From: Zhen Lei > Sent: 02 November 2022 08:49 > > kallsyms_seqs_of_names[] records the symbol index sorted by address, the > maximum value in kallsyms_seqs_of_names[] is the number of symbols. And > 2^24 = 16777216, which means that three bytes are enough to store the > index. This can help us save (1 * kallsyms_num_syms) bytes of memory. You can get the compiler to do the 'heavy lifting' for you. struct uint24 { unsigned int val24:24; } __attribute__((packed)); struct uint24 table[1024]; works fine. David - Registered Address Lakeside, Bramley Road, Mount Farm, Milton Keynes, MK1 1PT, UK Registration No: 1397386 (Wales)