From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 18777 invoked by alias); 30 Oct 2014 10:14:51 -0000 Mailing-List: contact gdb-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: gdb-owner@sourceware.org Received: (qmail 18765 invoked by uid 89); 30 Oct 2014 10:14:50 -0000 Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=-2.3 required=5.0 tests=AWL,BAYES_00,RP_MATCHES_RCVD,SPF_HELO_PASS,SPF_PASS autolearn=ham version=3.3.2 X-HELO: mx1.redhat.com Received: from mx1.redhat.com (HELO mx1.redhat.com) (209.132.183.28) by sourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with (AES256-GCM-SHA384 encrypted) ESMTPS; Thu, 30 Oct 2014 10:14:49 +0000 Received: from int-mx10.intmail.prod.int.phx2.redhat.com (int-mx10.intmail.prod.int.phx2.redhat.com [10.5.11.23]) by mx1.redhat.com (8.14.4/8.14.4) with ESMTP id s9UAEgjV023920 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=FAIL); Thu, 30 Oct 2014 06:14:42 -0400 Received: from [127.0.0.1] (ovpn01.gateway.prod.ext.ams2.redhat.com [10.39.146.11]) by int-mx10.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id s9UAEcUH012046; Thu, 30 Oct 2014 06:14:39 -0400 Message-ID: <54520F8D.6080209@redhat.com> Date: Thu, 30 Oct 2014 10:14:00 -0000 From: Pedro Alves User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.1.1 MIME-Version: 1.0 To: Doug Evans , Pete Delaney CC: Jan Kratochvil , Andreas Arnez , "Discussion list for crash utility usage, maintenance and development" , GDB Development , Piet Delaney Subject: Re: gdb on KDUMP files References: <20141002102700.3eba84a5@suse.cz> <87d29rhrce.fsf@br87z6lw.de.ibm.com> <20141017115550.GA7123@host2.jankratochvil.net> In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-SW-Source: 2014-10/txt/msg00132.txt.bz2 On 10/24/2014 01:34 AM, Doug Evans wrote: > On Tue, Oct 21, 2014 at 5:53 PM, Pete Delaney wrote: >>> Nowadays it is only enough to use during configure: >>> --enable-64-bit-bfd >> >> I tried >> configure --enable-64-bit-bfd --enable-largefile >> >> And gdb still has problems accessing memory in the KDUMP that the crash-utility can read. >> For example crash can walk the task list but when the gdb macro tries >> To access the memory of the second task gdb says it can't access memory. > > Hi. > > It's not clear from the description that this is a largefile problem. It sounds likely to be related to points #1 and #2 described earlier in the discussion: On 10/17/2014 12:24 PM, Andreas Arnez wrote: >> > Last time I looked (approx. 1.5 years ago) the main missing pieces were: >> > >> > 1. Use of physical addresses (described above) > I guess this includes the capability to translate virtual to physical > addresses, using the kernel's page tables? > >> > 2. Support for multiple virtual address spaces (for different process >> > contexts) > One way of dealing with this might be to represent the different virtual > address spaces as multiple inferiors. Thanks, Pedro Alves