Public bug reported:
There currently is no interface for an external tool to determine what
GIC versions can be used by guests on the current hardware/QEMU
combination. Upstream patches have recently landed to solve this
problem, exposing a QMP interface for probing the system:
dannf@mustang:~$ telnet localhost 4444
Trying ::1...
Connected to localhost.
Escape character is '^]'.
{"QMP": {"version": {"qemu": {"micro": 0, "minor": 5, "major": 2}, "package": "
(Debian 1:2.5+dfsg-5ubuntu6)"}, "capabilities": []}}
{ "execute": "qmp_capabilities" }
{"return": {}}
{ "execute": "query-gic-capabilities" }
{"return": [{"emulated": false, "version": 3, "kernel": false}, {"emulated":
true, "version": 2, "kernel": true}]}
This is important, because VM management software (i.e. libvirt) need to
be able to figure out what guest configurations are supported.
** Affects: qemu (Ubuntu)
Importance: High
Status: Confirmed
** Tags: arm64 armhf patch
** Tags added: patch
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https://bugs.launchpad.net/bugs/1566564
Title:
support query-gic-version QMP command
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