From mboxrd@z Thu Jan 1 00:00:00 1970 From: Paul Brook Subject: Re: [Qemu-devel] Re: gdbstub: packet reply is too long Date: Sat, 20 Dec 2008 21:03:18 +0000 Message-ID: <200812202103.19216.paul@codesourcery.com> References: <1229776952.22890.2.camel@ws-aschultz> <200812202035.33830.paul@codesourcery.com> <494D5CEF.2040203@web.de> Mime-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Cc: qemu-devel@nongnu.org, Andreas Schultz , kvm@vger.kernel.org To: Jan Kiszka Return-path: Received: from mail.codesourcery.com ([65.74.133.4]:53080 "EHLO mail.codesourcery.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753463AbYLTVDV (ORCPT ); Sat, 20 Dec 2008 16:03:21 -0500 In-Reply-To: <494D5CEF.2040203@web.de> Content-Disposition: inline Sender: kvm-owner@vger.kernel.org List-ID: On Saturday 20 December 2008, Jan Kiszka wrote: > Paul Brook wrote: > >>> I'm trying to debug a 32bit (i386) kernel on a 64bit host under kvm, > >>> but gdb always refuses it with: > >> > >> QEMU and also KVM's x86_64 version are currently broken /wrt debugging > >> targets < 64 bits. I've posted a fix a while ago, but there were > >> concerns that gdb should better be enhanced (which is basically true, > >> but unrealistic to achieve in the near future). > > > > I still maintain that making the g packet format depend on the current > > CPU more is absolutely the wrong way to fix this. > > From a higher perspective, it is surely not the cleanest approach. But > it still appears to be the only one which helps us working around this > gdb shortcoming. Actually it isn't. You could add an explicit switch. Paul