[Intel-gfx] [PATCH 2/2] drm/i915/selftests: tweak the misaligned_case

[Das, Nirmoy]

LGTM Reviewed-by: Nirmoy Das <nirmoy.das at intel.com>

On 4/6/2022 9:30 PM, Matthew Auld wrote:
> The compact-pt layout restrictions should only apply to the ppGTT. Also
> make this play nice on platforms that only have the 64K GTT restriction,
> and not the compact-pt thing.
>
> Signed-off-by: Matthew Auld <matthew.auld at intel.com>
> Cc: Thomas Hellström <thomas.hellstrom at linux.intel.com>
> Cc: Nirmoy Das <nirmoy.das at linux.intel.com>
> ---
>   drivers/gpu/drm/i915/selftests/i915_gem_gtt.c | 12 +++++++++---
>   1 file changed, 9 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/selftests/i915_gem_gtt.c b/drivers/gpu/drm/i915/selftests/i915_gem_gtt.c
> index bccc49a8ab5e..8633bec18fa7 100644
> --- a/drivers/gpu/drm/i915/selftests/i915_gem_gtt.c
> +++ b/drivers/gpu/drm/i915/selftests/i915_gem_gtt.c
> @@ -1112,10 +1112,16 @@ static int misaligned_case(struct i915_address_space *vm, struct intel_memory_re
>   	expected_vma_size = round_up(size, 1 << (ffs(vma->resource->page_sizes_gtt) - 1));
>   	expected_node_size = expected_vma_size;
>   
> -	if (NEEDS_COMPACT_PT(vm->i915) && i915_gem_object_is_lmem(obj)) {
> -		/* compact-pt should expand lmem node to 2MB */
> +	if (HAS_64K_PAGES(vm->i915) && i915_gem_object_is_lmem(obj)) {
> +		/*
> +		 * The compact-pt should expand lmem node to 2MB for the ppGTT,
> +		 * for all other cases we should only expect 64K.
> +		 */
>   		expected_vma_size = round_up(size, I915_GTT_PAGE_SIZE_64K);
> -		expected_node_size = round_up(size, I915_GTT_PAGE_SIZE_2M);
> +		if (NEEDS_COMPACT_PT(vm->i915) && !i915_is_ggtt(vm))
> +			expected_node_size = round_up(size, I915_GTT_PAGE_SIZE_2M);
> +		else
> +			expected_node_size = round_up(size, I915_GTT_PAGE_SIZE_64K);
>   	}
>   
>   	if (vma->size != expected_vma_size || vma->node.size != expected_node_size) {