linux-kernel - Re: [PATCH] x86/irqflags: Force a register output in native_save

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: Windows password security audit tool. GUI, reports in PDF.

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

Message-ID: <CANn89iJ+HKXRn7qF4KrT6gghw6CwWcsvoj8Scw17CkCqhGbk=A@mail.gmail.com>
Date: Fri, 19 Dec 2025 09:35:44 +0100
From: Eric Dumazet <edumazet@...gle.com>
To: Uros Bizjak <ubizjak@...il.com>
Cc: Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>, 
	Dave Hansen <dave.hansen@...ux.intel.com>, x86@...nel.org, 
	"H . Peter Anvin" <hpa@...or.com>, linux-kernel <linux-kernel@...r.kernel.org>, 
	Eric Dumazet <eric.dumazet@...il.com>
Subject: Re: [PATCH] x86/irqflags: Force a register output in native_save_fl()

On Thu, Dec 18, 2025 at 6:41 PM Uros Bizjak <ubizjak@...il.com> wrote:
>
>

>
> You should define and use something like ASM_INPUT_RM macro
> (ASM_OUTPUT_RM ?) instead to avoid penalizing GCC. Please see
> include/linux/compiler-clang.h.

This is a possibility indeed, thanks.