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2017-06-13migration: Move remaining exported functions to migration/misc.hJuan Quintela1-1/+1
Signed-off-by: Juan Quintela <quintela@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: Peter Xu <peterx@redhat.com>
2017-05-17qdev: Replace cannot_instantiate_with_device_add_yet with !user_creatableEduardo Habkost1-3/+3
cannot_instantiate_with_device_add_yet was introduced by commit efec3dd631d94160288392721a5f9c39e50fb2bc to replace no_user. It was supposed to be a temporary measure. When it was introduced, we had 54 cannot_instantiate_with_device_add_yet=true lines in the code. Today (3 years later) this number has not shrunk: we now have 57 cannot_instantiate_with_device_add_yet=true lines. I think it is safe to say it is not a temporary measure, and we won't see the flag go away soon. Instead of a long field name that misleads people to believe it is temporary, replace it a shorter and less misleading field: user_creatable. Except for code comments, changes were generated using the following Coccinelle patch: @@ expression DC; @@ ( -DC->cannot_instantiate_with_device_add_yet = false; +DC->user_creatable = true; | -DC->cannot_instantiate_with_device_add_yet = true; +DC->user_creatable = false; ) @@ typedef ObjectClass; expression dc; identifier class, data; @@ static void device_class_init(ObjectClass *class, void *data) { ... dc->hotpluggable = true; +dc->user_creatable = true; ... } @@ @@ struct DeviceClass { ... -bool cannot_instantiate_with_device_add_yet; +bool user_creatable; ... } @@ expression DC; @@ ( -!DC->cannot_instantiate_with_device_add_yet +DC->user_creatable | -DC->cannot_instantiate_with_device_add_yet +!DC->user_creatable ) Cc: Alistair Francis <alistair.francis@xilinx.com> Cc: Laszlo Ersek <lersek@redhat.com> Cc: Marcel Apfelbaum <marcel@redhat.com> Cc: Markus Armbruster <armbru@redhat.com> Cc: Peter Maydell <peter.maydell@linaro.org> Cc: Thomas Huth <thuth@redhat.com> Acked-by: Alistair Francis <alistair.francis@xilinx.com> Reviewed-by: Thomas Huth <thuth@redhat.com> Reviewed-by: Marcel Apfelbaum <marcel@redhat.com> Acked-by: Marcel Apfelbaum <marcel@redhat.com> Signed-off-by: Eduardo Habkost <ehabkost@redhat.com> Message-Id: <20170503203604.31462-2-ehabkost@redhat.com> [ehabkost: kept "TODO remove once we're there" comment] Reviewed-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
2017-04-21migration: Disable hotplug/unplug during migrationJuan Quintela1-0/+11
Until we have reviewed what can/can't be hotplugged during migration, disable it. We can enable it later for the things that we know that work. For instance, memory hotplug during postcopy doesn't work currently. Signed-off-by: Juan Quintela <quintela@redhat.com> Reviewed-by: zhanghailiang <zhang.zhanghailiang@huawei.com> -- - Fix typo. Thanks Thomas. - Delay migration check after we have checked that we can hotplug that device. - more typos
2017-04-21qdev: Move qdev_unplug() to qdev-monitor.cJuan Quintela1-0/+34
It is not used by linux-user, otherwise I need to to create one stub for migration_is_idle() on following patch. Signed-off-by: Juan Quintela <quintela@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: zhanghailiang <zhang.zhanghailiang@huawei.com> Reviewed-by: Markus Armbruster <armbru@redhat.com>
2017-02-28migrate: Introduce a 'dc->vmsd' check to avoid segfault for --only-migratableAshijeet Acharya1-9/+0
Commit a3a3d8c7 introduced a segfault bug while checking for 'dc->vmsd->unmigratable' which caused QEMU to crash when trying to add devices which do no set their 'dc->vmsd' yet while initialization. Place a 'dc->vmsd' check prior to it so that we do not segfault for such devices. NOTE: This doesn't compromise the functioning of --only-migratable option as all the unmigratable devices do set their 'dc->vmsd'. Introduce a new function check_migratable() and move the only_migratable check inside it, also use stubs to avoid user-mode qemu build failures. Signed-off-by: Ashijeet Acharya <ashijeetacharya@gmail.com> Message-Id: <1487009088-23891-1-git-send-email-ashijeetacharya@gmail.com> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
