On Sun, Jun 23, 2024 at 12:03 AM Shung-Hsi Yu <shung-hsi.yu@xxxxxxxx> wrote:
>
> signed_add*_overflows() was added back when there was no overflow-check
> helper. With the introduction of such helpers in commit f0907827a8a91
> ("compiler.h: enable builtin overflow checkers and add fallback code"), we
> can drop signed_add*_overflows() in kernel/bpf/verifier.c and use the
> generic check_add_overflow() instead.
>
> This will make future refactoring easier, and possibly taking advantage of
> compiler-emitted hardware instructions that efficiently implement these
> checks.
>
> Signed-off-by: Shung-Hsi Yu <shung-hsi.yu@xxxxxxxx>
> ---
> shung-hsi.yu: maybe there's a better name instead of {min,max}_cur, but
> I coudln't come up with one.
Just smin/smax without _cur suffix ?
What is the asm before/after ?
