int add_range(struct range *range, int az, int nr_range, u64 start, u64 end)
{
int add_range(struct range *range, int az, int nr_range, u64 start, u64 end)
{
common_start = max(range[i].start, start);
common_end = min(range[i].end, end);
common_start = max(range[i].start, start);
common_end = min(range[i].end, end);