From owner-freebsd-stable@FreeBSD.ORG Fri Nov 5 14:53:52 2010 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id E744F1065696 for ; Fri, 5 Nov 2010 14:53:52 +0000 (UTC) (envelope-from danallen46@airwired.net) Received: from mail.utahbroadband.com (mail.utahbroadband.com [204.14.20.91]) by mx1.freebsd.org (Postfix) with ESMTP id A8FAE8FC16 for ; Fri, 5 Nov 2010 14:53:52 +0000 (UTC) Received: (qmail 14742 invoked by uid 89); 5 Nov 2010 14:53:49 -0000 Received: from unknown (HELO ?192.168.0.18?) (danallen46@airwired.net@66.29.174.6) by mail.utahbroadband.com with ESMTPA; 5 Nov 2010 14:53:49 -0000 Mime-Version: 1.0 (Apple Message framework v1081) Content-Type: text/plain; charset=us-ascii From: Dan Allen In-Reply-To: <4CD11FE9.8050105@freebsd.org> Date: Fri, 5 Nov 2010 08:53:49 -0600 Content-Transfer-Encoding: quoted-printable Message-Id: <5224E1F5-4567-45A8-A12C-868F7B45BC21@airwired.net> References: <68E248E0-8619-4859-BFFE-1B5F5ABBC51F@airwired.net> <4CD11FE9.8050105@freebsd.org> To: Andriy Gapon X-Mailer: Apple Mail (2.1081) Cc: Sergey Kandaurov , FreeBSD-STABLE Mailing List Subject: Re: Fatal trap 18 X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 05 Nov 2010 14:53:53 -0000 On 3 Nov 2010, at 2:40 AM, Andriy Gapon wrote: > This problem seems to happen only on SMP systems that for some reason = run as UP. > E.g. because ACPI and/or APIC are disabled. > Or some other BIOS configuration. > But I am not sure what exactly is the case here. Okay, I have been researching my UP/SMP problem. In the past, before recent "Intel topology" changes, on my Toshiba = Satellite U205 machine if I used a kernel with ACPI support, only 1 = logical CPU showed up in FreeBSD 8.1-STABLE. When I booted into Windows = XP on the same machine, with the same BIOS settings, I would see 2 = logical CPUs. If I built a FreeBSD kernel WITHOUT ACPI support and left = the BIOS settings as they were above, I then would see 2 logical CPUs. Now with these recent FreeBSD changes I cannot get the machine to EVER = recognize a 2nd logical processor, but if I boot into Windows XP I still = see two CPUs, so we still have a bug in this new Intel topology code. This laptop has an Intel Core Duo T2400 @ 1.83 GHz chip. (The BIOS is = set to provide multiple logical CPUs in all cases and Andriy, I am using = your patched kernel.) Is there anything else I can do to help you understand this system = config? What next? Dan