From owner-freebsd-xen@freebsd.org Tue May 17 10:17:14 2016 Return-Path: Delivered-To: freebsd-xen@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 1530BB3EC18 for ; Tue, 17 May 2016 10:17:14 +0000 (UTC) (envelope-from kostikbel@gmail.com) Received: from kib.kiev.ua (kib.kiev.ua [IPv6:2001:470:d5e7:1::1]) (using TLSv1 with cipher DHE-RSA-CAMELLIA256-SHA (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 873FF17F7 for ; Tue, 17 May 2016 10:17:13 +0000 (UTC) (envelope-from kostikbel@gmail.com) Received: from tom.home (kib@localhost [127.0.0.1]) by kib.kiev.ua (8.15.2/8.15.2) with ESMTPS id u4HAH1Vl041291 (version=TLSv1 cipher=DHE-RSA-CAMELLIA256-SHA bits=256 verify=NO); Tue, 17 May 2016 13:17:01 +0300 (EEST) (envelope-from kostikbel@gmail.com) DKIM-Filter: OpenDKIM Filter v2.10.3 kib.kiev.ua u4HAH1Vl041291 Received: (from kostik@localhost) by tom.home (8.15.2/8.15.2/Submit) id u4HAH0YX041290; Tue, 17 May 2016 13:17:00 +0300 (EEST) (envelope-from kostikbel@gmail.com) X-Authentication-Warning: tom.home: kostik set sender to kostikbel@gmail.com using -f Date: Tue, 17 May 2016 13:17:00 +0300 From: Konstantin Belousov To: Roger Pau Monn? Cc: "freebsd-xen@freebsd.org" Subject: Re: xn ethernet issues as DOMU under NetBSD DOM0 FIXED! Message-ID: <20160517101700.GB89104@kib.kiev.ua> References: <20160512162247.64x5hyud5i2jfgqy@mac> <20160517094301.h4oa4nyyakbj7r3h@mac> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20160517094301.h4oa4nyyakbj7r3h@mac> User-Agent: Mutt/1.6.1 (2016-04-27) X-Spam-Status: No, score=-2.0 required=5.0 tests=ALL_TRUSTED,BAYES_00, DKIM_ADSP_CUSTOM_MED,FREEMAIL_FROM,NML_ADSP_CUSTOM_MED autolearn=no autolearn_force=no version=3.4.1 X-Spam-Checker-Version: SpamAssassin 3.4.1 (2015-04-28) on tom.home X-BeenThere: freebsd-xen@freebsd.org X-Mailman-Version: 2.1.22 Precedence: list List-Id: Discussion of the freebsd port to xen - implementation and usage List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 17 May 2016 10:17:14 -0000 On Tue, May 17, 2016 at 11:43:01AM +0200, Roger Pau Monn? wrote: > With previous FreeBSD 9.X versions, in order to get Xen support you had to > compile a specific kernel (XENHVM), we wanted to remove this for FreeBSD 10, > so we included the Xen components into the GENERIC kernel and made sure > there were no weird interactions on bare metal. However, this change was > too big to merge into 9, so in order to try to improve the situation on 9 > Colin decided to pack all the Xen support into a kernel module, in order to > remove the need to compile a specific kernel for Xen VMs. Why the module is a bad idea on HEAD/10.x ? To explain further, I do not object against Xen code included into GENERIC. I am interested in the possibility of the stripped down kernel (without XEN options) which can be made operable on HVM with the module preloaded.