Re: [PATCH libdrm] tests/amdgpu: add unaligned VM test

["Zhang, Jerry (Junwei)" <Jerry.Zhang-5C7GfCeVMHo@public.gmane.org>]

On 09/10/2018 02:04 AM, Christian König wrote:
> Make a VM mapping which is as unaligned as possible.

Is it going to test unaligned address between BO allocation and BO mapping
and skip huge page mapping?

>
> Signed-off-by: Christian König <christian.koenig@amd.com>
> ---
>   tests/amdgpu/vm_tests.c | 45 ++++++++++++++++++++++++++++++++++++++++++++-
>   1 file changed, 44 insertions(+), 1 deletion(-)
>
> diff --git a/tests/amdgpu/vm_tests.c b/tests/amdgpu/vm_tests.c
> index 7b6dc5d6..fada2987 100644
> --- a/tests/amdgpu/vm_tests.c
> +++ b/tests/amdgpu/vm_tests.c
> @@ -31,8 +31,8 @@ static  amdgpu_device_handle device_handle;
>   static  uint32_t  major_version;
>   static  uint32_t  minor_version;
>
> -
>   static void amdgpu_vmid_reserve_test(void);
> +static void amdgpu_vm_unaligned_map(void);
>
>   CU_BOOL suite_vm_tests_enable(void)
>   {
> @@ -84,6 +84,7 @@ int suite_vm_tests_clean(void)
>
>   CU_TestInfo vm_tests[] = {
>   	{ "resere vmid test",  amdgpu_vmid_reserve_test },
> +	{ "unaligned map",  amdgpu_vm_unaligned_map },
>   	CU_TEST_INFO_NULL,
>   };
>
> @@ -167,3 +168,45 @@ static void amdgpu_vmid_reserve_test(void)
>   	r = amdgpu_cs_ctx_free(context_handle);
>   	CU_ASSERT_EQUAL(r, 0);
>   }
> +
> +static void amdgpu_vm_unaligned_map(void)
> +{
> +	const uint64_t map_size = (4ULL << 30) - (2 << 12);
> +	struct amdgpu_bo_alloc_request request = {};
> +	amdgpu_bo_handle buf_handle;
> +	amdgpu_va_handle handle;
> +	uint64_t vmc_addr;
> +	int r;
> +
> +	request.alloc_size = 4ULL << 30;
> +	request.phys_alignment = 4096;
> +	request.preferred_heap = AMDGPU_GEM_DOMAIN_VRAM;
> +	request.flags = AMDGPU_GEM_CREATE_NO_CPU_ACCESS;
> +
> +	r = amdgpu_bo_alloc(device_handle, &request, &buf_handle);
> +	/* Don't let the test fail if the device doesn't have enough VRAM */

We may print some info to the console here.

Regards,
Jerry

> +	if (r)
> +		return;
> +
> +	r = amdgpu_va_range_alloc(device_handle, amdgpu_gpu_va_range_general,
> +				  4ULL << 30, 1ULL << 30, 0, &vmc_addr,
> +				  &handle, 0);
> +	CU_ASSERT_EQUAL(r, 0);
> +	if (r)
> +		goto error_va_alloc;
> +
> +	vmc_addr += 1 << 12;
> +
> +	r = amdgpu_bo_va_op(buf_handle, 0, map_size, vmc_addr, 0,
> +			    AMDGPU_VA_OP_MAP);
> +	CU_ASSERT_EQUAL(r, 0);
> +	if (r)
> +		goto error_va_alloc;
> +
> +	amdgpu_bo_va_op(buf_handle, 0, map_size, vmc_addr, 0,
> +			AMDGPU_VA_OP_UNMAP);
> +
> +error_va_alloc:
> +	amdgpu_bo_free(buf_handle);
> +
> +}
>
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