[PATCH] drm/radeon: don't init gpuvm if accel is disabled

[Christian König]

Am 29.01.2015 um 08:46 schrieb Oded Gabbay:
>
>
> On 01/28/2015 09:41 PM, Alex Deucher wrote:
>> If acceleration is disabled, it does not make sense
>> to init gpuvm since nothing will use it.  Moreover,
>> if radeon_vm_init() gets called it uses accel to try
>> and clear the pde tables, etc. which results in a bug.
>>
>> Bug:
>> https://bugs.freedesktop.org/show_bug.cgi?id=88786
>>
>> Signed-off-by: Alex Deucher<alexander.deucher at amd.com>
>> Cc:stable at vger.kernel.org

Patch is Reviewed-by: Christian König <christian.koenig at amd.com>

> Alex,
> What is accel ?
> Is there a situation where accel is disabled and HSA should work ? 
> e.g. headless mode ?

Not really.

Acceleration is disabled mostly because the user forgotten to install 
the firmware or we have a rather big bug in the driver and can't get the 
CP running.

In that case we still try to provide mode setting to get an error 
message on the screen, but everything else won't work.

Regards,
Christian.


>
> If so, we need gpuvm for local memory.
>
>     Oded
> _______________________________________________
> dri-devel mailing list
> dri-devel at lists.freedesktop.org
> http://lists.freedesktop.org/mailman/listinfo/dri-devel