GET_LOW_SLICE_INDEX
index = GET_LOW_SLICE_INDEX(addr);
low_slices = (1u << (GET_LOW_SLICE_INDEX(mend) + 1))
- (1u << GET_LOW_SLICE_INDEX(start));
slice = GET_LOW_SLICE_INDEX(addr);
index = GET_LOW_SLICE_INDEX(addr);
ret->low_slices = (1u << (GET_LOW_SLICE_INDEX(mend) + 1))
- (1u << GET_LOW_SLICE_INDEX(start));