Re: [PATCH v4 seccomp 3/5] x86: Enable seccomp architecture tracking

From: YiFei Zhu
Date: Fri Oct 09 2020 - 14:36:10 EST


On Fri, Oct 9, 2020 at 12:25 PM Andy Lutomirski <luto@xxxxxxxxxxxxxx> wrote:
> Is the idea that any syscall that's out of range for this (e.g. all of
> the x32 syscalls) is unoptimized? I'm okay with this, but I think it
> could use a comment.

Yes, any syscall number that is out of range is unoptimized. Where do
you think I should put a comment? seccomp_cache_check_allow_bitmap
above `if (unlikely(syscall_nr < 0 || syscall_nr >= bitmap_size))`,
with something like "any syscall number out of range is unoptimized"?

YiFei Zhu