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=-5.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, NICE_REPLY_A,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 2A04EC433B4 for ; Tue, 6 Apr 2021 09:52:16 +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 BBED1613BE for ; Tue, 6 Apr 2021 09:52:15 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org BBED1613BE Authentication-Results: mail.kernel.org; dmarc=pass (p=none dis=none) header.from=xenproject.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=xen-devel-bounces@lists.xenproject.org Received: from list by lists.xenproject.org with outflank-mailman.105743.202239 (Exim 4.92) (envelope-from ) id 1lTiNS-0005ZL-WA; Tue, 06 Apr 2021 09:52:06 +0000 X-Outflank-Mailman: Message body and most headers restored to incoming version Received: by outflank-mailman (output) from mailman id 105743.202239; Tue, 06 Apr 2021 09:52:06 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1lTiNS-0005ZE-Sw; Tue, 06 Apr 2021 09:52:06 +0000 Received: by outflank-mailman (input) for mailman id 105743; Tue, 06 Apr 2021 09:52:06 +0000 Received: from mail.xenproject.org ([104.130.215.37]) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1lTiNS-0005Z9-0M for xen-devel@lists.xenproject.org; Tue, 06 Apr 2021 09:52:06 +0000 Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1lTiNR-0003j7-Vn for xen-devel@lists.xenproject.org; Tue, 06 Apr 2021 09:52:05 +0000 Received: from iwj (helo=mariner.uk.xensource.com) by xenbits.xenproject.org with local-bsmtp (Exim 4.92) (envelope-from ) id 1lTiNR-0004ni-UB for xen-devel@lists.xenproject.org; Tue, 06 Apr 2021 09:52:05 +0000 Received: from iwj by mariner.uk.xensource.com with local (Exim 4.89) (envelope-from ) id 1lTiNN-00074A-8N; Tue, 06 Apr 2021 10:52:01 +0100 X-BeenThere: xen-devel@lists.xenproject.org List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Precedence: list Sender: "Xen-devel" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=xenproject.org; s=20200302mail; h=References:In-Reply-To:Subject:Cc:To:Date :Message-ID:Content-Transfer-Encoding:Content-Type:MIME-Version:From; bh=xi0zxzD5z7v5EphnH1i0hhgeVLrYw7TsuSAgVsIt8kI=; b=dLCdCFOKjk342+r83iDPigZbdn fKZIT8ToW8nzvBvGaEYRcUbe+xTJRjk0TxwuwvtQ8iDlJWw7q1XNC2NSpy++mmRNs9fEnea0G87L7 SItmEahEj51dFJBEfZsRLtlGz9Xnt9SbZ5b9oAzcDZPqSNEpFl9CCNniD28yccHvsarw=; From: Ian Jackson MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 8bit Message-ID: <24684.12097.5068.371887@mariner.uk.xensource.com> Date: Tue, 6 Apr 2021 10:52:01 +0100 To: Roger Pau =?iso-8859-1?Q?Monn=E9?= Cc: Jan Beulich , "xen-devel\@lists.xenproject.org" , Andrew Cooper , George Dunlap , Julien Grall , Stefano Stabellini , Wei Liu , Dario Faggioli Subject: Re: Revert NR_CPUS=1 fix from 4.15 (was: Re: [PATCH] fix for_each_cpu() again for NR_CPUS=1) In-Reply-To: References: <4d993e67-2bdf-9ac3-f78e-daf279642de1@suse.com> <59387a2d-e28d-4e12-6b91-5df464e8ab9a@suse.com> X-Mailer: VM 8.2.0b under 24.5.1 (i686-pc-linux-gnu) Roger Pau Monné writes ("Re: Revert NR_CPUS=1 fix from 4.15 (was: Re: [PATCH] fix for_each_cpu() again for NR_CPUS=1)"): > On Thu, Apr 01, 2021 at 11:26:03AM +0200, Jan Beulich wrote: > > Well, I didn't propose reverting (or taking this fix) because I think > > build breakage is better than runtime breakage. But in the end, Ian, > > it's up to you. > > Oh, right, sorry. The build issue only happens with NR_CPUS=1, in > which case I agree, there's no need to do anything in 4.15 IMO. Oh. Right. I had the impression that the build breakage broke other configurations too. Since you're saying that's not the case, please disregard my earlier mail. Ian.