[drm-next] drm/radeon: use IBs for VM page table updates

[Christian König]

Am 01.02.2013 15:04, schrieb Alex Deucher:
> On Fri, Feb 1, 2013 at 5:25 AM, Christian König <deathsimple at vodafone.de> wrote:
>> [SNAP]
>> Wouldn't it make sense to use the IB functions (ib_get, ib_schedule,
>> ib_free) here instead of filling the IB structure manually?
> I tried that initially, but ran into several problems and it ended up
> being easier to just allocate and schedule the IB directly.  The IB
> functions have self contained code to deal with semaphores and fences
> that I couldn't figure out how to make work cleanly with the vm
> semaphore and fence.  radeon_ib_schedule() takes the ring lock so if I
> needed to do any direct ring manipuation prior, I'd need to drop the
> lock before calling ib_schedule().  Let me know if you have any
> suggestions.

Just send out an updated version of the patch, which seems to look quite 
a bit cleaner and still works fine (at least on my SI board).

Christian.

>
> Alex
>
>
>> Apart from that it looks quite good.
>>
>> Christian.
>>