intel_sseu_get_hsw_subslices
unsigned int dev_subslice_mask = intel_sseu_get_hsw_subslices(device, 0);
intel_sseu_get_hsw_subslices(const struct sseu_dev_info *sseu, u8 slice);
subslice = ffs(intel_sseu_get_hsw_subslices(sseu, slice));
subslice = __ffs(intel_sseu_get_hsw_subslices(sseu, 0));
value = intel_sseu_get_hsw_subslices(sseu, 0);