From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:35304) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Ve7FE-0001oa-U4 for qemu-devel@nongnu.org; Wed, 06 Nov 2013 12:50:26 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Ve7F8-0003zD-Uy for qemu-devel@nongnu.org; Wed, 06 Nov 2013 12:50:20 -0500 Received: from mx1.redhat.com ([209.132.183.28]:62720) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Ve7F8-0003z1-NX for qemu-devel@nongnu.org; Wed, 06 Nov 2013 12:50:14 -0500 Received: from int-mx09.intmail.prod.int.phx2.redhat.com (int-mx09.intmail.prod.int.phx2.redhat.com [10.5.11.22]) by mx1.redhat.com (8.14.4/8.14.4) with ESMTP id rA6HoC0E017071 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK) for ; Wed, 6 Nov 2013 12:50:13 -0500 Message-ID: <527A814D.5020804@redhat.com> Date: Wed, 06 Nov 2013 18:50:05 +0100 From: Paolo Bonzini MIME-Version: 1.0 References: <20131106112214.14a448b6@redhat.com> <527A7EDE.3060409@redhat.com> <20131106174834.GA11767@redhat.com> In-Reply-To: <20131106174834.GA11767@redhat.com> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Subject: Re: [Qemu-devel] BUG: QEMU aborts when setting breakpoint in gdb (bisected) List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: "Michael S. Tsirkin" Cc: marcel.a@redhat.com, qemu-devel , Luiz Capitulino Il 06/11/2013 18:48, Michael S. Tsirkin ha scritto: > This just makes the symproms go away. That's correct. > The real bug is exec ignores high address bits during page > lookups. It should fail on invalid address not access > a random page. > I'll send a patch. The real real bug is that all address spaces should be 2^64, which you said you consider too intrusive a patch. I don't feel confident changing phys_page_find, even if it's just 2 lines. Paolo