2017-01-27Introduce DEVICE_CATEGORY_CPU for CPU devicesThomas Huth1-0/+1
Now that CPUs show up in the help text of "-device ?", we should group them into an appropriate category. Signed-off-by: Thomas Huth <thuth@redhat.com> Reviewed-by: Eduardo Habkost <ehabkost@redhat.com> Message-Id: <1484917276-7107-1-git-send-email-thuth@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2017-01-24migration: Allow "device add" options to only add migratable devicesAshijeet Acharya1-0/+9
Introduce checks for the unmigratable flag in the VMStateDescription structs of respective devices when user attempts to add them. If the "--only-migratable" was specified, all unmigratable devices will rightly fail to add. This feature is made compatible for both "-device" and "-usbdevice" command line options and covers their hmp and qmp counterparts as well. Signed-off-by: Ashijeet Acharya <ashijeetacharya@gmail.com> Message-Id: <1484566314-3987-4-git-send-email-ashijeetacharya@gmail.com> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
2016-11-22qdev: add function qdev_set_id()Juergen Gross1-16/+20
In order to have an easy way to add a new qdev with a specific id carve out the needed functionality from qdev_device_add() into a new function qdev_set_id(). Signed-off-by: Juergen Gross <jgross@suse.com> Reviewed-by: Stefano Stabellini <sstabellini@kernel.org> Signed-off-by: Stefano Stabellini <sstabellini@kernel.org>
2016-09-23qdev-monitor: Add blk_by_qdev_id()Kevin Wolf1-0/+18
This finds the BlockBackend attached to the device model identified by its qdev ID. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com>
2016-09-23qdev-monitor: Factor out find_device_state()Kevin Wolf1-4/+12
Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com>
2016-03-22util: move declarations out of qemu-common.hVeronia Bahaa1-0/+1
Move declarations out of qemu-common.h for functions declared in utils/ files: e.g. include/qemu/path.h for utils/path.c. Move inline functions out of qemu-common.h and into new files (e.g. include/qemu/bcd.h) Signed-off-by: Veronia Bahaa <veroniabahaa@gmail.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-03-16qdev-monitor: add missing aliases for virtio device classesSascha Silbe1-0/+19
virtio-{blk,balloon,net,serial} are aliases for their actual, architecture-dependent implementations (*-ccw on s390x, *-pci on other architectures supporting virtio). This makes it a lot easier to craft qemu invocations that work on all supported architectures. Complete the set to cover all existing non-abstract virtio device classes. For virtio-balloon, only the CCW implementation was missing. Signed-off-by: Sascha Silbe <silbe@linux.vnet.ibm.com> Message-Id: <1455831854-49013-4-git-send-email-silbe@linux.vnet.ibm.com> Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
2016-03-16qdev-monitor: sort alias table by typenameSascha Silbe1-7/+8
Sort the alias table by typename so it's easier to see which aliases exist. Signed-off-by: Sascha Silbe <silbe@linux.vnet.ibm.com> Message-Id: <1455831854-49013-3-git-send-email-silbe@linux.vnet.ibm.com> Reviewed-by: Halil Pasic <pasic@linux.vnet.ibm.com> Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
2016-03-16qdev-monitor: improve error message when alias device is unavailableSascha Silbe1-1/+7
When trying to instantiate an alias that points to a device class that doesn't exist, the error message looks like qemu misunderstood the request: $ s390x-softmmu/qemu-system-s390x -device virtio-gpu qemu-system-s390x: -device virtio-gpu: 'virtio-gpu-ccw' is not a valid device model name Special-case the error message to make it explicit that alias expansion is going on: $ s390x-softmmu/qemu-system-s390x -device virtio-gpu qemu-system-s390x: -device virtio-gpu: 'virtio-gpu' (alias 'virtio-gpu-ccw') is not a valid device model name Suggested-By: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Sascha Silbe <silbe@linux.vnet.ibm.com> Message-Id: <1455831854-49013-2-git-send-email-silbe@linux.vnet.ibm.com> Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
2016-02-04all: Clean up includesPeter Maydell1-0/+1
