Received: by 10.223.176.5 with SMTP id f5csp3783195wra; Mon, 29 Jan 2018 19:44:10 -0800 (PST) X-Google-Smtp-Source: AH8x227xeHJc5AXJ+O2xu7n8Kcw8yxlGkKLXJCJUWrKmONOW91hujLNqyKqli0jMwIalVAnzYefS X-Received: by 2002:a17:902:8c87:: with SMTP id t7-v6mr10102096plo.205.1517283850466; Mon, 29 Jan 2018 19:44:10 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1517283850; cv=none; d=google.com; s=arc-20160816; b=d28l1KCRL4S0R1c1QplgTu619FRjOEtWSAGmZBDZjDyYeUScB1x8hDn376O6eW1S/6 WNvpFaNfRWc4W7SJ3qjlFQY1SlVqWBRqyh0YnrOxfj4vMNe3RznTwMFgKz7CsOOVewuX 5q2ALxem41b5jOuArVFjNJmGDTMsljeLGIuXT/4qNlNHqW5JC8eu4eBInUiJbKGTSWiB KISH9KTsop9N9IMGzpznDXLpePbAmgG6Zi8XxrWQ6Hl1PPfEBce3bVOFwgYBl4WEoXoh q7EmKVm2RVbWqMJAlIJeQQpj7vdExPs3L1X3hr0IxaxCj10CYLPa+DmVAQpq0rARtDhg oqhA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:user-agent:in-reply-to :content-disposition:mime-version:references:message-id:subject:cc :to:from:date:arc-authentication-results; bh=e90R8aY5h8ZYJ198rgcNM/ghVnEA8PU/ifuNOyz8REs=; b=ycxOBW36VM5X/96dWehStn5xo68tfFAFBLSF6Ruhhs/mfWrm4RtaXsv+JihPsXqElG V+9E9gsnSpGUmY0Px+Z3Tlvas2vQeBvYO4BKSVf5RCiPOdnx2WuDBQHeicPst2fkwKJB RJcAkYDimE2TIj2JupPFX6lHxKpVqqKF4aIammDLto/Od7KXESYNJnIzURGhCg9gp/Sw SPsalGGrKs6Kh2PJvsXPq0Ie3HsWKGhFn9mu8zN4L7H34meJU4banCOfETWr9EvNxGly yF3ouX8qJYU7M5W1QKmDwlthiLomP3E9vioPpPSrefcSwSqz/aSwXbm/endzi7RvVugG hajQ== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=redhat.com Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id p5-v6si315913plo.32.2018.01.29.19.43.56; Mon, 29 Jan 2018 19:44:10 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=redhat.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752658AbeA3Dnc (ORCPT + 99 others); Mon, 29 Jan 2018 22:43:32 -0500 Received: from mx1.redhat.com ([209.132.183.28]:43136 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752186AbeA3Dnb (ORCPT ); Mon, 29 Jan 2018 22:43:31 -0500 Received: from smtp.corp.redhat.com (int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 50A7485376; Tue, 30 Jan 2018 03:43:31 +0000 (UTC) Received: from treble (ovpn-120-158.rdu2.redhat.com [10.10.120.158]) by smtp.corp.redhat.com (Postfix) with SMTP id 6660918B4E; Tue, 30 Jan 2018 03:43:30 +0000 (UTC) Date: Mon, 29 Jan 2018 21:43:29 -0600 From: Josh Poimboeuf To: David Woodhouse Cc: Martin Steigerwald , Linus Torvalds , Linux Kernel Mailing List Subject: Re: Requirements for retpoline in Linux 4.15 (was: Re: Linux 4.15) Message-ID: <20180130034329.xulxk44ex2bxw7ob@treble> References: <1517219630.6624.120.camel@infradead.org> <5326624.8I3Ve3uUFt@merkaba> <5520835.tArHHOCcxE@merkaba> <1517225725.6624.136.camel@infradead.org> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <1517225725.6624.136.camel@infradead.org> User-Agent: Mutt/1.6.0.1 (2016-04-01) X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.25]); Tue, 30 Jan 2018 03:43:31 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Jan 29, 2018 at 11:35:25AM +0000, David Woodhouse wrote: > If they have explicit asm which has indirect jumps, that would still be > a problem. We just need to port objtool into the kernel and do it at > module load time, to check for that... :) Darnit, you sniffed out my April Fool's plan. -- Josh