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=-1.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED autolearn=no 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 1078CC38A24 for ; Thu, 7 May 2020 18:05:54 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id DC2B22063A for ; Thu, 7 May 2020 18:05:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1588874753; bh=t12honBDppcMtC39atYWosMLZLOq8/S52nAqPhOENKc=; h=References:In-Reply-To:From:Date:Subject:To:Cc:List-ID:From; b=NHKZzRcdgZtJesRTwSX+tc1jAWK3oVr/7UG0Sa+xqoIJ7L2nvUXAMBT5xPq6gbiiU Rpi0MbKiZIL/vRrlSEU41ysQWXi4ZBqV09t2SeEB0ICIf9RgYamxSoSH8gdyWzv9io S+jjgLd1Jqg3zp2FbNPrpz9YTK2yd36ITHcRrM9I= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728385AbgEGSFw (ORCPT ); Thu, 7 May 2020 14:05:52 -0400 Received: from mail.kernel.org ([198.145.29.99]:60348 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726514AbgEGSFw (ORCPT ); Thu, 7 May 2020 14:05:52 -0400 Received: from mail-wm1-f41.google.com (mail-wm1-f41.google.com [209.85.128.41]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 9701E21835 for ; Thu, 7 May 2020 18:05:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1588874751; bh=t12honBDppcMtC39atYWosMLZLOq8/S52nAqPhOENKc=; h=References:In-Reply-To:From:Date:Subject:To:Cc:From; b=CYKeVueYxchvPKyGrurGV8FrOlxvmOSuZ394PWpt/pK8cf4nJd/ec415nJunoTwNQ KghxOCLsI8tANKadlLuFvkGr27Yl7iVut34uV+zAVK9rHvtZEDe32TnhpXc665HmMb TpiH84isSTMk7gdNCZlPDnlflnKyXMPVvGuZlomA= Received: by mail-wm1-f41.google.com with SMTP id u16so7839297wmc.5 for ; Thu, 07 May 2020 11:05:51 -0700 (PDT) X-Gm-Message-State: AGi0PuYIsWtR9CgW/uQkpcWH6tM8LD3Hw4WPL7RJrBcKLSfCkd5dtPt7 qDIjm0rn6DaItjX2CivwvD8XSlCrsX3HgfFFABWAFQ== X-Google-Smtp-Source: APiQypJa73RTPZHUBSMpbX8CdKJ1utp8jAStgkb82bfQlXTNFAP1uBSn3nPVJ4rGyY0p2guQJEgHVCXvidBH+PyC8/4= X-Received: by 2002:a1c:9989:: with SMTP id b131mr11408000wme.176.1588874750143; Thu, 07 May 2020 11:05:50 -0700 (PDT) MIME-Version: 1.0 References: <20200505131602.633487962@linutronix.de> In-Reply-To: <20200505131602.633487962@linutronix.de> From: Andy Lutomirski Date: Thu, 7 May 2020 11:05:37 -0700 X-Gmail-Original-Message-ID: Message-ID: Subject: Re: [patch V4 part 1 00/36] x86/entry: Entry/exception code rework, preparatory patches To: Thomas Gleixner Cc: LKML , X86 ML , "Paul E. McKenney" , Andy Lutomirski , Alexandre Chartre , Frederic Weisbecker , Paolo Bonzini , Sean Christopherson , Masami Hiramatsu , Petr Mladek , Steven Rostedt , Joel Fernandes , Boris Ostrovsky , Juergen Gross , Brian Gerst , Mathieu Desnoyers , Josh Poimboeuf , Will Deacon Content-Type: text/plain; charset="UTF-8" Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, May 5, 2020 at 7:13 AM Thomas Gleixner wrote: > > Folks! > > This is the hopefully final version of the rework of the entry and > exception code to ensure that instrumentation cannot touch the fragile > parts of the hardware induced entry and exception code trainwreck. It > further ensures correctness vs. RCU and moves quite some code out of the > assembly code into C. Other than the minor comments I sent, part 1 all looks good to me.