Clean up includes so that osdep.h is included first and headers which it implies are not included manually. This commit was created with scripts/clean-includes. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Message-id: 1454089805-5470-16-git-send-email-peter.maydell@linaro.org
2016-01-13error: Use error_report_err() instead of ad hoc printsMarkus Armbruster1-2/+1
Unlike ad hoc prints, error_report_err() uses the error whole instead of just its message obtained with error_get_pretty(). This avoids suppressing its hint (see commit 50b7b00). Example: $ bld/ivshmem-server -l 42@ Parameter 'shm_size' expects a size You may use k, M, G or T suffixes for kilobytes, megabytes, gigabytes and terabytes. The last line is new with this patch. While there, drop a "cannot parse shm size: " message prefix; it's redundant, because the error message proper is always of the form "Parameter 'shm_size' expects ...". Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-Id: <1450452927-8346-5-git-send-email-armbru@redhat.com>
2016-01-13error: Don't append a newline when printing the error hintMarkus Armbruster1-0/+2
Since commit 50b7b00, we have error_append_hint() to conveniently accumulate Error member @hint. error_report_err() prints it with a newline appended. Consequently, users of error_append_hint() need to know whether theirs is the final line of the hint to decide whether it needs a newline. Not a nice interface. Change error_report_err() to print just the hint, and the (still few) users of error_append_hint() to add the required newline. Cc: Eric Blake <eblake@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-Id: <1450370121-5768-7-git-send-email-armbru@redhat.com>
2015-10-12Merge remote-tracking branch 'remotes/jasowang/tags/net-pull-request' into ↵Peter Maydell1-0/+1
staging # gpg: Signature made Mon 12 Oct 2015 08:56:47 BST using RSA key ID 398D6211 # gpg: Good signature from "Jason Wang (Jason Wang on RedHat) <jasowang@redhat.com>" # gpg: WARNING: This key is not certified with sufficiently trusted signatures! # gpg: It is not certain that the signature belongs to the owner. # Primary key fingerprint: 215D 46F4 8246 689E C77F 3562 EF04 965B 398D 6211 * remotes/jasowang/tags/net-pull-request: tests: add test cases for netfilter object netfilter: add a netbuffer filter net/queue: export qemu_net_queue_append_iov netfilter: print filter info associate with the netdev netfilter: add an API to pass the packet to next filter net/queue: introduce NetQueueDeliverFunc net: merge qemu_deliver_packet and qemu_deliver_packet_iov netfilter: hook packets before net queue send init/cleanup of netfilter object vl.c: init delayed object after net_init_clients vmxnet3: Add support for VMXNET3_CMD_GET_ADAPTIVE_RING_INFO command e1000: use alias for default model vmxnet3: Support reading IMR registers on bar0 net/vmxnet3: Refine l2 header validation Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2015-10-12e1000: use alias for default modelJason Wang1-0/+1
Instead of duplicating the "e1000-82540em" device model as "e1000", make the latter an alias for the former. Cc: Markus Armbruster <armbru@redhat.com> Signed-off-by: Jason Wang <jasowang@redhat.com Reviewed-by: Markus Armbruster <armbru@redhat.com>
2015-10-09Revert "qdev: Use qdev_get_device_class() for -device <type>,help"Markus Armbruster1-3/+6
This reverts commit 31bed5509dfcbdfc293154ce81086a4dbd7a80b6. The reverted commit changed qdev_device_help() to reject abstract devices and devices that have cannot_instantiate_with_device_add_yet set, to fix crash bugs like -device x86_64-cpu,help. Rejecting abstract devices makes sense: they're purely internal, and the implementation of the help feature can't cope with them. Rejecting non-pluggable devices makes less sense: even though you can't use them with -device, the help may still be useful elsewhere, for instance with -global. This is a regression: -device FOO,help used to help even for FOO that aren't pluggable. The previous two commits fixed the crash bug at a lower layer, so reverting this one is now safe. Fixes the -device FOO,help regression, except for the broken devices marked cannot_even_create_with_object_new_yet. For those, the