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drm/amdkfd: change SDMA MQD memory type

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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: Eric Huang <jinhuieric.huang@amd.com>
Acked-by: Yong Zhao <Yong.Zhao@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Eric Huang 2020-02-26 14:13:51 -05:00 committed by Alex Deucher
parent fd7d08bad7
commit f2cc50cefd
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c
View file

@ -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;
}