1. the system call table of linux and minix are very different. posix specifies the minimum interface (and i don't think it specifies what is and what is not a

1. the system call table of linux and minix are very different. posix specifies the minimum interface (and i don't think it specifies what is and what is not a system call). linux has a lot more system calls than minix. the system call table itself changes between architectures under linux since... 2. linux duplicates the system call dispatch table for each architecture. check it out: http://lxr.linux.no/linux+v2.6.35/arch/x86/ia32/ia32entry.S#L506 http://lxr.linux.no/linux+v2.6.35/arch/x86/ia32/ia32entry.S#... vs http://lxr.linux.no/linux+v2.6.35/arch/avr32/kernel/syscall_table.S http://lxr.linux.no/linux+v2.6.35/arch/avr32/kernel/syscall_... whereas NetBSD has no such duplication. in fact, one complaint about the linux kernel is that it has too much per-architecture code. 3. who uses minix? the linux kernel is actually not too bad. ctags is your friend. i learnt on linux+netbsd, it's not really as bad as people make out.