error message is improved. Example of a device where the regression is fixed: $ qemu-system-x86_64 -device PIIX4_PM,help PIIX4_PM.command_serr_enable=bool (on/off) PIIX4_PM.multifunction=bool (on/off) PIIX4_PM.rombar=uint32 PIIX4_PM.romfile=str PIIX4_PM.addr=int32 (Slot and optional function number, example: 06.0 or 06) PIIX4_PM.memory-hotplug-support=bool PIIX4_PM.acpi-pci-hotplug-with-bridge-support=bool PIIX4_PM.s4_val=uint8 PIIX4_PM.disable_s4=uint8 PIIX4_PM.disable_s3=uint8 PIIX4_PM.smb_io_base=uint32 Example of a device where it isn't fixed: $ qemu-system-x86_64 -device host-x86_64-cpu,help Can't list properties of device 'host-x86_64-cpu' Both failed with "Parameter 'driver' expects pluggable device type" before. Cc: qemu-stable@nongnu.org Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Eduardo Habkost <ehabkost@redhat.com> Message-Id: <1443689999-12182-11-git-send-email-armbru@redhat.com>
2015-09-22monitor: allow device_del to accept QOM pathsDaniel P. Berrange1-5/+15
Currently device_del requires that the client provide the device short ID. device_add allows devices to be created without giving an ID, at which point there is no way to delete them with device_del. The QOM object path, however, provides an alternative way to identify the devices. Allowing device_del to accept an object path ensures all devices are deletable regardless of whether they have an ID. (qemu) device_add usb-mouse (qemu) qom-list /machine/peripheral-anon device[0] (child<usb-mouse>) type (string) (qemu) device_del /machine/peripheral-anon/device[0] Devices are required to be marked as hotpluggable otherwise an error is raised (qemu) device_del /machine/unattached/device[4] Device 'PIIX3' does not support hotplugging Signed-off-by: Daniel P. Berrange <berrange@redhat.com> Message-Id: <1441974836-17476-1-git-send-email-berrange@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> [Commit message touched up, accidental white-space change dropped] Signed-off-by: Markus Armbruster <armbru@redhat.com>
2015-09-18hmp: Allow for error message hints on HMPEric Blake1-28/+14
Commits 7216ae3d and d2828429 disabled some error message hints, all because a change to use modern error reporting meant that the hint would be output prior to the actual error. Fix this by making hints a first-class member of Error. For example, we are now back to the pleasant: $ qemu-system-x86_64 --nodefaults -S --vnc :0 --chardev null,id=, qemu-system-x86_64: --chardev null,id=,: Parameter 'id' expects an identifier Identifiers consist of letters, digits, '-', '.', '_', starting with a letter. Signed-off-by: Eric Blake <eblake@redhat.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Message-Id: <1441901956-21991-1-git-send-email-eblake@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
2015-06-22Include qapi/qmp/qerror.h exactly where neededMarkus Armbruster1-0/+1
In particular, don't include it into headers. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Luiz Capitulino <lcapitulino@redhat.com>
2015-06-22qerror: Move #include out of qerror.hMarkus Armbruster1-0/+1
Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Luiz Capitulino <lcapitulino@redhat.com>
2015-06-22qmp: Wean off qerror_report()Markus Armbruster1-9/+6
The traditional QMP command handler interface int qmp_FOO(Monitor *mon, const QDict *params, QObject **ret_data); doesn't provide for returning an Error object. Instead, the handler is expected to stash it in the monitor with qerror_report(). When we rebased QMP on top of QAPI, we didn't change this interface. Instead, commit 776574d introduced "middle mode" as a temporary aid for converting existing QMP commands to QAPI one by one. More than three years later, we're still using it. Middle mode has two effects: * Instead of the native input marshallers static void qmp_marshal_input_FOO(QDict *, QObject **, Error **) it generates input marshallers conforming to the traditional QMP command handler interface. * It suppresses generation of code to register them with qmp_register_command() This permits giving them internal linkage. As long as we need qmp-commands.hx, we can't use the registry behind