Re: [Qemu-devel] [PATCH v10 18/19] docs: Sysfs ABI for mediated device framework

[Kirti Wankhede]

On 10/31/2016 12:49 PM, Jike Song wrote:
> On 10/27/2016 05:29 AM, Kirti Wankhede wrote:
>> Added details of sysfs ABI for mediated device framework
>>
>> Signed-off-by: Kirti Wankhede <address@hidden>
>> Signed-off-by: Neo Jia <address@hidden>
>> Change-Id: Icb0fd4ed58a2fa793fbcb1c3d5009a4403c1f3ac
>> ---
>>  Documentation/ABI/testing/sysfs-bus-vfio-mdev | 111 
>> ++++++++++++++++++++++++++
>>  1 file changed, 111 insertions(+)
>>  create mode 100644 Documentation/ABI/testing/sysfs-bus-vfio-mdev
>>
>> diff --git a/Documentation/ABI/testing/sysfs-bus-vfio-mdev 
>> b/Documentation/ABI/testing/sysfs-bus-vfio-mdev
>> new file mode 100644
>> index 000000000000..452dbe39270e
>> --- /dev/null
>> +++ b/Documentation/ABI/testing/sysfs-bus-vfio-mdev
>> @@ -0,0 +1,111 @@
>> +What:           /sys/.../<device>/mdev_supported_types/
>> +Date:           October 2016
>> +Contact:        Kirti Wankhede <address@hidden>
>> +Description:
>> +                This directory contains list of directories of currently
>> +            supported mediated device types and their details for
>> +            <device>. Supported type attributes are defined by the
>> +            vendor driver who registers with Mediated device framework.
>> +            Each supported type is a directory whose name is created
>> +            by adding the device driver string as a prefix to the
>> +            string provided by the vendor driver.
>> +
>> +What:           /sys/.../<device>/mdev_supported_types/<type-id>/
>> +Date:           October 2016
>> +Contact:        Kirti Wankhede <address@hidden>
>> +Description:
>> +                This directory gives details of supported type, like name,
>> +            description, available_instances, device_api etc.
>> +            'device_api' and 'available_instances' are mandatory
>> +            attributes to be provided by vendor driver. 'name',
>> +            'description' and other vendor driver specific attributes
>> +            are optional.
>> +
> 
> Hi Kirti,
> 
> Is there any checking in the mdev framework that mandatory attributes
> are actually provided?
> 

No. These are exposed so that libvirt can use those to create devices.
If those are not provided, libvirt would not work.

Kirti.