Re: [PATCH -tip 2/2] x86/hweight: Use POPCNT when available with X86_NATIVE_CPU option
From: Borislav Petkov
Date: Sun Mar 30 2025 - 13:32:13 EST
On Sun, Mar 30, 2025 at 05:15:16PM +0200, Uros Bizjak wrote:
> You missed this part:
>
> --q--
> ... where there is no need for an entry in the .altinstr_replacement
Not really - .altinstr* memory gets jettisoned after boot.
> section, shrinking all text sections by 9476 bytes:
So if anything, this saves a whopping ~9K disk space and makes hweight* an
unreadable mess.
So no, thanks.
--
Regards/Gruss,
Boris.
https://people.kernel.org/tglx/notes-about-netiquette