Hardware 3D acceleration doesn't work anymore with the latest git kernel

[Christian Zigotzky]

Hi Alex,

I reverted the following files in the first bad commit (first DRM 
updates) [1].

-rw-r--r--    drivers/gpu/drm/radeon/Makefile    5
-rw-r--r--    drivers/gpu/drm/radeon/atombios_dp.c    46
-rw-r--r--    drivers/gpu/drm/radeon/ci_dpm.c    22
-rw-r--r--    drivers/gpu/drm/radeon/ci_dpm.h    1
-rw-r--r--    drivers/gpu/drm/radeon/ci_smc.c    21
-rw-r--r--    drivers/gpu/drm/radeon/cik.c    14
-rw-r--r--    drivers/gpu/drm/radeon/cikd.h    2
-rw-r--r--    drivers/gpu/drm/radeon/r100.c    2
-rw-r--r--    drivers/gpu/drm/radeon/r600_cs.c    2
-rw-r--r--    drivers/gpu/drm/radeon/r600_hdmi.c    2
-rw-r--r--    drivers/gpu/drm/radeon/radeon.h    3
-rw-r--r--    drivers/gpu/drm/radeon/radeon_connectors.c    16
-rw-r--r--    drivers/gpu/drm/radeon/radeon_drv.c    10
-rw-r--r--    drivers/gpu/drm/radeon/radeon_fb.c    4
-rw-r--r--    drivers/gpu/drm/radeon/radeon_kfd.c    870
-rw-r--r--    drivers/gpu/drm/radeon/radeon_kms.c    7
-rw-r--r--    drivers/gpu/drm/radeon/radeon_mode.h    4
-rw-r--r--    drivers/gpu/drm/radeon/radeon_trace.h    2
-rw-r--r--    drivers/gpu/drm/radeon/radeon_ttm.c

After that I compiled the latest git kernel again. Unfortunately I don't 
have hardware 3D acceleration. That means the bug isn't in these files 
above but it is somewhere in the first DRM updates [1].

I need really your help because I don't have any experiences with this 
source code. I will try to revert more files.

Thanks,
Christian


[1] 
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=e60e1ee60630cafef5e430c2ae364877e061d980


On 21 November 2017 at 05:38AM, Alex Deucher wrote:
>
> If you look at the code, radeon_bo_create() is failing with -ENOMEM in
> radeon_wb_init().  If you look at radeon_bo_create(), it can fail for
> the following reasons:
> 1. kzalloc fails
> 2. drm_gem_object_init fails
> 3. ttm_bo_init fails
>
> I'd start by looking into what's changed in those areas.
>
> Alex
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