[Mesa-dev] [PATCH] winsys/radeon: add env var to disable VM on Cayman/Trinity

[Alex Deucher]

On Mon, Jun 10, 2013 at 5:36 PM, Marek Olšák <maraeo at gmail.com> wrote:
> Reviewed-by: Marek Olšák <maraeo at gmail.com>
>
> FYI, Cayman works for me as I said in
> https://bugs.freedesktop.org/show_bug.cgi?id=62959 . I don't remember
> if the issue has been fixed upstream.

Yes, the fixes should be upstream, however, Tom has had some strange
behavior with compute using VM and there are a number of strange bugs
on TN and cayman that may still be VM related.

Alex

>
> Marek
>
> On Mon, Jun 10, 2013 at 10:34 PM,  <alexdeucher at gmail.com> wrote:
>> From: Alex Deucher <alexander.deucher at amd.com>
>>
>> Set env var RADEON_VA=0 to disable VM on Cayman/Trinity.
>> Useful for debugging.
>>
>> Note: this is a candidate for the 9.1 branch.
>>
>> Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
>> ---
>>  src/gallium/winsys/radeon/drm/radeon_drm_winsys.c |    2 ++
>>  1 files changed, 2 insertions(+), 0 deletions(-)
>>
>> diff --git a/src/gallium/winsys/radeon/drm/radeon_drm_winsys.c b/src/gallium/winsys/radeon/drm/radeon_drm_winsys.c
>> index 15d5d31..ee4dfa1 100644
>> --- a/src/gallium/winsys/radeon/drm/radeon_drm_winsys.c
>> +++ b/src/gallium/winsys/radeon/drm/radeon_drm_winsys.c
>> @@ -399,6 +399,8 @@ static boolean do_winsys_init(struct radeon_drm_winsys *ws)
>>                                        &ws->info.r600_ib_vm_max_size))
>>                  ws->info.r600_virtual_address = FALSE;
>>          }
>> +       if (ws->gen == DRV_R600 && !debug_get_bool_option("RADEON_VA", TRUE))
>> +               ws->info.r600_virtual_address = FALSE;
>>      }
>>
>>      /* Get max pipes, this is only needed for compute shaders.  All evergreen+
>> --
>> 1.7.7.5
>>
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