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| author | Joonas Lahtinen <[email protected]> | 2017-11-27 09:12:33 +0000 |
|---|---|---|
| committer | Joonas Lahtinen <[email protected]> | 2017-11-30 08:11:49 +0000 |
| commit | fd50fbb6bfdea5daa4ae4dd7b7082485ac44bdf5 (patch) | |
| tree | 866705db14c323f1233b0e9724ce2ae018c823d3 /drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c | |
| parent | Merge tag 'gvt-fixes-2017-11-28' of https://github.com/intel/gvt-linux into d... (diff) | |
| download | kernel-fd50fbb6bfdea5daa4ae4dd7b7082485ac44bdf5.tar.gz kernel-fd50fbb6bfdea5daa4ae4dd7b7082485ac44bdf5.zip | |
drm/i915: Disable THP until we have a GPU read BW W/A
We seem to be missing some W/A for 2M pages and are getting
a hit on raw GPU read bandwidths (even 30%) even though the
GPU write bandwidths improve (even 10%).
For now, disable THP, which is our only practical source of
2M pages until we have a W/A for the issue.
v2:
- Be explicit that we talk about GPU bandwidths (Eero)
- s/deny/never/ because that's why (Chris)
Reported-by: Valtteri Rantala <[email protected]>
Fixes: b901bb89324a ("drm/i915/gemfs: enable THP")
Signed-off-by: Joonas Lahtinen <[email protected]>
Cc: Matthew Auld <[email protected]>
Cc: Chris Wilson <[email protected]>
Cc: Jani Nikula <[email protected]>
Cc: Rodrigo Vivi <[email protected]>
Cc: Valtteri Rantala <[email protected]>
Cc: Eero Tamminen <[email protected]>
Reviewed-by: Chris Wilson <[email protected]>
Reviewed-by: Matthew Auld <[email protected]>
Tested-by: Valtteri Rantala <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
(cherry picked from commit 9987da4b5dcfc8b94b702d4bb94b30955eb73c75)
Signed-off-by: Joonas Lahtinen <[email protected]>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c')
0 files changed, 0 insertions, 0 deletions