Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::3:2 as permitted sender) client-ip=2620:137:e000::3:2;
Content-Type: text/plain;
        charset=us-ascii
Mime-Version: 1.0 (Mac OS X Mail 16.0 \(3731.700.6\))
Subject: Re: Missing clobber on alternative use on Linux UM 32-bit
From:   Nadav Amit <nadav.amit@gmail.com>
In-Reply-To: <41cac2e7ad9341259f356e1b3cf5f418@AcuMS.aculab.com>
Date:   Mon, 6 Nov 2023 13:33:08 +0200
Cc:     Anton Ivanov <anton.ivanov@kot-begemot.co.uk>,
        Richard Weinberger <richard@nod.at>,
        "linux-um@lists.infradead.org" <linux-um@lists.infradead.org>,
        Thomas Gleixner <tglx@linutronix.de>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        Peter Zijlstra <peterz@infradead.org>
Content-Transfer-Encoding: 7bit
Message-Id: <9D03E2C9-0571-418E-9075-6DD39DBA724F@gmail.com>
References: <24BD0906-C6FE-499C-9A4A-00C56E6EE84A@gmail.com>
 <a55f6941-ddf6-2355-271d-5ed0db5a2a62@kot-begemot.co.uk>
 <1616BF59-5C18-46C7-86AB-92604B683652@gmail.com>
 <41cac2e7ad9341259f356e1b3cf5f418@AcuMS.aculab.com>
To:     David Laight <David.Laight@aculab.com>
Precedence: bulk


> On Nov 5, 2023, at 5:47 PM, David Laight <David.Laight@aculab.com> wrote:
> 
> gcc always assumes that inline asm changes "cc" - there is no need
> to add a 'clobber' for it.

Thanks. I was unaware of this behavior.