qmp_register_command(), so the latter has to stay for now. The former has to go to get rid of qerror_report(). Changing all QMP commands to fit the QAPI mold in one go was impractical back when we started, but by now there are just a few stragglers left: do_qmp_capabilities(), qmp_qom_set(), qmp_qom_get(), qmp_object_add(), qmp_netdev_add(), do_device_add(). Switch middle mode to generate native input marshallers, and adapt the stragglers. Simplifies both the monitor code and the stragglers. Rename do_qmp_capabilities() to qmp_capabilities(), and do_device_add() to qmp_device_add, because that's how QMP command handlers are named today. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Luiz Capitulino <lcapitulino@redhat.com>
2015-06-22qerror: Clean up QERR_ macros to expand into a single stringMarkus Armbruster1-6/+6
These macros expand into error class enumeration constant, comma, string. Unclean. Has been that way since commit 13f59ae. The error class is always ERROR_CLASS_GENERIC_ERROR since the previous commit. Clean up as follows: * Prepend every use of a QERR_ macro by ERROR_CLASS_GENERIC_ERROR, and delete it from the QERR_ macro. No change after preprocessing. * Rewrite error_set(ERROR_CLASS_GENERIC_ERROR, ...) into error_setg(...). Again, no change after preprocessing. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Luiz Capitulino <lcapitulino@redhat.com>
2015-06-22qerror: Eliminate QERR_DEVICE_NOT_FOUNDMarkus Armbruster1-2/+4
Error classes other than ERROR_CLASS_GENERIC_ERROR should not be used in new code. Hiding them in QERR_ macros makes new uses hard to spot. Fortunately, there's just one such macro left. Eliminate it with this coccinelle semantic patch: @@ expression EP, E; @@ -error_set(EP, QERR_DEVICE_NOT_FOUND, E) +error_set(EP, ERROR_CLASS_DEVICE_NOT_FOUND, "Device '%s' not found", E) Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Luiz Capitulino <lcapitulino@redhat.com>
2015-06-22QemuOpts: Wean off qerror_report_err()Markus Armbruster1-1/+1
qerror_report_err() is a transitional interface to help with converting existing monitor commands to QMP. It should not be used elsewhere. The only remaining user in qemu-option.c is qemu_opts_parse(). Is it used in QMP context? If not, we can simply replace qerror_report_err() by error_report_err(). The uses in qemu-img.c, qemu-io.c, qemu-nbd.c and under tests/ are clearly not in QMP context. The uses in vl.c aren't either, because the only QMP command handlers there are qmp_query_status() and qmp_query_machines(), and they don't call it. Remaining uses: * drive_def(): Command line -drive and such, HMP drive_add and pci_add * hmp_chardev_add(): HMP chardev-add * monitor_parse_command(): HMP core * tmp_config_parse(): Command line -tpmdev * net_host_device_add(): HMP host_net_add * net_client_parse(): Command line -net and -netdev * qemu_global_option(): Command line -global * vnc_parse_func(): Command line -display, -vnc, default display, HMP change, QMP change. Bummer. * qemu_pci_hot_add_nic(): HMP pci_add * usb_net_init(): Command line -usbdevice, HMP usb_add Propagate errors through qemu_opts_parse(). Create a convenience function qemu_opts_parse_noisily() that passes errors to error_report_err(). Switch all non-QMP users outside tests to it. That leaves vnc_parse_func(). Propagate errors through it. Since I'm touching it anyway, rename it to vnc_parse(). Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Luiz Capitulino <lcapitulino@redhat.com>
2015-06-22qdev-monitor: Propagate errors through qdev_device_add()Markus Armbruster1-21/+15
Also polish an error message while I'm touching the line anyway, Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Andreas Färber <afaerber@suse.de>
2015-06-22qdev-monitor: Propagate errors through set_property()Markus Armbruster1-3/+3
Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Andreas Färber <afaerber@suse.de>
2015-06-22qdev-monitor: Convert qbus_find() to ErrorMarkus Armbruster1-12/+20
