Commit f2cc50ce authored by Eric Huang's avatar Eric Huang Committed by Alex Deucher
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drm/amdkfd: change SDMA MQD memory type 



SDMA MQD memory type is NC that causes MQD data overwritten
accidentally by an old stable cache line. Changing it to UC
default for GART will fix the issue.

The mqd_gfx9 parameter is meant for control stacks that are
allocated together with user mode queue MQDs. Setting
mqd_gfx9 to true maps the control stack pages as NC.
Here it was accidentally applied to SDMA MQDs,
which are allocated together with the HIQ MQD. Setting
the mqd_gfx9 to false avoids that.

Signed-off-by: default avatarEric Huang <jinhuieric.huang@amd.com>
Acked-by: default avatarYong Zhao <Yong.Zhao@amd.com>
Reviewed-by: default avatarFelix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent fd7d08ba

drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c

+1 −1
Original line number Diff line number Diff line
@@ -1734,7 +1734,7 @@ static int allocate_hiq_sdma_mqd(struct device_queue_manager *dqm) 


	retval = amdgpu_amdkfd_alloc_gtt_mem(dev->kgd, size,

		&(mem_obj->gtt_mem), &(mem_obj->gpu_addr),

		(void *)&(mem_obj->cpu_ptr), true);

		(void *)&(mem_obj->cpu_ptr), false);



	return retval;

}