[PATCH i-g-t v2 2/3] tests/intel/gem_mmap_offset: Introduce mmap-boundaries test

[Andi Shyti]

Hi Krzysztof,

few nitpicks.

On Wed, Aug 21, 2024 at 03:59:42PM +0200, Krzysztof Niemiec wrote:
> Introduce the mmap-boundaries test, which checks if mmap() correctly
> calculates memory boundaries during the mapping.
> 
> Signed-off-by: Krzysztof Niemiec <krzysztof.niemiec at intel.com>
> ---
>  tests/intel/gem_mmap_offset.c | 37 +++++++++++++++++++++++++++++++++++
>  1 file changed, 37 insertions(+)
> 
> diff --git a/tests/intel/gem_mmap_offset.c b/tests/intel/gem_mmap_offset.c
> index 80ac8dc01..73adaaa98 100644
> --- a/tests/intel/gem_mmap_offset.c
> +++ b/tests/intel/gem_mmap_offset.c
> @@ -63,6 +63,7 @@
>   * SUBTEST: perf
>   * SUBTEST: pf-nonblock
>   * SUBTEST: ptrace
> + * SUBTEST: mmap-boundaries

I think these are sorted alphabetically.

>   *
>   */
>  
> @@ -989,6 +990,34 @@ static void partial_remap(int i915, struct gem_memory_region *r)
>  	gem_close(i915, handle);
>  }
>  
> +/* This test's failure is detected by checking the dmesg. */
> +

please remove this blank line.

> +static void test_mmap_boundaries(int i915, struct gem_memory_region *r)
> +{
> +	const uint64_t map_size = SZ_128M - SZ_512K;
> +	uint32_t handle;
> +
> +	handle = gem_create_in_memory_region_list(i915, SZ_2G, 0, &r->ci, 1);
> +	make_resident(i915, 0, handle);
> +
> +	for_each_mmap_offset_type(i915, t) {
> +		uint8_t *map;
> +
> +		map = __mmap_offset(i915, handle, 0, map_size,
> +				    PROT_READ | PROT_WRITE, t->type);
> +

Please, remove this blank line.

Rest is good. With the above:

Reviewed-by: Andi Shyti <andi.shyti at linux.intel.com>

Thanks,
Andi


> +		if (!map)
> +			continue;
> +
> +		memset(map + map_size - SZ_1K, 0xab, SZ_1K);
> +		for (uint64_t i = 0; i < SZ_1K; i++)
> +			igt_assert_eq(map[map_size - SZ_1K + i], 0xab);
> +
> +		munmap(map, map_size);
> +	}
> +	gem_close(i915, handle);
> +}
> +
>  static int mmap_gtt_version(int i915)
>  {
>  	int gtt_version = -1;
> @@ -1082,6 +1111,14 @@ igt_main
>  	igt_subtest_f("blt-coherency")
>  		blt_coherency(i915);
>  
> +	igt_describe("Check for proper boundary calculation during mmap");
> +	igt_subtest_with_dynamic("mmap-boundaries") {
> +		for_each_memory_region(r, i915) {
> +			igt_dynamic_f("%s", r->name)
> +				test_mmap_boundaries(i915, r);
> +		}
> +	}
> +
>  	igt_fixture {
>  		drm_close_driver(i915);
>  	}
> -- 
> 2.45.2