From owner-freebsd-current@FreeBSD.ORG Sun May 24 11:46:27 2009 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 2CD891065673; Sun, 24 May 2009 11:46:27 +0000 (UTC) (envelope-from rwatson@FreeBSD.org) Received: from cyrus.watson.org (cyrus.watson.org [65.122.17.42]) by mx1.freebsd.org (Postfix) with ESMTP id 062A98FC1D; Sun, 24 May 2009 11:46:27 +0000 (UTC) (envelope-from rwatson@FreeBSD.org) Received: from fledge.watson.org (fledge.watson.org [65.122.17.41]) by cyrus.watson.org (Postfix) with ESMTPS id 953AC46B29; Sun, 24 May 2009 07:46:26 -0400 (EDT) Date: Sun, 24 May 2009 12:46:26 +0100 (BST) From: Robert Watson X-X-Sender: robert@fledge.watson.org To: Scott Long In-Reply-To: <4A19300A.1020906@samsco.org> Message-ID: References: <20090524091436.GR1271@hoeg.nl> <4A19300A.1020906@samsco.org> User-Agent: Alpine 2.00 (BSF 1167 2008-08-23) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed Cc: Ed Schouten , Adrian Chadd , FreeBSD Current , freebsd-xen@freebsd.org Subject: Re: Default Xen PVM console? X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 24 May 2009 11:46:27 -0000 On Sun, 24 May 2009, Scott Long wrote: >>> Please don't. Someone on IRC told me Xen also has some framebuffer >>> feature. Say, someone would port syscons to Xen, the naming would conflict >>> with the console device node. /dev/xc0 is good enough. I even think it >>> should have been called ttyx0, not xc0. >> >> Given that there will be increasing levels of support for "pass-through" >> hardware access in virtual machine environments and a trend in the >> direction of virtualization-friendly hardware, we shouldn't preclude the >> possibility of something a lot closer to syscons working inside of Xen in >> the future. This means we should leave the syscons device names open so >> that syscons can claim them if desired. > > HVM mode already supports "pass-through" with syscons working in it. That is > orthogonal to the discussion of supporting the native virtualization > features of Xen. Not sure I follow this comment: what I'm saying is that the Xen-specific console device should not use the same device names as syscons, so that the two can coexist in a single installation. Robert N M Watson Computer Laboratory University of Cambridge