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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
'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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
- cpu state handling in qemu and migration
- vhost-scsi-ccw bugfix
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Merge remote-tracking branch 'remotes/cohuck/tags/s390x-20141010' into staging
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>
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>
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>
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>
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>
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>
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>
This patch makes sure that halting a cpu and stopping a cpu are two different
things. Stopping a cpu will also set the cpu halted - this is needed for common
infrastructure to work (note that the stop and stopped flag cannot be used for
our purpose because they are already used by other mechanisms).
A cpu can be halted ("waiting") when it is operating. If interrupts are
disabled, this is called a "disabled wait", as it can't be woken up anymore. A
stopped cpu is treated like a "disabled wait" cpu, but in order to prepare for a
proper cpu state synchronization with the kvm part, we need to track the real
logical state of a cpu.
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>
Reviewed-by: Christian Borntraeger <borntraeger@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>
Until now, when a s390 cpu was stopped or halted, the number of running
CPUs was tracked in a global variable. This was problematic for migration,
so Jason came up with a per-cpu running state.
As it turns out, we want to track the full logical state of a target vcpu,
so we need real s390 cpu states.
This patch is based on an initial patch by Jason Herne, but was heavily
rewritten when adding the cpu states STOPPED and OPERATING. On the way we
move add_del_running to cpu.c (the declaration is already in cpu.h) and
modify the users where appropriate.
Please note that the cpu is still set to be stopped when it is
halted, which is wrong. This will be fixed in the next patch. The LOAD and
CHECK-STOP state will not be used in the first step.
Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
[folded Jason's patch into David's patch to avoid add/remove same lines]
Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com>
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@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>
the QOMification of accelerators, a fix for -kernel support on x86, and one
for a recently-introduced virtio-scsi optimization.
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Merge remote-tracking branch 'remotes/bonzini/tags/for-upstream' into staging
Four changes here. Polling for reconnection of character devices,
the QOMification of accelerators, a fix for -kernel support on x86, and one
for a recently-introduced virtio-scsi optimization.
# gpg: Signature made Thu 09 Oct 2014 14:36:50 BST using RSA key ID 4E6B09D7
# gpg: Good signature from "Paolo Bonzini <pbonzini@redhat.com>"
# gpg: aka "Paolo Bonzini <bonzini@gnu.org>"
* remotes/bonzini/tags/for-upstream: (28 commits)
qemu-char: Fix reconnect socket error reporting
qemu-sockets: Add error to non-blocking connect handler
qemu-error: Add error_vreport()
virtio-scsi: fix use-after-free of VirtIOSCSIReq
linuxboot: compute initrd loading address
kvm: Make KVMState be the TYPE_KVM_ACCEL instance struct
accel: Create accel object when initializing machine
accel: Pass MachineState object to accel init functions
accel: Rename 'init' method to 'init_machine'
accel: Move accel init/allowed code to separate function
accel: Remove tcg_available() function
accel: Move qtest accel registration to qtest.c
accel: Move Xen registration code to xen-common.c
accel: Move KVM accel registration to kvm-all.c
accel: Report unknown accelerator as "not found" instead of "does not exist"
accel: Make AccelClass.available() optional
accel: Use QOM classes for accel types
accel: Move accel name lookup to separate function
accel: Simplify configure_accelerator() using AccelType *acc variable
accel: Create AccelType typedef
...
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
