From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from fanzine2.igalia.com (fanzine2.igalia.com [213.97.179.56]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 760BF168BD for ; Thu, 3 Sep 2026 00:07:41 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=213.97.179.56 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788394065; cv=none; b=twxYQye3nu7ROd10moTq4OZP8cuAQJ9BNLTGLNgv7n5WLaUmuae4TNPw1WiOX0UtAyu7sV7ro4/nmbN/wIgdWVl4iFvRQnqNz1QNmITStZQX+42pnKKeLaEC73I6bw8jLHv1kaI32SLs+vqNqPwigqozt3xe/jaMbYHd5Jfp9as= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788394065; c=relaxed/simple; bh=klWcWccjlsQzujJnnvFClpN+Yci0vG0vHnlylSzbLOc=; h=MIME-Version:Date:From:To:Cc:Subject:In-Reply-To:References: Message-ID:Content-Type; b=HKCN6/kV6izHyKiAC6L51CBLJxZoLnKjl7W0sqBLZbp79AOn5ap8aVHptnHQLPka37B66HAgc4TJ+ZR3q8JNErEPRYcML4STc/b2lkexIsnf0ddSygw5yiaGlqzataSrn8S15oJtFJutw3kpZH7RryXTg+F0B2X0BHjK0dKrjOw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=igalia.com; spf=pass smtp.mailfrom=igalia.com; dkim=pass (2048-bit key) header.d=igalia.com header.i=@igalia.com header.b=Lu3R+Nwe; arc=none smtp.client-ip=213.97.179.56 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=igalia.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=igalia.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=igalia.com header.i=@igalia.com header.b="Lu3R+Nwe" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=igalia.com; s=20170329; h=Content-Transfer-Encoding:Content-Type:Message-ID:Subject:Cc:To :From:Date:MIME-Version:From:Reply-To; bh=cmQEOzLtOK6G3QHIoxlsUO75VfltJ8r34O3qt0LsBwY=; b=Lu3R+Nwe9xNhYiSqjlmIy8VM9n xs/JIFHFwMmogdq8SHa/t4oYuVLRDGBgqGYD3CQZAwTMLrDJ50qyUhwkYM/DZ65eoGb2l2LsBHkM0 dzwK/TXD62oc9glyRER/Q+xxq94qpiLXRNYPSdrYZrmTjQJqCUd0M7DfgkuQLm7aujBmYjaRpGq8z eoNAu9gyzQyZ3Jve18b1Ro9whdIdsjptohjZDExoYwt26cC7D+a8qkW9YQby5hynDWRbtvSzxJ93I 6+dPTx4cxi3Yyajjto+3pJFXeYB9RjyDxolksiSMZO83tKSP7+V0PBomwu0DTaCP+na2cib84j3Qx QvlH8vFw==; Received: from maestria.local.igalia.com ([192.168.10.14] helo=mail.igalia.com) by fanzine2.igalia.com with esmtps (Cipher TLS1.3:ECDHE_SECP256R1__RSA_PSS_RSAE_SHA256__AES_256_GCM:256) (Exim) id 1x1uyy-00E6IP-4K; Thu, 03 Sep 2026 02:07:08 +0200 Received: from webmail.service.igalia.com ([192.168.21.45]) by mail.igalia.com with esmtp (Exim) id 1x1uyx-00GOWm-B9; Thu, 03 Sep 2026 02:07:07 +0200 Received: from localhost ([127.0.0.1] helo=webmail.igalia.com) by webmail.service.igalia.com with esmtp (Exim 4.98.2) (envelope-from ) id 1x1uyx-00000005maZ-18xr; Thu, 03 Sep 2026 02:07:07 +0200 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Date: Wed, 02 Sep 2026 21:07:07 -0300 From: Mauricio Faria de Oliveira To: Borislav Petkov Cc: Michael Matz , Richard Biener , Thomas Gleixner , Ingo Molnar , Dave Hansen , x86@kernel.org, "H. Peter Anvin" , Juergen Gross , Alexey Dobriyan , Boris Ostrovsky , Jan Beulich , Brian Gerst , kernel-dev@igalia.com, linux-kernel@vger.kernel.org, xen-devel@lists.xenproject.org Subject: Re: [PATCH v9 1/5] x86/boot: Remove "cc" clobber from memcmp() In-Reply-To: <20260903000132.GGapi43JjGh-8sj65Q@fat_crate.local> References: <20260822-pvh-kasan-inline-v9-0-e70ef3b75b6a@igalia.com> <20260822-pvh-kasan-inline-v9-1-e70ef3b75b6a@igalia.com> <20260902023129.GGapeKgVlL2WgHcJcb@fat_crate.local> <57b0d188-b256-bde4-43e6-99dae4f59d60@suse.de> <05896397667d66a2969259298bcebb7f@igalia.com> <20260903000132.GGapi43JjGh-8sj65Q@fat_crate.local> Message-ID: X-Sender: mfo@igalia.com Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Spam-Report: NO, Score=-2.1, Tests=ALL_TRUSTED=-3,BAYES_50=0.8,KAM_DMARC_NONE=0.125,KAM_DMARC_STATUS=0.005 X-Spam-Score: -20 X-Spam-Bar: -- On 2026-09-02 21:01, Borislav Petkov wrote: > On Wed, Sep 02, 2026 at 10:48:14AM -0300, Mauricio Faria de Oliveira wrote: >> Boris, I guess this may be added as clarification in the commit message. >> Would you prefer another version with it? > > Yeah, I'd actually prefer it in the code itself so that we can find it easier. > This file is as good as any. > > Something like this: > > /* > * Summarized explanation that "cc" clobbers don't have a meaning > * > */ > > and leave the "cc" clobber there but commented out: > > /* "cc" ... */ > > so that we can grep for it easier later. > > Thanks! Sure, will do in the next version. The rest of this series is OK to you? I can wait for further feedback and combine it with this change. Thanks! -- Mauricio