[PATCH] drm/amdgpu: Fix unaligned memory copies

[Christian König]

Am 15.07.19 um 18:12 schrieb Alex Deucher:
> On Sat, Jul 13, 2019 at 2:43 AM Kuehling, Felix <Felix.Kuehling at amd.com> wrote:
>> When starting a new mm_node, the page_offset becomes 0.
>>
>> Signed-off-by: Felix Kuehling <Felix.Kuehling at amd.com>
> Reviewed-by: Alex Deucher <alexander.deucher at amd.com>

Reviewed-by: Christian König <christian.koenig at amd.com>

>
>> ---
>>   drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | 2 ++
>>   1 file changed, 2 insertions(+)
>>
>> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
>> index 37d9a3b09946..d0f6c23ec7cf 100644
>> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
>> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
>> @@ -386,6 +386,7 @@ int amdgpu_ttm_copy_mem_to_mem(struct amdgpu_device *adev,
>>                          src_node_start = amdgpu_mm_node_addr(src->bo, ++src_mm,
>>                                                               src->mem);
>>                          src_node_size = (src_mm->size << PAGE_SHIFT);
>> +                       src_page_offset = 0;
>>                  } else {
>>                          src_node_start += cur_size;
>>                          src_page_offset = src_node_start & (PAGE_SIZE - 1);
>> @@ -395,6 +396,7 @@ int amdgpu_ttm_copy_mem_to_mem(struct amdgpu_device *adev,
>>                          dst_node_start = amdgpu_mm_node_addr(dst->bo, ++dst_mm,
>>                                                               dst->mem);
>>                          dst_node_size = (dst_mm->size << PAGE_SHIFT);
>> +                       dst_page_offset = 0;
>>                  } else {
>>                          dst_node_start += cur_size;
>>                          dst_page_offset = dst_node_start & (PAGE_SIZE - 1);
>> --
>> 2.17.1
>>
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