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=-0.6 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS 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 213CFC433E0 for ; Thu, 28 May 2020 20:24:36 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id F141F207BC for ; Thu, 28 May 2020 20:24:35 +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="MhXBQfag" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2407083AbgE1UYe (ORCPT ); Thu, 28 May 2020 16:24:34 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41120 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2406986AbgE1UYc (ORCPT ); Thu, 28 May 2020 16:24:32 -0400 Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2607:7c80:54:e::133]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 451ECC08C5C6 for ; Thu, 28 May 2020 13:24:32 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20170209; h=Subject:Cc:To:From:Date:Message-ID: Sender:Reply-To:MIME-Version:Content-Type:Content-Transfer-Encoding: Content-ID:Content-Description:In-Reply-To:References; bh=ZlitLrg58PjBubp1jZcu8kKsgkfU14EybJiixuLj3Ro=; b=MhXBQfags+orS9/WAp5Xvw/ePk OQ4klb6NH0QGlt5FJXhVfYtqdSoLIBNrTL+HxO5pKmYJICdp2esm+TPpyx2ZhPmkUqDZoYF68LAuR ueENZp8g3aa6gjzLMfLlL+cx7YwFQLBiMmJBL4tIQ++5JeM7kv4rv9w2eSRkI0MqUIPwsmzyWiDQU 3QDszMg9naP7XRXVHABBJTjHLT/mK5bFxcQLl+HTFwUT8ZL4vukb4YKGw84BLczi8pw6H2vrSSege GSsIbNIqQIsjI/IGdTD5naI81QvfwIUDTKCaC1O4UcSQNsRYC4JiDEBsLU0ZlSgcsI9O1/qNrqt9A pozzj2mA==; Received: from j217100.upc-j.chello.nl ([24.132.217.100] helo=noisy.programming.kicks-ass.net) by bombadil.infradead.org with esmtpsa (Exim 4.92.3 #3 (Red Hat Linux)) id 1jeP4j-0005Zn-72; Thu, 28 May 2020 20:24:25 +0000 Received: from hirez.programming.kicks-ass.net (hirez.programming.kicks-ass.net [192.168.1.225]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by noisy.programming.kicks-ass.net (Postfix) with ESMTPS id D6868301205; Thu, 28 May 2020 22:24:22 +0200 (CEST) Received: by hirez.programming.kicks-ass.net (Postfix, from userid 0) id CABFA203C05AF; Thu, 28 May 2020 22:24:22 +0200 (CEST) Message-ID: <20200528201937.038455891@infradead.org> User-Agent: quilt/0.66 Date: Thu, 28 May 2020 22:19:37 +0200 From: Peter Zijlstra To: tglx@linutronix.de, luto@amacapital.net, peterz@infradead.org Cc: linux-kernel@vger.kernel.org, x86@kernel.org, Lai Jiangshan , sean.j.christopherson@intel.com, andrew.cooper3@citrix.com, daniel.thompson@linaro.org Subject: [PATCH 0/6] x86/entry: disallow #DB more Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org These patches disallow #DB during NMI/#MC and allow removing a lot of fugly code. Patch #6 should probably wait until we've got the KGDB situation sorted because applying that makes a bad situation worse.