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, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED 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 5A411C433DB for ; Mon, 4 Jan 2021 10:26:10 +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 0511121D93 for ; Mon, 4 Jan 2021 10:26:09 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 0511121D93 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=antioche.eu.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.61064.107162 (Exim 4.92) (envelope-from ) id 1kwN3n-0000LH-Na; Mon, 04 Jan 2021 10:25:59 +0000 X-Outflank-Mailman: Message body and most headers restored to incoming version Received: by outflank-mailman (output) from mailman id 61064.107162; Mon, 04 Jan 2021 10:25:59 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1kwN3n-0000LA-KG; Mon, 04 Jan 2021 10:25:59 +0000 Received: by outflank-mailman (input) for mailman id 61064; Mon, 04 Jan 2021 10:25:58 +0000 Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1kwN3m-0000L5-Td for xen-devel@lists.xenproject.org; Mon, 04 Jan 2021 10:25:58 +0000 Received: from chassiron.antioche.eu.org (unknown [2001:41d0:fe9d:1101::1]) by us1-rack-iad1.inumbo.com (Halon) with ESMTPS id d2a20baa-8979-46d7-bb40-ce281220ea3b; Mon, 04 Jan 2021 10:25:57 +0000 (UTC) Received: from rochebonne.antioche.eu.org (rochebonne [IPv6:2001:41d0:fe9d:1100:221:70ff:fe0c:9885]) by chassiron.antioche.eu.org (8.15.2/8.15.2) with ESMTP id 104APqbO001729; Mon, 4 Jan 2021 11:25:52 +0100 (MET) Received: by rochebonne.antioche.eu.org (Postfix, from userid 1210) id 5DFE2281D; Mon, 4 Jan 2021 11:25:52 +0100 (CET) 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" X-Inumbo-ID: d2a20baa-8979-46d7-bb40-ce281220ea3b Date: Mon, 4 Jan 2021 11:25:52 +0100 From: Manuel Bouyer To: Roger Pau =?iso-8859-1?Q?Monn=E9?= Cc: xen-devel@lists.xenproject.org Subject: Re: [PATCH 07/24] Remove NetBSD's system headers. We'll use the system-provided ones, which are up to date. Message-ID: <20210104102552.GC2005@antioche.eu.org> References: <20201214163623.2127-1-bouyer@netbsd.org> <20201214163623.2127-8-bouyer@netbsd.org> <20201229114638.yegfswyqzhz7tj25@Air-de-Roger> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <20201229114638.yegfswyqzhz7tj25@Air-de-Roger> X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.4.3 (chassiron.antioche.eu.org [IPv6:2001:41d0:fe9d:1101:0:0:0:1]); Mon, 04 Jan 2021 11:25:52 +0100 (MET) On Tue, Dec 29, 2020 at 12:46:38PM +0100, Roger Pau Monné wrote: > What would happen when a new device (or ioctl to and existing one) is > added? > > You would then run into issues of newer versions of Xen not building on > older NetBSD systems, or would have to appropriately gate the newly > added code to only be built when the headers are available. I prefer to have the build fail if the system isn't new enough, than have it build and then fail to run. We already have version requirements for e.g. bug fixes. -- Manuel Bouyer NetBSD: 26 ans d'experience feront toujours la difference --