Re: [Qemu-devel] [RFC v4 08/13] ide: enumerate_slots implementation

[Markus Armbruster <armbru@redhat.com>]

John Snow <jsnow@redhat.com> writes:

> On 08/14/2017 05:57 PM, Eduardo Habkost wrote:
>> Example output when using "-machine q35":
>> 
>>   {
>>     "available": true,
>>     "count": 1,
>>     "device-types": [
>>       "ide-device"
>>     ],
>>     "hotpluggable": false,
>>     "opts": [
>>       { "option": "unit", "values": 0 },
>>       { "option": "bus", "values": "ide.2" }
>>     ],
>>     "opts-complete": true
>>   }
>>   {
>>     "available": false,
>>     "count": 1,
>>     "device": "/machine/unattached/device[19]",
>>     "device-types": [
>>       "ide-device"
>>     ],
>>     "hotpluggable": false,
>>     "opts": [
>>       { "option": "unit", "values": 1 },
>>       { "option": "bus", "values": "ide.2" } ],
>>     "opts-complete": true
>>   }
>>   {
>>     "available": true,
>>     "count": 10,
>>     "device-types": [
>>       "ide-device"
>>     ],
>>     "hotpluggable": false,
>>     "opts": [
>>       { "option": "unit", "values": [ [ 0, 1 ] ] },
>
> Hm, these unit values aren't really correct -- we do not support
> primary/secondary semantics for IDE buses on the AHCI device. I guess
> they technically exist, but you cannot use them for anything.
>
> Should I do something to "disable" or otherwise hide the unusable
> secondary unit slots for AHCI devices?

I think that would make this introspection more useful.