Yes, I have already tested it.
Best wishes
Emily Deng
>-----Original Message-----
>From: Christian König <ckoenig.leichtzumerken@xxxxxxxxx>
>Sent: Wednesday, September 25, 2019 5:36 PM
>To: Deng, Emily <Emily.Deng@xxxxxxx>; amd-gfx@xxxxxxxxxxxxxxxxxxxxx
>Subject: Re: [PATCH] drm7amdgpu: once more fix
>amdgpu_bo_create_kernel_at
>
>Hi Emily,
>
>have you also tested this? I don't have the hardware to test it so that would
>be rather nice to have.
>
>Thanks,
>Christian.
>
>Am 25.09.19 um 11:31 schrieb Deng, Emily:
>> Reviewed-by: Emily Deng <Emily.Deng@xxxxxxx>
>>
>>> -----Original Message-----
>>> From: Christian König <ckoenig.leichtzumerken@xxxxxxxxx>
>>> Sent: Tuesday, September 24, 2019 7:56 PM
>>> To: Deng, Emily <Emily.Deng@xxxxxxx>; amd-gfx@xxxxxxxxxxxxxxxxxxxxx
>>> Subject: [PATCH] drm7amdgpu: once more fix
>amdgpu_bo_create_kernel_at
>>>
>>> When CPU access is needed we should tell that to
>>> amdgpu_bo_create_reserved() or otherwise the access is denied later on.
>>>
>>> Signed-off-by: Christian König <christian.koenig@xxxxxxx>
>>> ---
>>> drivers/gpu/drm/amd/amdgpu/amdgpu_object.c | 9 ++++++---
>>> 1 file changed, 6 insertions(+), 3 deletions(-)
>>>
>>> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
>>> b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
>>> index 12d2adcdf14e..f10b6175e20c 100644
>>> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
>>> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
>>> @@ -369,7 +369,7 @@ int amdgpu_bo_create_kernel_at(struct
>>> amdgpu_device *adev,
>>> size = ALIGN(size, PAGE_SIZE);
>>>
>>> r = amdgpu_bo_create_reserved(adev, size, PAGE_SIZE, domain,
>bo_ptr,
>>> - NULL, NULL);
>>> + NULL, cpu_addr);
>>> if (r)
>>> return r;
>>>
>>> @@ -377,12 +377,15 @@ int amdgpu_bo_create_kernel_at(struct
>>> amdgpu_device *adev,
>>> * Remove the original mem node and create a new one at the
>request
>>> * position.
>>> */
>>> + if (cpu_addr)
>>> + amdgpu_bo_kunmap(*bo_ptr);
>>> +
>>> + ttm_bo_mem_put(&(*bo_ptr)->tbo, &(*bo_ptr)->tbo.mem);
>>> +
>>> for (i = 0; i < (*bo_ptr)->placement.num_placement; ++i) {
>>> (*bo_ptr)->placements[i].fpfn = offset >> PAGE_SHIFT;
>>> (*bo_ptr)->placements[i].lpfn = (offset + size) >> PAGE_SHIFT;
>>> }
>>> -
>>> - ttm_bo_mem_put(&(*bo_ptr)->tbo, &(*bo_ptr)->tbo.mem);
>>> r = ttm_bo_mem_space(&(*bo_ptr)->tbo, &(*bo_ptr)->placement,
>>> &(*bo_ptr)->tbo.mem, &ctx);
>>> if (r)
>>> --
>>> 2.14.1
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