From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.3 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS,USER_AGENT_MUTT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 73544C43381 for ; Sun, 10 Mar 2019 13:13:05 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 3E172207E0 for ; Sun, 10 Mar 2019 13:13:05 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="W4w6Ytqu" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726559AbfCJNND (ORCPT ); Sun, 10 Mar 2019 09:13:03 -0400 Received: from bombadil.infradead.org ([198.137.202.133]:53248 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725828AbfCJNND (ORCPT ); Sun, 10 Mar 2019 09:13:03 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20170209; h=In-Reply-To:Content-Type:MIME-Version :References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id: List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=57HnqGhREXi8qMK38desgY/Cw4GhXoqjasyjZAWPzwU=; b=W4w6YtquAr8OTg7R1aEVA22a8 r+WOfeSxRTIXoLPSsFJ2v8oBsBYlEa7Egz3poAjmkrXnD/Mc4fCx3/H5Wh0pa+sKeLvok8u4pRql1 j8mkIIzx3bFXdt7uopGaW5avt+KN9VNv4l/E7jYlc/8IfHU4Sf0LZcbHvJ2VLaeMdCSfdJcD3NVBq PZH/+FH+x+gYwwKsc75aZKZ2ODBxbHkwaVKY8hIFyIuQhoOoZAHkmO91Rw6qe5+HGDbvKF52sVAsL dGUPTK8QmqrtZsgV7utXQsYcloDhGrTQrgtSDhiruIczEJ5Dyd2lgN6k3Y/1FQ0dB9nbOUYelNL0h mu0xHu+Vw==; Received: from [188.207.104.17] (helo=worktop.programming.kicks-ass.net) by bombadil.infradead.org with esmtpsa (Exim 4.90_1 #2 (Red Hat Linux)) id 1h2yG5-0006p3-5Y; Sun, 10 Mar 2019 13:12:53 +0000 Received: by worktop.programming.kicks-ass.net (Postfix, from userid 1000) id 1F651981BBE; Sun, 10 Mar 2019 14:12:51 +0100 (CET) Date: Sun, 10 Mar 2019 14:12:51 +0100 From: Peter Zijlstra To: Josh Poimboeuf Cc: torvalds@linux-foundation.org, tglx@linutronix.de, hpa@zytor.com, julien.thierry@arm.com, will.deacon@arm.com, luto@amacapital.net, mingo@kernel.org, catalin.marinas@arm.com, james.morse@arm.com, valentin.schneider@arm.com, brgerst@gmail.com, luto@kernel.org, bp@alien8.de, dvlasenk@redhat.com, linux-kernel@vger.kernel.org, dvyukov@google.com, rostedt@goodmis.org Subject: Re: [PATCH 19/20] objtool: uaccess PUSHF/POPF support Message-ID: <20190310131251.GJ2482@worktop.programming.kicks-ass.net> References: <20190307114511.870090179@infradead.org> <20190307115200.784815194@infradead.org> <20190308211122.wx34kyixd64do2ep@treble> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20190308211122.wx34kyixd64do2ep@treble> User-Agent: Mutt/1.10.1 (2018-07-13) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Mar 08, 2019 at 03:11:22PM -0600, Josh Poimboeuf wrote: > On Thu, Mar 07, 2019 at 12:45:30PM +0100, Peter Zijlstra wrote: > > Add PUSHF / POPF state.uaccess restore logic. > > > > XXX: should possibly be merged with the previous patch such that KASAN > > doesn't explode in between. Split for review. > > Needs more description -- namely, what and why. See patch 8. This really should be folded back in the previous patch, but it is easier to look at without all that mixed in.