From mboxrd@z Thu Jan  1 00:00:00 1970
Received: from eggs.gnu.org ([2001:4830:134:3::10]:50891)
	by lists.gnu.org with esmtp (Exim 4.71)
	(envelope-from <armbru@redhat.com>) id 1aiRF7-0005H0-G6
	for qemu-devel@nongnu.org; Tue, 22 Mar 2016 14:41:26 -0400
Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71)
	(envelope-from <armbru@redhat.com>) id 1aiRF6-0005Gh-DJ
	for qemu-devel@nongnu.org; Tue, 22 Mar 2016 14:41:25 -0400
From: Markus Armbruster <armbru@redhat.com>
References: <1458271654-23706-1-git-send-email-peterx@redhat.com>
	<1458271654-23706-2-git-send-email-peterx@redhat.com>
	<87zitqjrhj.fsf@blackfin.pond.sub.org>
Date: Tue, 22 Mar 2016 19:41:17 +0100
In-Reply-To: <87zitqjrhj.fsf@blackfin.pond.sub.org> (Markus Armbruster's
	message of "Tue, 22 Mar 2016 19:29:44 +0100")
Message-ID: <87vb4eicdu.fsf@blackfin.pond.sub.org>
MIME-Version: 1.0
Content-Type: text/plain
Subject: Re: [Qemu-devel] [PATCH v5 1/5] arm: qmp: add GICCapability struct
List-Id: <qemu-devel.nongnu.org>
List-Unsubscribe: <https://lists.nongnu.org/mailman/options/qemu-devel>,
	<mailto:qemu-devel-request@nongnu.org?subject=unsubscribe>
List-Archive: <http://lists.nongnu.org/archive/html/qemu-devel>
List-Post: <mailto:qemu-devel@nongnu.org>
List-Help: <mailto:qemu-devel-request@nongnu.org?subject=help>
List-Subscribe: <https://lists.nongnu.org/mailman/listinfo/qemu-devel>,
	<mailto:qemu-devel-request@nongnu.org?subject=subscribe>
To: Peter Xu <peterx@redhat.com>
Cc: wei@redhat.com, peter.maydell@linaro.org, drjones@redhat.com, mdroth@linux.vnet.ibm.com, qemu-devel@nongnu.org, abologna@redhat.com, qemu-arm@nongnu.org

Markus Armbruster <armbru@redhat.com> writes:

> Peter Xu <peterx@redhat.com> writes:
>
>> Define new struct to describe whether we support specific GIC version.
>>
>> Signed-off-by: Peter Xu <peterx@redhat.com>
>> ---
>>  qapi-schema.json | 22 ++++++++++++++++++++++
>>  1 file changed, 22 insertions(+)
>>
>> diff --git a/qapi-schema.json b/qapi-schema.json
>> index f253a37..da9671a 100644
>> --- a/qapi-schema.json
>> +++ b/qapi-schema.json
>> @@ -4134,3 +4134,25 @@
>>  ##
>>  { 'enum': 'ReplayMode',
>>    'data': [ 'none', 'record', 'play' ] }
>> +
>> +##
>> +# @GICCapability:
>> +#
>> +# This struct describes capability for a specific GIC version. These
>> +# bits are not only decided by QEMU/KVM software version, but also
>> +# decided by the hardware that the program is running upon.
>> +#
>> +# @version:  version of GIC to be described.
>> +#
>> +# @emulated: whether current QEMU/hardware supports emulated GIC
>> +#            device in user space.
>> +#
>> +# @kernel:   whether current QEMU/hardware supports hardware
>> +#            accelerated GIC device in kernel.
>> +#
>> +# Since: 2.6
>> +##
>> +{ 'struct': 'GICCapability',
>> +  'data': { 'version': 'int',
>> +            'emulated': 'bool',
>> +            'kernel': 'bool' } }
>
> Are all four combinations of (emulated, kernel) possible?

Moreover, what do the combinations mean from a practical point of view?
What would a management application do with the information?