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=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 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 B2F57C433DF for ; Mon, 18 May 2020 15:48:04 +0000 (UTC) Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 88AF720657 for ; Mon, 18 May 2020 15:48:03 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 88AF720657 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=suse.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=xen-devel-bounces@lists.xenproject.org Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jahzc-0005pd-QK; Mon, 18 May 2020 15:47:52 +0000 Received: from all-amaz-eas1.inumbo.com ([34.197.232.57] helo=us1-amaz-eas2.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jahzb-0005ol-FH for xen-devel@lists.xenproject.org; Mon, 18 May 2020 15:47:51 +0000 X-Inumbo-ID: edbf9e88-991e-11ea-a877-12813bfff9fa Received: from mx2.suse.de (unknown [195.135.220.15]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id edbf9e88-991e-11ea-a877-12813bfff9fa; Mon, 18 May 2020 15:47:51 +0000 (UTC) X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.220.254]) by mx2.suse.de (Postfix) with ESMTP id 5ACCCAEDD; Mon, 18 May 2020 15:47:52 +0000 (UTC) Subject: Re: [PATCH v3 2/2] x86/idle: prevent entering C6 with in service interrupts on Intel To: =?UTF-8?Q?Roger_Pau_Monn=c3=a9?= , Andrew Cooper References: <20200515135802.63853-1-roger.pau@citrix.com> <20200515135802.63853-3-roger.pau@citrix.com> <20200518154527.GW54375@Air-de-Roger> From: Jan Beulich Message-ID: <6ce247e4-ef85-6793-68a6-0d1cde7f886d@suse.com> Date: Mon, 18 May 2020 17:47:47 +0200 User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:68.0) Gecko/20100101 Thunderbird/68.8.0 MIME-Version: 1.0 In-Reply-To: <20200518154527.GW54375@Air-de-Roger> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit X-BeenThere: xen-devel@lists.xenproject.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Cc: Stefano Stabellini , Julien Grall , Wei Liu , Ian Jackson , George Dunlap , xen-devel@lists.xenproject.org Errors-To: xen-devel-bounces@lists.xenproject.org Sender: "Xen-devel" On 18.05.2020 17:45, Roger Pau Monné wrote: > On Mon, May 18, 2020 at 05:05:12PM +0200, Jan Beulich wrote: >> [CAUTION - EXTERNAL EMAIL] DO NOT reply, click links, or open attachments unless you have verified the sender and know the content is safe. >> >> On 15.05.2020 15:58, Roger Pau Monne wrote: >>> --- a/docs/misc/xen-command-line.pandoc >>> +++ b/docs/misc/xen-command-line.pandoc >>> @@ -652,6 +652,15 @@ Specify the size of the console debug trace buffer. By specifying `cpu:` >>> additionally a trace buffer of the specified size is allocated per cpu. >>> The debug trace feature is only enabled in debugging builds of Xen. >>> >>> +### disable-c6-errata >> >> Hmm, yes please - a disable for errata! ;-) >> >> How about "avoid-c6-errata", and then perhaps as a sub-option to >> "cpuidle="? (If we really want a control for this in the first >> place.) > > Right, I see I'm very bad at naming. Not sure it's even worth it > maybe? > > I can remove it completely from the patch if that is OK. I'd be fine without. Andrew? Jan