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=-3.8 required=3.0 tests=BAYES_00,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 91348C433E0 for ; Tue, 11 Aug 2020 09:21:19 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 6FF2A2076B for ; Tue, 11 Aug 2020 09:21:19 +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="uwpIB3Nt" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728422AbgHKJVS (ORCPT ); Tue, 11 Aug 2020 05:21:18 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59888 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728355AbgHKJVR (ORCPT ); Tue, 11 Aug 2020 05:21:17 -0400 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4275AC06174A for ; Tue, 11 Aug 2020 02:21:17 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=In-Reply-To:Content-Transfer-Encoding: Content-Type:MIME-Version:References:Message-ID:Subject:Cc:To:From:Date: Sender:Reply-To:Content-ID:Content-Description; bh=hm4JdNf7SM0QMQOFD/GVqjWP012kTgNDcYqFU8vfr/U=; b=uwpIB3NtbdqSI+ux4wqwNcFt1S n1zKP3ACsnDJQpYDLP+p6yoYmCE2G3vyYa2Rp9BEOTJuP4mwZR0X6NoUcCOXsXzWBOjtSYLUneDmV XfDgrNRL75yJb0MH9RXp30nGJxhgREaLVjZG1cOiuBKJpLYpnXyj3CmdXrCUwv4TNa21R4gMiU/TN zqE1QbNg3KdDlK4btbqYQnPsCRYQRzrj//c/HlUhbOdWb2B6UVwB7s0u4TodxyBBp+XzYAwfLOnsN nmw7lqNXFp0sYzAE5//4+e13eMMHcfZUGGB73WZC4myB4WtFAJ2uQLg+fFPV8jb33Bji1fLEzo7RL BABqdmMQ==; Received: from j217100.upc-j.chello.nl ([24.132.217.100] helo=noisy.programming.kicks-ass.net) by casper.infradead.org with esmtpsa (Exim 4.92.3 #3 (Red Hat Linux)) id 1k5QSn-0001tP-Lq; Tue, 11 Aug 2020 09:20:58 +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 28822300DAE; Tue, 11 Aug 2020 11:20:54 +0200 (CEST) Received: by hirez.programming.kicks-ass.net (Postfix, from userid 1000) id 1982020BFC4E5; Tue, 11 Aug 2020 11:20:54 +0200 (CEST) Date: Tue, 11 Aug 2020 11:20:54 +0200 From: peterz@infradead.org To: =?iso-8859-1?Q?J=FCrgen_Gro=DF?= Cc: Marco Elver , Borislav Petkov , Dave Hansen , fenghua.yu@intel.com, "H. Peter Anvin" , LKML , Ingo Molnar , syzkaller-bugs , Thomas Gleixner , "Luck, Tony" , the arch/x86 maintainers , yu-cheng.yu@intel.com, sdeep@vmware.com, virtualization@lists.linux-foundation.org, kasan-dev , syzbot , "Paul E. McKenney" , Wei Liu Subject: Re: [PATCH] x86/paravirt: Add missing noinstr to arch_local*() helpers Message-ID: <20200811092054.GB2674@hirez.programming.kicks-ass.net> References: <20200807095032.GA3528289@elver.google.com> <16671cf3-3885-eb06-79ff-4cbfaeeaea79@suse.com> <20200807113838.GA3547125@elver.google.com> <20200807151903.GA1263469@elver.google.com> <20200811074127.GR3982@worktop.programming.kicks-ass.net> <20200811081205.GV3982@worktop.programming.kicks-ass.net> <07f61573-fef1-e07c-03f2-a415c88dec6f@suse.com> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <07f61573-fef1-e07c-03f2-a415c88dec6f@suse.com> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Aug 11, 2020 at 10:38:50AM +0200, Jürgen Groß wrote: > In case you don't want to do it I can send the patch for the Xen > variants. I might've opened a whole new can of worms here. I'm not sure we can/want to fix the entire fallout this release :/ Let me ponder this a little, because the more I look at things, the more problems I keep finding... bah bah bah.