Re: [PATCH 2/3] drm/i915/gvt: make gvt oblivious of kvmgt data structures

[Jani Nikula]

On Wed, 08 Jan 2020, Julian Stecklina <julian.stecklina@xxxxxxxxxxxxxxxxxxxxx> wrote:
> On Wed, 2020-01-08 at 12:24 +0200, Jani Nikula wrote:
>> On Mon, 06 Jan 2020, Julian Stecklina <julian.stecklina@xxxxxxxxxxxxxxxxxxxxx>
>> wrote:
> [...]
>> > +	/* Hypervisor-specific device state. */
>> > +	void *vdev;
>> 
>> I have no clue about the relative merits of the patch, but you can use
>> the actual type for the pointer with a forward declaration. You don't
>> need the definition for that.
>> 
>> i.e.
>> 
>> struct kvmgt_vdev;
>> ...
>> 	struct kvmgt_vdev *vdev;
>
> The goal here is to make the GVT code independent of the hypervisor backend.
> Different hypervisor backends need to keep different per-device state, so using
> the KVM type here defeats the purpose.
>
> I assume this is not only useful for us, but also for other hypervisor backends,
> such as Xen or 3rd-party hypervisors.

Right, carry on, sorry for the noise. ;)

BR,
Jani.

-- 
Jani Nikula, Intel Open Source Graphics Center