From owner-freebsd-current@FreeBSD.ORG  Fri Mar 20 17:22:38 2009
Return-Path: <owner-freebsd-current@FreeBSD.ORG>
Delivered-To: current@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id D6CC51065673;
	Fri, 20 Mar 2009 17:22:38 +0000 (UTC)
	(envelope-from luigi@onelab2.iet.unipi.it)
Received: from onelab2.iet.unipi.it (onelab2.iet.unipi.it [131.114.9.129])
	by mx1.freebsd.org (Postfix) with ESMTP id 91BFF8FC0A;
	Fri, 20 Mar 2009 17:22:38 +0000 (UTC)
	(envelope-from luigi@onelab2.iet.unipi.it)
Received: by onelab2.iet.unipi.it (Postfix, from userid 275)
	id 4982273098; Fri, 20 Mar 2009 18:27:26 +0100 (CET)
Date: Fri, 20 Mar 2009 18:27:26 +0100
From: Luigi Rizzo <rizzo@iet.unipi.it>
To: John Baldwin <jhb@freebsd.org>
Message-ID: <20090320172726.GA95160@onelab2.iet.unipi.it>
References: <20081121231400.GA94863@onelab2.iet.unipi.it>
	<20081121232325.GA15258@citylink.fud.org.nz>
	<20081121234104.GA95875@onelab2.iet.unipi.it>
	<200903191104.48803.jhb@freebsd.org>
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <200903191104.48803.jhb@freebsd.org>
User-Agent: Mutt/1.4.2.3i
Cc: freebsd-current@freebsd.org, kib@freebsd.org, current@freebsd.org,
	Andrew Thompson <thompsa@freebsd.org>
Subject: Re: Recent versions of pxeboot hang/panic on AMD platform.
X-BeenThere: freebsd-current@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: Discussions about the use of FreeBSD-current
	<freebsd-current.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-current>, 
	<mailto:freebsd-current-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-current>
List-Post: <mailto:freebsd-current@freebsd.org>
List-Help: <mailto:freebsd-current-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-current>,
	<mailto:freebsd-current-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Fri, 20 Mar 2009 17:22:39 -0000

On Thu, Mar 19, 2009 at 11:04:48AM -0400, John Baldwin wrote:
> On Friday 21 November 2008 6:41:04 pm Luigi Rizzo wrote:
...
> > Assuming that the interrupt thing is a possible cause for the bug,
> > I can understand that the kernel size can affect the probability of
> > getting an interrupt at the wrong time.
> > 
> > There was one bug due to memory overflow that i fixed in a recent
> > commit to head (see boot/common/interp.c),
> > but this only helped on a different amd64 motherboard.
> 
> Is this now resolved with the latest pxeboot from HEAD?

I can confirm that with today's code (20090320) both HEAD and RELENG_7
produce a pxeboot that works reliably on the dual-core AMD CPU and motherboard
where previous loaders failed.

thanks!

luigi