amdgpu_bo_kptr
info->vaddr = (vm_offset_t)amdgpu_bo_kptr(abo);
info->screen_base = amdgpu_bo_kptr(abo);
kptr = amdgpu_bo_kptr(bo);
*ptr = amdgpu_bo_kptr(bo);
void *amdgpu_bo_kptr(struct amdgpu_bo *bo);
pe += (unsigned long)amdgpu_bo_kptr(bo);