redhat.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-10-15tests: usb: Move uhci port test code to libqos/usb.cIgor Mammedov
Move code necessary for testing uhci port into library so it could be used by other USB tests. Signed-off-by: Igor Mammedov <imammedo@redhat.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-10-15tests: virtio-blk: Check if hot-plug/unplug worksIgor Mammedov
Signed-off-by: Igor Mammedov <imammedo@redhat.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-10-15tests: virtio-net: Check if hot-plug/unplug worksIgor Mammedov
Signed-off-by: Igor Mammedov <imammedo@redhat.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-10-15tests: virtio-rng: Check if hot-plug/unplug worksIgor Mammedov
Signed-off-by: Igor Mammedov <imammedo@redhat.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-10-15libqos: Add qpci_plug_device_test() and qpci_unplug_acpi_device_test()Igor Mammedov
Functions will be used for testing hot(un)plug of PCI devices. Signed-off-by: Igor Mammedov <imammedo@redhat.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-10-15tests: virtio-serial: Check if hot-plug/unplug worksIgor Mammedov
Signed-off-by: Igor Mammedov <imammedo@redhat.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-10-15tests: virtio-scsi: Check if hot-plug/unplug worksIgor Mammedov
Signed-off-by: Igor Mammedov <imammedo@redhat.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-10-15qom: Add error handler for object alias propertyGonglei
object_property_add_alias() is called at some places at present. And its parameter errp may not NULL, such as object_property_add_alias(obj, "iothread", OBJECT(&dev->vdev),"iothread", &error_abort); This patch add error handler for security. Cc: Stefan Hajnoczi <stefanha@redhat.com> Cc: Michael S. Tsirkin <mst@redhat.com> Cc: Markus Armbruster <armbru@redhat.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Gonglei <arei.gonglei@huawei.com> Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-10-15qom: Add error handler for object_property_print()Gonglei
Avoid the caller of object_property_print() leaking string argument's memory, such as qdev_print_props() when encounter errors. Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Gonglei <arei.gonglei@huawei.com> Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-10-13qdev: gpio: Register GPIO outputs as QOM linksPeter Crosthwaite
Within the object that contains the GPIO output. This allows for connecting GPIO outputs via setting of a Link property. Also clear the link value to zero. This catch-alls the case where a device improperly inits a gpio_out (malloc instead of malloc0). Reviewed-by: Alexander Graf <agraf@suse.de> Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com> Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-10-13qdev: gpio: Register GPIO inputs as child objectsPeter Crosthwaite
To the device that contains them. This will allow for referencing a GPIO input from it's canonical path (exciting for dynamic machine generation!) Reviewed-by: Alexander Graf <agraf@suse.de> Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com> Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-10-13qdev: gpio: Don't allow name share between I and OPeter Crosthwaite
Only allow a GPIO name to be one or the other. Inputs and outputs are functionally different and should be in different namespaces. Prepares support for the QOMification of IRQs as Links or Child objects. The alternative is to munge names .e.g. with "-in" or "-out" suffixes when giving QOM names. But that reduces clarity and if there are cases out there where users want I and O with same name they can manually add their own suffixes. Reviewed-by: Alexander Graf <agraf@suse.de> Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com> Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-10-10Merge remote-tracking branch 'remotes/cohuck/tags/s390x-20141010' into stagingPeter Maydell
various s390x updates: - cpu state handling in qemu and migration - vhost-scsi-ccw bugfix # gpg: Signature made Fri 10 Oct 2014 14:01:34 BST using RSA key ID C6F02FAF # gpg: Can't check signature: public key not found * remotes/cohuck/tags/s390x-20141010: s390x/virtio-ccw: fix vhost-scsi intialization s390x/migration: migrate CPU state s390x/kvm: synchronize the cpu state after SIGP (INITIAL) CPU RESET s390x/kvm: reuse kvm_s390_reset_vcpu() to get rid of ifdefs s390x/kvm: propagate s390 cpu state to kvm s390x/kvm: proper use of the cpu states OPERATING and STOPPED s390x/kvm: introduce proper states for s390 cpus linux-headers: update to 3.17-rc7 Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-10-10kvm fix compilation with GCC 4.3.4Paolo Bonzini
As usual, SLES11's GCC complained about double typedefs: /home/cohuck/git/qemu/kvm-all.c:110: error: redefinition of typedef ‘KVMState’ /home/cohuck/git/qemu/include/sysemu/kvm.h:161: error: previous declaration of ‘KVMState’ was here Reported-by: Cornelia Huck <cornelia.huck@de.ibm.com> Tested-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-10-10s390x/virtio-ccw: fix vhost-scsi intializationCornelia Huck
The vhost-scsi-ccw backend is of type VHostSCSICcw, not VirtIOSCSICcw. This fixes a segfault when invoking qemu-system-s390x -device vhost-scsi-ccw,? Reviewed-by: Thomas Huth <thuth@linux.vnet.ibm.com> Tested-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2014-10-10s390x/migration: migrate CPU stateThomas Huth
This patch provides the cpu save information for dumps and later life migration and enables migration of the CPU state. The code is based on earlier work from Christian Borntraeger and Jason Herne. Signed-off-by: Thomas Huth <thuth@linux.vnet.ibm.com> Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com> [provide cpu_post_load()] Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com> CC: Andreas Faerber <afaerber@suse.de> CC: Christian Borntraeger <borntraeger@de.ibm.com> CC: Jason J. Herne <jjherne@us.ibm.com> Tested-by: Christian Borntraeger <borntraeger@de.ibm.com> [Cornelia Huck: tweaked cpu_post_load() comment] Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2014-10-10s390x/kvm: synchronize the cpu state after SIGP (INITIAL) CPU RESETDavid Hildenbrand
We need to synchronize registers after a reset has been performed. The current code does that in qemu_system_reset(), load_normal_reset() and modified_clear_reset() for all vcpus. After SIGP (INITIAL) CPU RESET, this needs to be done for the targeted vcpu as well, so let's call cpu_synchronize_post_reset() in the respective handlers. Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com> Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com> Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com> CC: Andreas Faerber <afaerber@suse.de> Tested-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2014-10-10s390x/kvm: reuse kvm_s390_reset_vcpu() to get rid of ifdefsDavid Hildenbrand
This patch reuses kvm_s390_reset_vcpu() to get rid of some CONFIG_KVM and CONFIG_USER_ONLY ifdefs in cpu.c. In order to get rid of CONFIG_USER_ONLY, kvm_s390_reset_vcpu() has to provide a dummy implementation - the two definitions are moved to the proper section in cpu.h. Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com> Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com> Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com> CC: Andreas Faerber <afaerber@suse.de> Tested-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2014-10-10s390x/kvm: propagate s390 cpu state to kvmDavid Hildenbrand
Let QEMU propagate the cpu state to kvm. If kvm doesn't yet support it, it is silently ignored as kvm will still handle the cpu state itself in that case. The state is not synced back, thus kvm won't have a chance to actively modify the cpu state. To do so, control has to be given back to QEMU (which is already done so in all relevant cases). Setting of the cpu state can fail either because kvm doesn't support the interface yet, or because the state is invalid/not supported. Failed attempts will be traced Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com> Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com> Reviewed-by: Thomas Huth <thuth@linux.vnet.ibm.com> Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com> CC: Andreas Faerber <afaerber@suse.de> Tested-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>