[igt-dev] [PATCH] test/i915/gem_create: Skip the test if the PAT index is set on a non MTL device

[Yang, Fei]

On 12/07/2023 09:37, Andi Shyti wrote:
> If we try to set the PAT index on a device that is not a Meteor Lake, we expect an -ENODEV return value. But then, we forget to skip and soon after we assert on the return value being '0', forcing the error path.
> 
> Skip, as expected, in case the return value is either EINVAL or ENODEV, the latter for meteor lake devices.
> 
> Suggested-by: Tvrtko Ursulin <tvrtko.ursulin at linux.intel.com>
> Signed-off-by: Andi Shyti <andi.shyti at linux.intel.com>

Thanks for the fix.
Reviewed-by: Fei Yang <fei.yang at intel.com>

> Cc: Fei Yang <fei.yang at intel.com>
> Cc: Kamil Konieczny <kamil.konieczny at linux.intel.com>
> ---
>  tests/i915/gem_create.c | 23 +++++++++++++++++------
>  1 file changed, 17 insertions(+), 6 deletions(-)
> 
> diff --git a/tests/i915/gem_create.c b/tests/i915/gem_create.c index b7961d9ef2..4b00fe6aab 100644
> --- a/tests/i915/gem_create.c
> +++ b/tests/i915/gem_create.c
> @@ -668,14 +668,25 @@ static void create_ext_set_pat(int fd)
>  	ret = __gem_create_ext(fd, &size, 0, &handle, &setparam_pat.base);
>  
>  	/*
> -	 * With a valid PAT index specified, returning -EINVAL here
> -	 * indicates set_pat extension is not supported
> +	 * Currently the PAT index is supported only for Meteor Lake, so that
> +	 * we expect:
> +	 *
> +	 *  * -EINVAL if i915 does not support the PAT index, e.g. the kernel is
> +	 *    too old to have the PAT index supported.
> +	 *  * -ENODEV if we are trying to set the PAT index on a non Meteor Lake
> +	 *    platform.
> +	 *
> +	 * In both cases, though, the I915_GEM_CREATE_EXT_SET_PAT flag is not
> +	 * supported.
>  	 */
> -	if (ret == -EINVAL)
> -		igt_skip("I915_GEM_CREATE_EXT_SET_PAT is not supported\n");
> -	else if (!IS_METEORLAKE(devid))
> -		igt_assert_eq(ret, -ENODEV);
> +	igt_skip_on_f(ret == -EINVAL ||
> +		      (ret == -ENODEV && IS_METEORLAKE(devid)),
> +		      "I915_GEM_CREATE_EXT_SET_PAT is not supported\n");
>  
> +	/*
> +	 * This means that we are on a Meteor Lake and the PAT
> +	 * index is already supported by the running i915
> +	 */
>  	igt_assert(ret == 0);
>  
>  	/*
> --
> 2.40.1