linux-kernel - Re: [tip: x86/core] x86/cpufeatures: Generate the <asm/cpufeaturemasks.h> header based on build config

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <CAHk-=wi8h2fNpPBYakOMGhCk=pBSAQoLv=YG4KiTy45SZSQe7w@mail.gmail.com>
Date: Fri, 28 Mar 2025 17:22:03 -0700
From: Linus Torvalds <torvalds@...ux-foundation.org>
To: Jakub Kicinski <kuba@...nel.org>, Masahiro Yamada <masahiroy@...nel.org>
Cc: "H. Peter Anvin (Intel)" <hpa@...or.com>, Michael Kelley <mhklinux@...look.com>, 
	"Xin Li (Intel)" <xin@...or.com>, "Borislav Petkov (AMD)" <bp@...en8.de>, Ingo Molnar <mingo@...nel.org>, 
	Nikolay Borisov <nik.borisov@...e.com>, "x86@...nel.org" <x86@...nel.org>, 
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [tip: x86/core] x86/cpufeatures: Generate the <asm/cpufeaturemasks.h>
 header based on build config

On Fri, 28 Mar 2025 at 17:14, Linus Torvalds
<torvalds@...ux-foundation.org> wrote:
>
> So I think the real fix is something like this ENTIRELY UNTESTED
> patch.  Whitespace-damaged again to make sure people don't apply this
> mindlessly, it needs more thought:

.. and that ended up being even more whitespace-damaged than I meant
to make it, because it also line-wrapped.

Oh well. Not pretty, but I hope people still get the idea.

And I just actually tried doing a build after touching the .config
file, and it did seem to work.

But since I had _also_ messed with the config file on purpose earlier,
I'm not sure I'm actually testing the thing the networking builds
trigger. So I might be entirely missing something.

Adding Masahiro to the cc, so that somebody competent can actually
check my thinking.

Masahiro, see the complaint (and my reply) in

    https://lore.kernel.org/all/20250328162311.08134fa6@kernel.org/

for background...

          Linus