As usual, the conversion breaks printing explanatory messages after the error: actual printing of the error gets delayed, so the explanations precede rather than follow it. Pity. Disable them for now. See also commit 7216ae3. While there, eliminate QERR_BUS_NOT_FOUND, and clean up unusual spelling in the error message. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com>
2015-06-22qdev-monitor: Fix check for full busMarkus Armbruster1-14/+17
Property bus has always been too screwed up to be really usable for values other than plain bus IDs. This just fixes a bug that crept in in commit 1395af6 "qdev: add a maximum device allowed field for the bus." It doesn't always fail when it should: $ qemu-system-x86_64 -nodefaults -device virtio-serial-pci -device virtio-rng-device,bus=pci.0/virtio-serial-pci/virtio-bus Happily plugs the virtio-rng-device into the virtio-bus provided by virtio-serial-pci, even though its only slot is already occupied by a virtio-serial-device. And sometimes fails when it shouldn't: $ qemu-system-x86_64 -nodefaults -device virtio-serial-pci -device virtserialport,bus=virtio-bus/virtio-serial-device Yes, the virtio-bus is full, but the virtio-serial-bus provided by virtio-serial-device isn't, and that's the one we're trying to use. Root cause: we check "bus full" when we resolve the first element of the path. That's the correct one only when it's also the last one. Fix by moving the "bus full" check to right before we return a bus. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com>
2015-06-22qdev-monitor: Stop error avalanche in qbus_find_recursive()Markus Armbruster1-24/+40
Reproducer: $ qemu-system-x86_64 -nodefaults -device virtio-rng-pci -device virtio-rng-pci -device virtio-rng-device,bus=virtio-bus qemu-system-x86_64: -device virtio-rng-device,bus=virtio-bus: Bus 'virtio-bus' is full qemu-system-x86_64: -device virtio-rng-device,bus=virtio-bus: Bus 'virtio-bus' is full qemu-system-x86_64: -device virtio-rng-device,bus=virtio-bus: Bus 'virtio-bus' not found qbus_find_recursive() reports the "is full" error itself, and leaves reporting "not found" to its caller. The result is confusion. Write it a function contract that permits leaving all error reporting to the caller, and implement it. Update callers to detect and report "is full". Screwed up when commit 1395af6 added the max_dev limit and the "is full" error condition to enforce it. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com>
2015-06-17s390x: Switch to s390-ccw machine as defaultAlexander Graf1-3/+3
We now finally have TCG support for the basic set of instructions necessary to run the s390-ccw machine. That means in any aspect possible that machine type is now superior to the legacy s390-virtio machine. Switch over to the ccw machine as default. That way people don't get a halfway broken machine with the s390x target. Signed-off-by: Alexander Graf <agraf@suse.de> Reviewed-by: Aurelien Jarno <aurelien@aurel32.net> Acked-by: Christian Borntraeger <borntraeger@de.ibm.com>
2015-06-09QemuOpts: Convert qemu_opt_foreach() to ErrorMarkus Armbruster1-2/+3
Retain the function value for now, to permit selective conversion of its callers. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com>
2015-06-09QemuOpts: Drop qemu_opt_foreach() parameter abort_on_failureMarkus Armbruster1-1/+1
When the argument is non-zero, qemu_opt_foreach() stops on callback returning non-zero, and returns that value. When the argument is zero, it doesn't stop, and returns the callback's value from the last iteration. The two callers that pass zero could just as well pass one: * qemu_spice_init()'s callback add_channel() either returns zero or exit()s. * config_write_opts()'s callback config_write_opt() always returns zero. Drop the parameter, and always stop. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com>
2015-06-05vl: allow full-blown QemuOpts syntax for -globalPaolo Bonzini1-7/+11
-global does not work for drivers that have a dot in their name, such as cfi.pflash01. This is just a parsing limitation, because such globals can be declared easily inside a -readconfig file. To allow this usage, support the full QemuOpts key/value syntax for -global too, for example "-global driver=cfi.pflash01,property=secure,value=on". The two formats do not conflict, because the key/value syntax does not have a period before the first equal sign. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2015-03-17qom: Implement info qom-tree HMP commandAndreas Färber1-0/+57
