On Tue, 11 Feb 2025 18:53:14 +0100 "Arnd Bergmann" <[email protected]> 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
