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=FREEMAIL_FORGED_FROMDOMAIN, FREEMAIL_FROM,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS, URIBL_BLOCKED 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 A793CC43334 for ; Thu, 6 Sep 2018 08:38:55 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 6DC0E2075B for ; Thu, 6 Sep 2018 08:38:55 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 6DC0E2075B Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=gmx.de Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728275AbeIFNNO (ORCPT ); Thu, 6 Sep 2018 09:13:14 -0400 Received: from mout.gmx.net ([212.227.17.20]:52897 "EHLO mout.gmx.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728262AbeIFNNN (ORCPT ); Thu, 6 Sep 2018 09:13:13 -0400 Received: from homer.simpson.net ([185.221.151.58]) by mail.gmx.com (mrgmx103 [212.227.17.168]) with ESMTPSA (Nemesis) id 0MFctN-1g3aQA1nMb-00EheY; Thu, 06 Sep 2018 10:38:19 +0200 Message-ID: <1536223096.4669.35.camel@gmx.de> Subject: Re: [PATCH RT 08/22] Revert "x86: UV: raw_spinlock conversion" From: Mike Galbraith To: Sebastian Andrzej Siewior , Steven Rostedt Cc: linux-kernel@vger.kernel.org, linux-rt-users , Thomas Gleixner , Carsten Emde , John Kacur , Paul Gortmaker , Julia Cartwright , Daniel Wagner , tom.zanussi@linux.intel.com Date: Thu, 06 Sep 2018 10:38:16 +0200 In-Reply-To: <20180906073549.zu6gdlwor4fwjngs@linutronix.de> References: <20180905122754.443196118@goodmis.org> <20180905122835.654334475@goodmis.org> <20180906073549.zu6gdlwor4fwjngs@linutronix.de> Content-Type: text/plain; charset="ISO-8859-15" X-Mailer: Evolution 3.26.6 Mime-Version: 1.0 Content-Transfer-Encoding: 7bit X-Provags-ID: V03:K1:tXbTcAi4MbhdKYdBl2VKGN6est0f0zliPM1kZr+AXAhn+0q2KKX noknbdNmyU/zC4EYTinv/CubWOR4S6NPOSNGzWK2cNUZgdLzjghBqUlBBzpdXT1Mg4jwJZZ jPGttT+tndHdPcQOTQhrPXTqtN8n24eu8Ss4rgEySbnPomI9qhfarg3YQdyhTv6rWEjtbyv ksP4F8nX9fzsguF02dOEg== X-UI-Out-Filterresults: notjunk:1;V01:K0:nuvb/ooxw/k=:CSJ+bNDXXBiUae4AzCfAYN zFY6Si/Sjk+9MyTfHOtGR3cum+eEmhtmUWKiqApJtRTIMsltVcSzE5CtEpxdlTn0vTjYVMO61 c/sD4ezOPES20r5Mh0fuRHOIC9XwkXom20YfRdc3FOeKuxE+bUGI9ZaWgaIVmzSb0QWW0CdmQ dB/yB5Jyzu5nehd4GkoAFPM4rWd0mv0FrFY+VVTTS5rooTmMjSqWc7mKe4at4v2JfaIex9RZw IlepZeyw8bTXOmr9vBfdUBXTf+mgTMYbEjJodrjr2jWD3RQ5hBPNbmJqnfe/5lquiZDlEhqgj MvMhwPl05PZq/L50mnrVo2TTREH7rTeKPQHJIanKTxDhGIMmbMpX1NL6Wr2Wg/ZF5qz+flBOF E6Cd/bf6gh39+JqJ2KSiopWPxziWi2FVLdb3dCER8Bee5Bs7EA/O32EEYTOJE9NBflzBAh7R2 ewo+oD1AROyRLknzy0JxgBu/iVyAEOn2grsq0YPU8L9H5DIDOUCghWFVmwXr94lWHCj/Kh3Bl bG6wN2WZ01ZSFMgsrjsP3+34lFoGFxbj0o6qdqv2WpUSa53/x1IA4GQ1pXMcSkDCm42V8X73o iOhURFpbTygDvUAYiorFxtquhdZMhN3F4WijH1Gl4628e3l6o0OEYuzwb7NhMDUUaVy9z/xDI 7b1GHqsGr6ab/PnFcF88uhBDy0LPnPbsfzECKhu/aSVfPJYKV49RSolrY5PjvxUaxCYUhfnMv iMHMLG/8bVw1g9zd9euiP4Jm16MQgHPGw2yrQGx/6VMLq85anLOMNmvWkzI3rb6avchxIvbFW FrxSylBLiCcxQFLYHDCkmBakoo5sB+ZnZni8eqFZqlHVcFqVf7b4u1u2XBoLBZXpQXlgmtWhD fjavIDmnjuGuuu5ou2Qg== Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, 2018-09-06 at 09:35 +0200, Sebastian Andrzej Siewior wrote: > On 2018-09-05 08:28:02 [-0400], Steven Rostedt wrote: > > 4.14.63-rt41-rc1 stable review patch. > > If anyone has any objections, please let me know. > > > > ------------------ > > > > From: Sebastian Andrzej Siewior > > > > [ Upstream commit 2a9c45d8f89112458364285cbe2b0729561953f1 ] > > > > Drop the Ultraviolet patch. UV looks broken upstream for PREEMPT, too. > > Mike is the only person I know that has such a thing and he isn't going > > to fix this upstream (from 1526977462.6491.1.camel@gmx.de): > > I don't think that we need to propagate that revert for stable. I > reverted it in the devel tree because nobody wanted this upstream and I > couldn't test it. For that reason I didn't see the point for having it > in the RT tree. > However, if you want to revert it for stable, be my guest. It probably > will have no impact and if it will people might step forward and fix it > properly / upstream. I'm in favor of reverting it as useless cruft. UV has been broken forever wrt PREEMPT, and nobody cares. The original interest in UV RT support evaporated while 2.6.33-rt was still current (and when getting it working took a bit more than a spinlock conversion). -Mike