From owner-freebsd-hackers@FreeBSD.ORG Fri Sep 3 16:20:22 2010 Return-Path: Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id CA62F10657C9 for ; Fri, 3 Sep 2010 16:20:22 +0000 (UTC) (envelope-from mj@feral.com) Received: from ns1.feral.com (ns1.feral.com [192.67.166.1]) by mx1.freebsd.org (Postfix) with ESMTP id 967398FC1A for ; Fri, 3 Sep 2010 16:20:22 +0000 (UTC) Received: from [192.168.221.2] (remotevpn [192.168.221.2]) by ns1.feral.com (8.14.3/8.14.3) with ESMTP id o83GKCtc012046 (version=TLSv1/SSLv3 cipher=DHE-RSA-CAMELLIA256-SHA bits=256 verify=NO) for ; Fri, 3 Sep 2010 09:20:21 -0700 (PDT) (envelope-from mj@feral.com) Message-ID: <4C812037.5070701@feral.com> Date: Fri, 03 Sep 2010 09:20:07 -0700 From: Matthew Jacob Organization: Feral Software User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2.8) Gecko/20100802 Thunderbird/3.1.2 MIME-Version: 1.0 To: freebsd-hackers@freebsd.org References: <4C81187E.9050308@icyb.net.ua> <4C811DDC.6080001@feral.com> <4C811F7D.9040807@icyb.net.ua> In-Reply-To: <4C811F7D.9040807@icyb.net.ua> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Greylist: Sender DNS name whitelisted, not delayed by milter-greylist-4.2.6 (ns1.feral.com [192.168.221.1]); Fri, 03 Sep 2010 09:20:22 -0700 (PDT) Subject: Re: minidump: a hack to prevent vm_page_dump bitmap change during dumping X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 03 Sep 2010 16:20:22 -0000 On 9/3/2010 9:17 AM, Andriy Gapon wrote: > on 03/09/2010 19:10 Matthew Jacob said the following: >> You can do it this way, but IMO, the best thing to do is to when you're panicing >> stop all other CPUs. > Entirely agree, that's the way it should be handled. > Unfortunately, all I could come up with was the patch that I posted. > Ah. I have some stuff for stopping other CPUs, but haven't had time to clean them up from the 7.2 implementation for head.