To complement qdev's bus-oriented info qtree, info qom-tree prints a hierarchical view of the QOM composition tree. By default, the machine composition tree is shown. This can be overriden by supplying a path argument, such as "info qom-tree /". Tested-by: Alistair Francis <alistair.francis@xilinx.com> Signed-off-by: Andreas Färber <afaerber@suse.de>
2015-02-26QemuOpts: Drop qemu_opt_set(), rename qemu_opt_set_err(), fix useMarkus Armbruster1-3/+3
qemu_opt_set() is a wrapper around qemu_opt_set() that reports the error with qerror_report_err(). Most of its users assume the function can't fail. Make them use qemu_opt_set_err() with &error_abort, so that should the assumption ever break, it'll break noisily. Just two users remain, in util/qemu-config.c. Switch them to qemu_opt_set_err() as well, then rename qemu_opt_set_err() to qemu_opt_set(). Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com>
2015-02-18hmp: Name HMP info handler functions hmp_info_SUBCOMMAND()Markus Armbruster1-2/+2
Some are called do_info_SUBCOMMAND() (old ones, usually), some hmp_info_SUBCOMMAND(), some SUBCOMMAND_info(), sometimes SUBCOMMAND pointlessly differs in spelling. Normalize to hmp_info_SUBCOMMAND(), where SUBCOMMAND is exactly the subcommand name with '-' replaced by '_'. Exceptions: * sun4m_irq_info(), sun4m_pic_info() renamed to sun4m_hmp_info_irq(), sun4m_hmp_info_pic(). * lm32_irq_info(), lm32_pic_info() renamed to lm32_hmp_info_irq(), lm32_hmp_info_pic(). Signed-off-by: Markus Armbruster <armbru@redhat.com>
2014-11-04qdev: Use qdev_get_device_class() for -device <type>,helpEduardo Habkost1-6/+3
Make sure we try to list properties from classes that can be safely used with "-device". Fixes the following crashes: $ qemu-system-x86_64 -device x86_64-cpu,help ** ERROR:qom/object.c:336:object_initialize_with_type: assertion failed: (type->abstract == false) Aborted (core dumped) $ qemu-system-x86_64 -device host-x86_64-cpu,help qemu-system-x86_64: [...]/target-i386/cpu.c:1329: host_x86_cpu_initfn: Assertion `(kvm_allowed)' failed. Aborted (core dumped) After applying this patch: $ qemu-system-x86_64 -device x86_64-cpu,help Parameter 'driver' expects non-abstract device type $ qemu-system-x86_64 -device host-x86_64-cpu,help Parameter 'driver' expects pluggable device type Signed-off-by: Eduardo Habkost <ehabkost@redhat.com> Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-11-04qdev: Move error printing to the end of qdev_device_help()Eduardo Habkost1-3/+6
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com> Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-11-04qdev: Create qdev_get_device_class() functionEduardo Habkost1-28/+42
Extract the DeviceClass lookup from qdev_device_add() to a separate function. Signed-off-by: Eduardo Habkost <ehabkost@redhat.com> Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-10-15qmp: Print descriptions of object propertiesGonglei1-1/+6
Add a new "description" field to DevicePropertyInfo. The descriptions can serve as documentation in the code, and they can be used to provide better help. For example: $./qemu-system-x86_64 -device virtio-blk-pci,? Before this patch: virtio-blk-pci.iothread=link<iothread> virtio-blk-pci.x-data-plane=bool virtio-blk-pci.scsi=bool virtio-blk-pci.config-wce=bool virtio-blk-pci.serial=str virtio-blk-pci.secs=uint32 virtio-blk-pci.heads=uint32 virtio-blk-pci.cyls=uint32 virtio-blk-pci.discard_granularity=uint32 virtio-blk-pci.bootindex=int32 virtio-blk-pci.opt_io_size=uint32 virtio-blk-pci.min_io_size=uint16 virtio-blk-pci.physical_block_size=uint16 virtio-blk-pci.logical_block_size=uint16 virtio-blk-pci.drive=str virtio-blk-pci.virtio-backend=child<virtio-blk-device> virtio-blk-pci.command_serr_enable=on/off virtio-blk-pci.multifunction=on/off virtio-blk-pci.rombar=uint32 virtio-blk-pci.romfile=str virtio-blk-pci.addr=pci-devfn virtio-blk-pci.event_idx=on/off virtio-blk-pci.indirect_desc=on/off virtio-blk-pci.vectors=uint32 virtio-blk-pci.ioeventfd=on/off