This is a note to let you know that I've just added the patch titled
drm/amd/display: Use gpuvm_min_page_size_kbytes for DML2 surfaces
to the 6.10-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
drm-amd-display-use-gpuvm_min_page_size_kbytes-for-d.patch
and it can be found in the queue-6.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 74cb516c5ef321e3636b64783a42545f4c3a975c
Author: Nicholas Kazlauskas <nicholas.kazlauskas@xxxxxxx>
Date: Thu Jul 18 11:53:31 2024 -0400
drm/amd/display: Use gpuvm_min_page_size_kbytes for DML2 surfaces
[ Upstream commit 31663521ede2edb622ee1b397ae3ac666d6351c5 ]
[Why]
It's currently hard coded to 256 when it should be using the SOC
provided values. This can result in corruption with linear surfaces
where we prefetch more PTE than the buffer can hold.
[How]
Update the min page size correctly for the plane.
Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@xxxxxxx>
Reviewed-by: Jun Lei <jun.lei@xxxxxxx>
Tested-by: Daniel Wheeler <daniel.wheeler@xxxxxxx>
Signed-off-by: Rodrigo Siqueira <rodrigo.siqueira@xxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/gpu/drm/amd/display/dc/dml2/dml2_translation_helper.c b/drivers/gpu/drm/amd/display/dc/dml2/dml2_translation_helper.c
index edff6b447680c..d5dbfb33f93dc 100644
--- a/drivers/gpu/drm/amd/display/dc/dml2/dml2_translation_helper.c
+++ b/drivers/gpu/drm/amd/display/dc/dml2/dml2_translation_helper.c
@@ -828,7 +828,9 @@ static void get_scaler_data_for_plane(const struct dc_plane_state *in, struct dc
memcpy(out, &temp_pipe->plane_res.scl_data, sizeof(*out));
}
-static void populate_dummy_dml_plane_cfg(struct dml_plane_cfg_st *out, unsigned int location, const struct dc_stream_state *in)
+static void populate_dummy_dml_plane_cfg(struct dml_plane_cfg_st *out, unsigned int location,
+ const struct dc_stream_state *in,
+ const struct soc_bounding_box_st *soc)
{
dml_uint_t width, height;
@@ -845,7 +847,7 @@ static void populate_dummy_dml_plane_cfg(struct dml_plane_cfg_st *out, unsigned
out->CursorBPP[location] = dml_cur_32bit;
out->CursorWidth[location] = 256;
- out->GPUVMMinPageSizeKBytes[location] = 256;
+ out->GPUVMMinPageSizeKBytes[location] = soc->gpuvm_min_page_size_kbytes;
out->ViewportWidth[location] = width;
out->ViewportHeight[location] = height;
@@ -882,7 +884,9 @@ static void populate_dummy_dml_plane_cfg(struct dml_plane_cfg_st *out, unsigned
out->ScalerEnabled[location] = false;
}
-static void populate_dml_plane_cfg_from_plane_state(struct dml_plane_cfg_st *out, unsigned int location, const struct dc_plane_state *in, struct dc_state *context)
+static void populate_dml_plane_cfg_from_plane_state(struct dml_plane_cfg_st *out, unsigned int location,
+ const struct dc_plane_state *in, struct dc_state *context,
+ const struct soc_bounding_box_st *soc)
{
struct scaler_data *scaler_data = kzalloc(sizeof(*scaler_data), GFP_KERNEL);
if (!scaler_data)
@@ -893,7 +897,7 @@ static void populate_dml_plane_cfg_from_plane_state(struct dml_plane_cfg_st *out
out->CursorBPP[location] = dml_cur_32bit;
out->CursorWidth[location] = 256;
- out->GPUVMMinPageSizeKBytes[location] = 256;
+ out->GPUVMMinPageSizeKBytes[location] = soc->gpuvm_min_page_size_kbytes;
out->ViewportWidth[location] = scaler_data->viewport.width;
out->ViewportHeight[location] = scaler_data->viewport.height;
@@ -1174,7 +1178,8 @@ void map_dc_state_into_dml_display_cfg(struct dml2_context *dml2, struct dc_stat
disp_cfg_plane_location = dml_dispcfg->num_surfaces++;
populate_dummy_dml_surface_cfg(&dml_dispcfg->surface, disp_cfg_plane_location, context->streams[i]);
- populate_dummy_dml_plane_cfg(&dml_dispcfg->plane, disp_cfg_plane_location, context->streams[i]);
+ populate_dummy_dml_plane_cfg(&dml_dispcfg->plane, disp_cfg_plane_location,
+ context->streams[i], &dml2->v20.dml_core_ctx.soc);
dml_dispcfg->plane.BlendingAndTiming[disp_cfg_plane_location] = disp_cfg_stream_location;
@@ -1190,7 +1195,10 @@ void map_dc_state_into_dml_display_cfg(struct dml2_context *dml2, struct dc_stat
ASSERT(disp_cfg_plane_location >= 0 && disp_cfg_plane_location <= __DML2_WRAPPER_MAX_STREAMS_PLANES__);
populate_dml_surface_cfg_from_plane_state(dml2->v20.dml_core_ctx.project, &dml_dispcfg->surface, disp_cfg_plane_location, context->stream_status[i].plane_states[j]);
- populate_dml_plane_cfg_from_plane_state(&dml_dispcfg->plane, disp_cfg_plane_location, context->stream_status[i].plane_states[j], context);
+ populate_dml_plane_cfg_from_plane_state(
+ &dml_dispcfg->plane, disp_cfg_plane_location,
+ context->stream_status[i].plane_states[j], context,
+ &dml2->v20.dml_core_ctx.soc);
if (stream_mall_type == SUBVP_MAIN) {
dml_dispcfg->plane.UseMALLForPStateChange[disp_cfg_plane_location] = dml_use_mall_pstate_change_sub_viewport;
