linux-kernel - Re: [PATCH 1/2] clang: work around asm output constraint problems

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Message-ID: <CANn89iL9wZtjxfgwTWLDAaxwEQQ=6BXfCjYUDs65SaK5k8S3Cg@mail.gmail.com>
Date: Sun, 21 Dec 2025 04:46:28 +0100
From: Eric Dumazet <edumazet@...gle.com>
To: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>, 
	Dave Hansen <dave.hansen@...ux.intel.com>, Uros Bizjak <ubizjak@...il.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 1/2] clang: work around asm output constraint problems

On Sat, Dec 20, 2025 at 11:33 PM Linus Torvalds
<torvalds@...ux-foundation.org> wrote:
>
> On Fri, 19 Dec 2025 at 03:20, Eric Dumazet <edumazet@...gle.com> wrote:
> >
> > Add ASM_OUTPUT_RM so that we can replace "=rm" constraint
> > where it maters for clang, while not penalizing gcc.
>
> I'll apply this - and the use case patch in 2/2 - directly, but I'll
> just group them all together the same wary the input side (RM/G) is
> already just done right next to each other.

SGTM, thanks Linus.