From owner-freebsd-current@FreeBSD.ORG  Mon Aug 23 23:06:20 2004
Return-Path: <owner-freebsd-current@FreeBSD.ORG>
Delivered-To: freebsd-current@freebsd.org
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP id A3ABB16A4CE
	for <freebsd-current@freebsd.org>;
	Mon, 23 Aug 2004 23:06:20 +0000 (GMT)
Received: from troutmask.apl.washington.edu (troutmask.apl.washington.edu
	[128.208.78.105])
	by mx1.FreeBSD.org (Postfix) with ESMTP id 7EB6343D1D
	for <freebsd-current@freebsd.org>;
	Mon, 23 Aug 2004 23:06:20 +0000 (GMT)
	(envelope-from sgk@troutmask.apl.washington.edu)
Received: from troutmask.apl.washington.edu (localhost [127.0.0.1])
	i7NN6Kht041391	for <freebsd-current@freebsd.org>;
	Mon, 23 Aug 2004 16:06:20 -0700 (PDT)
	(envelope-from sgk@troutmask.apl.washington.edu)
Received: (from sgk@localhost)i7NN6KCP041390
	for freebsd-current@freebsd.org;
	Mon, 23 Aug 2004 16:06:20 -0700 (PDT)	(envelope-from sgk)
Date: Mon, 23 Aug 2004 16:06:20 -0700
From: Steve Kargl <sgk@troutmask.apl.washington.edu>
To: freebsd-current@freebsd.org
Message-ID: <20040823230619.GB41337@troutmask.apl.washington.edu>
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
User-Agent: Mutt/1.4.1i
Subject: AMD64 VM panic with >8 GB memory
X-BeenThere: freebsd-current@freebsd.org
X-Mailman-Version: 2.1.1
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: Mon, 23 Aug 2004 23:06:20 -0000

The panic is hand transcribed.

vm_pageq_remove_nowakeup() at vm_pageq_remove_nowakeup+0x30
vm_page_alloc() at vm_page_alloc+0x25a
uma_small_alloc() at uma_small_alloc+0x5f
slab_zalloc() at slab_zalloc+0xcb
pmap_init() at pmap_init+0x98
vm_mem_init() at vm_mem_init+0x3e
mi_startup() at mi_startup+0xb6
btext at btext+0x2c

Some relevant info.  The motherboard is a Tyan K8S Pro
(S2882) with 12 GB of PC2700 ECC memory.  If I limit
the memory by setting 'hw.physmem="8G"' in the loader
or in /boot/loader.conf, then the system boots fine.
Any other setting above 8G will result in the above panic.

The panic occurs too earlier to get a crash dump.
However, I'm will to try any patch or settings.

-- 
Steve