BOOTSTKSZ 96 include/arm/syspage.h #define BOOTSTKTOP (BOOTSTK + BOOTSTKSZ) BOOTSTKSZ 81 include/ppc/syspage.h #define BOOTSTKTOP (BOOTSTK + BOOTSTKSZ) BOOTSTKSZ 78 include/x86/syspage.h #define BOOTSTKTOP (BOOTSTK + BOOTSTKSZ)