On Tue, 11 Feb 2025 18:53:14 +0100 "Arnd Bergmann" <arnd@xxxxxxxx> wrote: ... > I think the way it actually works on mips is that all syscalls are > allowed in any task and the actual number identifies both the > ABI and the syscall. In some variant, the same is true on arm > (oabi/eabi) and x86-64 (64/x32), but oabi and x32 are both too > obsolete to put much work into them. IIRC x86-64 processes can also just make i386 system calls. Even switching to/from 64bit mode isn't privileged. David