From owner-freebsd-xen@FreeBSD.ORG Tue Jul 26 19:30:54 2011 Return-Path: Delivered-To: freebsd-xen@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 9D9F21065670 for ; Tue, 26 Jul 2011 19:30:54 +0000 (UTC) (envelope-from kmacybsd@gmail.com) Received: from mail-vw0-f54.google.com (mail-vw0-f54.google.com [209.85.212.54]) by mx1.freebsd.org (Postfix) with ESMTP id 52ED28FC0C for ; Tue, 26 Jul 2011 19:30:54 +0000 (UTC) Received: by vws18 with SMTP id 18so792522vws.13 for ; Tue, 26 Jul 2011 12:30:53 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=mime-version:sender:in-reply-to:references:date :x-google-sender-auth:message-id:subject:from:to:cc:content-type; bh=F9Gln0bvIogMunelkzHspz62lEmrtVfckP0LtbdzHIw=; b=sZfAnPyQQCoSdOAV7FbJsJTNN/317BYqKUpo8taEPUShjsxNdjnQIXQiKHH1J882Zj SWEiyG9u1oNfM80yZ+FYK3112w1IEYU2EopbmmHJK1Iq5KREwQqBbxi/uGahqGv5gx2o 7sqtu5uMcoeaXJ15d+2b2IzGN6p0bTju2ZCNw= MIME-Version: 1.0 Received: by 10.52.32.37 with SMTP id f5mr5936026vdi.509.1311706914285; Tue, 26 Jul 2011 12:01:54 -0700 (PDT) Sender: kmacybsd@gmail.com Received: by 10.52.188.101 with HTTP; Tue, 26 Jul 2011 12:01:54 -0700 (PDT) In-Reply-To: <1311705757.3927.10.camel@hitfishpass-lx.corp.yahoo.com> References: <1311705757.3927.10.camel@hitfishpass-lx.corp.yahoo.com> Date: Tue, 26 Jul 2011 21:01:54 +0200 X-Google-Sender-Auth: zZNAWD0EUT-qUt-vKPVkYX0lLB0 Message-ID: From: "K. Macy" To: Sean Bruno Content-Type: text/plain; charset=ISO-8859-1 X-Content-Filtered-By: Mailman/MimeDel 2.1.5 Cc: "freebsd-xen@freebsd.org" Subject: Re: FreeBSD Xen PV i386 --> 855MB Max? X-BeenThere: freebsd-xen@freebsd.org X-Mailman-Version: 2.1.5 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, 26 Jul 2011 19:30:54 -0000 It's an artifact of the initialization code and how the xen domain builder configures the initial mapped memory. I've come against this and fixed this issue in the past but I guess either the domain builder has changed or the initial code has bit rotted. I can't commit so ask Colin if he can fix. Cheers On Tuesday, July 26, 2011, Sean Bruno wrote: > I note that if I scale the i386 PV Xen kernel past 855MB, I get an insta > panic at boot. I assume that there's a hard limit on the amount of RAMS > we can use here? > > Using config file "./ref8-xen32". > Started domain ref8-xen32 (id=133) > WARNING: loader(8) metadata is missing! > GDB: no debug ports present > KDB: debugger backends: ddb > KDB: current backend: ddb > Copyright (c) 1992-2011 The FreeBSD Project. > Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994 > The Regents of the University of California. All rights > reserved. > FreeBSD is a registered trademark of The FreeBSD Foundation. > FreeBSD 8.2-STABLE #1 r224449: Tue Jul 26 09:53:36 PDT 2011 > > sbruno@ref8-xen32.freebsd.org:/usr/obj/dumpster/scratch/sbruno-scratch/8/sys/XEN i386 > WARNING: WITNESS option enabled, expect reduced performance. > panic: pmap_init: page table page is out of range > cpuid = 0 > KDB: enter: panic > [thread pid 0 tid 0 ] > Stopped at 0xc010e68a: movl $0,0xc03f20b4 > > > _______________________________________________ > freebsd-xen@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-xen > To unsubscribe, send any mail to "freebsd-xen-unsubscribe@freebsd.org" >