From owner-freebsd-stable@FreeBSD.ORG Sat Jul 10 17:37:24 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 9DCEF1065672; Sat, 10 Jul 2010 17:37:24 +0000 (UTC) (envelope-from alan.l.cox@gmail.com) Received: from mail-qw0-f54.google.com (mail-qw0-f54.google.com [209.85.216.54]) by mx1.freebsd.org (Postfix) with ESMTP id 3F2578FC08; Sat, 10 Jul 2010 17:37:23 +0000 (UTC) Received: by qwg5 with SMTP id 5so1012365qwg.13 for ; Sat, 10 Jul 2010 10:37:13 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:received:reply-to :in-reply-to:references:date:message-id:subject:from:to:cc :content-type; bh=UPwC87nX0oeLWamrGMGsRfCgmmJctXFUQyyLNLP8nAE=; b=YlR0r0x+snzU+PUZoEd2AQKiZ6XvdgGb7HetaHnUQr4f6GSIXkNgRW1YBfHPF+Tkpu 74Dc7P/x5JmMSqX6LE1BaSKm0Gzkg0ruJEyx3mLpO6SQ9tNXFDfAXzbhAeT+CQBUK3Tx o0gzC70RzgnE1Jmlo+HzDZ890EXY/o0b9O2hg= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:reply-to:in-reply-to:references:date:message-id :subject:from:to:cc:content-type; b=Y7ZRWt//C/H0IdNTlsEANU0MqY1RXiPQ7H0Abunnq/kI+fAvAVMqyWr+PVZ6KD0iqQ Tepru/RoMuhtyYcrLeAg565kBaVIKy8VjIDkpAnoRZEE4qdZG/WA8ukbKY7C8NWOH1eB Ri0OW1tN7D7NWkEeM9t2xH4np67YdEOiVMaR8= MIME-Version: 1.0 Received: by 10.224.28.23 with SMTP id k23mr859365qac.99.1278783432844; Sat, 10 Jul 2010 10:37:12 -0700 (PDT) Received: by 10.229.239.5 with HTTP; Sat, 10 Jul 2010 10:37:12 -0700 (PDT) In-Reply-To: <08562D52-02AA-46CF-BFCD-00D0A3C4DC34@hostpoint.ch> References: <6B57591F-9FA2-45EB-825F-1DB025C0635D@hostpoint.ch> <201007091603.31843.jhb@freebsd.org> <08562D52-02AA-46CF-BFCD-00D0A3C4DC34@hostpoint.ch> Date: Sat, 10 Jul 2010 12:37:12 -0500 Message-ID: From: Alan Cox To: Markus Gebert Content-Type: text/plain; charset=ISO-8859-1 X-Content-Filtered-By: Mailman/MimeDel 2.1.5 Cc: freebsd-stable@freebsd.org, John Baldwin Subject: Re: 8.1-RC2 - PCI fatal error or MCE triggered by USB/ehci on Sun X4100M2? X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: alc@freebsd.org List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 10 Jul 2010 17:37:24 -0000 On Fri, Jul 9, 2010 at 6:53 PM, Markus Gebert wrote: [snip] > > Yes, this hardware comes from Sun directly, but getting Sun (/Oracle) > support for this issue is gonna be tough. FreeBSD is unsupported, and in a > short test we couldn't reproduce the problem with a Linux kernel. While I > agree that a hardware issue has always been and still is a possibility to be > considered, the fact that we tested this on two machines remains as well as > the fact that 6.x, 7.x do not show the behavior. Another possibility is of > course, that the X4100 is prone to such issues and somehow 6.x and 7.x have > workarounds we're not aware of or just do something different in way so that > this issue does not get triggered. > > 8.1 is our first release to have the driver for configuring and reporting machine check exceptions enabled by default. Prior to 8.1, you had to explicitly enable the driver at boot time. Alan