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qapi/qdev.json: add DEVICE_UNPLUG_GUEST_ERROR QAPI event

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At this moment we only provide one event to report a hotunplug error,
MEM_UNPLUG_ERROR. As of Linux kernel 5.12 and QEMU 6.0.0, the pseries
machine is now able to report unplug errors for other device types, such
as CPUs.

Instead of creating a (device_type)_UNPLUG_ERROR for each new device,
create a generic DEVICE_UNPLUG_GUEST_ERROR event that can be used by all
guest side unplug errors in the future. This event has a similar API as
the existing DEVICE_DELETED event, always providing the QOM path of the
device and dev->id if there's any.

With this new generic event, MEM_UNPLUG_ERROR is now marked as deprecated.

Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Greg Kurz <groug@kaod.org>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Message-Id: <20210907004755.424931-6-danielhb413@gmail.com>
[dwg: Correct missing ')' in stubs/qdev.c]
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
This commit is contained in:
Daniel Henrique Barboza 2021-09-06 21:47:53 -03:00 • committed by David Gibson
parent a5bc19c542
commit d43f1670c7
4 changed files with 49 additions and 2 deletions
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10
docs/about/deprecated.rst
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@ -238,6 +238,16 @@ The ``I7200`` guest CPU relies on the nanoMIPS ISA, which is deprecated
(the ISA has never been upstreamed to a compiler toolchain). Therefore
this CPU is also deprecated.
QEMU API (QAPI) events
----------------------
``MEM_UNPLUG_ERROR`` (since 6.2)
''''''''''''''''''''''''''''''''''''''''''''''''''''''''
Use the more generic event ``DEVICE_UNPLUG_GUEST_ERROR`` instead.
System emulator machines
------------------------