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QMP: Add query-hotpluggable-cpus

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It will allow mgmt to query present and hotpluggable CPU objects,
it is required from a target platform that wishes to support command
to implement and set MachineClass.query_hotpluggable_cpus callback,
which will return a list of possible CPU objects with options that
would be needed for hotplugging possible CPU objects.

There are:
'type': 'str' - QOM CPU object type for usage with device_add
'vcpus-count': 'int' - number of logical VCPU threads per
                        CPU object (mgmt needs to know)

and a set of optional fields that are to used for hotplugging a CPU
objects and would allows mgmt tools to know what/where it could be
hotplugged;
[node],[socket],[core],[thread]

For present CPUs there is a 'qom-path' field which would allow mgmt to
inspect whatever object/abstraction the target platform considers
as CPU object.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
This commit is contained in:
Igor Mammedov 2016-06-10 06:29:06 +05:30 • committed by David Gibson
parent 6f4b5c3ec5
commit d4633541ee
4 changed files with 96 additions and 0 deletions
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5
include/hw/boards.h
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@ -81,6 +81,10 @@ typedef struct {
* Returns an array of @CPUArchId architecture-dependent CPU IDs
* which includes CPU IDs for present and possible to hotplug CPUs.
* Caller is responsible for freeing returned list.
* @query_hotpluggable_cpus:
* Returns a @HotpluggableCPUList, which describes CPUs objects which
* could be added with -device/device_add.
* Caller is responsible for freeing returned list.
*/
struct MachineClass {
/*< private >*/
@ -124,6 +128,7 @@ struct MachineClass {
DeviceState *dev);
unsigned (*cpu_index_to_socket_id)(unsigned cpu_index);
CPUArchIdList *(*possible_cpu_arch_ids)(MachineState *machine);
HotpluggableCPUList *(*query_hotpluggable_cpus)(MachineState *machine);
};
/**