Re: [PATCH v5 02/10] accel: Introduce 'query-accels' QMP command

[Markus Armbruster <armbru@redhat.com>]

Philippe Mathieu-Daudé <philmd@redhat.com> writes:

> Introduce the 'query-accels' QMP command which returns a list
> of built-in accelerator names.
>
> - Accelerator is a QAPI enum of all existing accelerators,
>
> - AcceleratorInfo is a QAPI structure providing accelerator
>   specific information. Currently the common structure base
>   provides the name of the accelerator, while the specific
>   part is empty, but each accelerator can expand it.
>
> - 'query-accels' QMP command returns a list of @AcceleratorInfo
>
> For example on a KVM-only build we get:
>
>     { "execute": "query-accels" }
>     {
>         "return": [
>             {
>                 "name": "qtest"
>             },
>             {
>                 "name": "kvm"
>             }
>         ]
>     }
>
> Note that we can't make the enum values or union branches conditional
> because of target-specific poisoning of accelerator definitions.

Let me try to complete this argument;

  If we did, enum Accelerator could only be used in target-specific
  code.  But we want to use it in generic code, too.

Which generic code exactly?

> Reviewed-by: Eric Blake <eblake@redhat.com>
> Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
> Tested-by: Alex Bennée <alex.bennee@linaro.org>
> Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>

Patch looks good to me.