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qom: Document qom/device-list-properties implementation specific 

The recently introduced qom-list-properties QMP command raised
a question what properties it (and its cousin - device-list-properties)
can possibly print - only those defined by DeviceClass::props
or dynamically created in TypeInfo::instance_init() so properties created
elsewhere won't show up and this behaviour might confuse the user.

For example, PIIX4 does that from piix4_pm_realize() via
  piix4_pm_add_propeties():

object_property_add_uint8_ptr(OBJECT(s), ACPI_PM_PROP_ACPI_ENABLE_CMD,
                              &acpi_enable_cmd, NULL);

This adds a note to the command descriptions about the limitation.

Reviewed-by: Markus Armbruster <armbru@redhat.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Message-Id: <20180530071129.9013-1-aik@ozlabs.ru>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Alexey Kardashevskiy 2018-05-30 17:11:29 +10:00 committed by Paolo Bonzini
parent b969ea6bcd
commit 24ed117232
1 changed files with 8 additions and 0 deletions
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8
qapi/misc.json
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@ -1529,6 +1529,10 @@
#
# Returns: a list of ObjectPropertyInfo describing a devices properties
#
# Note: objects can create properties at runtime, for example to describe
# links between different devices and/or objects. These properties
# are not included in the output of this command.
#
# Since: 1.2
##
{ 'command': 'device-list-properties',
@ -1542,6 +1546,10 @@
#
# @typename: the type name of an object
#
# Note: objects can create properties at runtime, for example to describe
# links between different devices and/or objects. These properties
# are not included in the output of this command.
#
# Returns: a list of ObjectPropertyInfo describing object properties
#
# Since: 2.12