virtio-blk-pci.class=uint32 After: virtio-blk-pci.iothread=link<iothread> virtio-blk-pci.x-data-plane=bool (on/off) virtio-blk-pci.scsi=bool (on/off) virtio-blk-pci.config-wce=bool (on/off) virtio-blk-pci.serial=str virtio-blk-pci.secs=uint32 virtio-blk-pci.heads=uint32 virtio-blk-pci.cyls=uint32 virtio-blk-pci.discard_granularity=uint32 virtio-blk-pci.bootindex=int32 virtio-blk-pci.opt_io_size=uint32 virtio-blk-pci.min_io_size=uint16 virtio-blk-pci.physical_block_size=uint16 (A power of two between 512 and 32768) virtio-blk-pci.logical_block_size=uint16 (A power of two between 512 and 32768) virtio-blk-pci.drive=str (ID of a drive to use as a backend) virtio-blk-pci.virtio-backend=child<virtio-blk-device> virtio-blk-pci.command_serr_enable=bool (on/off) virtio-blk-pci.multifunction=bool (on/off) virtio-blk-pci.rombar=uint32 virtio-blk-pci.romfile=str virtio-blk-pci.addr=int32 (Slot and optional function number, example: 06.0 or 06) virtio-blk-pci.event_idx=bool (on/off) virtio-blk-pci.indirect_desc=bool (on/off) virtio-blk-pci.vectors=uint32 virtio-blk-pci.ioeventfd=bool (on/off) virtio-blk-pci.class=uint32 Cc: Markus Armbruster <armbru@redhat.com> Signed-off-by: Gonglei <arei.gonglei@huawei.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-10-15qdev: device_del: Search for to be unplugged device in 'peripheral' containerIgor Mammedov1-4/+9
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: do not allow to instantiate non hotpluggable device with device_addIgor Mammedov1-1/+2
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 Mammedov1-1/+1
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>
2014-09-22qdev-monitor: fix segmentation fault on qdev_device_help()Gonglei1-1/+1
Normally, qmp_device_list_properties() may return NULL when a device haven't special properties excpet Object and DeviceState properties, such as virtio-balloon-device. We just need check local_err instead of prop_list. Example: Segmentation fault (core dumped) The backtrace as below: Program received signal SIGSEGV, Segmentation fault. 0x00005555559af1a8 in error_get_pretty (err=0x0) at util/error.c:152 152 return err->msg; (gdb) bt func=0x55555574a6ca <device_help_func>, opaque=0x0, abort_on_failure=0) at util/qemu-option.c:1072 Signed-off-by: Gonglei <arei.gonglei@huawei.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2014-08-15Merge remote-tracking branch 'remotes/mjt/tags/trivial-patches-2014-08-15' ↵Peter Maydell1-1/+1
into staging trivial patches for 2014-08-15 # gpg: Signature made Fri 15 Aug 2014 16:13:03 BST using RSA key ID A4C3D7DB # gpg: Good signature from "Michael Tokarev <mjt@tls.msk.ru>" # gpg: aka "Michael Tokarev <mjt@corpit.ru>" # gpg: aka "Michael Tokarev <mjt@debian.org>" # gpg: WARNING: This key is not certified with a trusted signature! # gpg: There is no indication that the signature belongs to the owner. # Primary key fingerprint: 6EE1 95D1 886E 8FFB 810D 4324 457C E0A0 8044 65C5 # Subkey fingerprint: 6F67 E18E 7C91 C5B1 5514 66A7 BEE5 9D74 A4C3 D7DB * remotes/mjt/tags/trivial-patches-2014-08-15: ivshmem: check the value returned by fstat() l2cap: fix access to freed memory intc: i8259: Convert Array allocation to g_new0 ppc: convert g_new(qemu_irq usages to g_new0 ssi: xilinx_spi: Initialise CS GPIOs as NULL vl: free err qemu-options.hx: fix typo about l2tpv3 vmxnet3: don't use 'Yoda conditions' vl: don't use 'Yoda conditions' spice: don't use 'Yoda conditions' don't use 'Yoda conditions' isa-bus: don't use 'Yoda conditions' audio: don't use 'Yoda conditions' usb: don't use 'Yoda conditions' CODING_STYLE: Section about conditional statement pci-host: update uncorresponding description pci-host: update obsolete reference about piix_pci.c qemu-options.hx: fix a typo of chardev memory: Update obsolete comment about AddrRange field type apic: Fix reported DFR content Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-08-15don't use 'Yoda conditions'Gonglei1-1/+1
imitate nearby code about using '!value' or 'value == NULL' Signed-off-by: Gonglei <arei.gonglei@huawei.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
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