From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:45977) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1br0II-0004vk-1r for qemu-devel@nongnu.org; Mon, 03 Oct 2016 06:16:22 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1br0IC-0003mB-4Z for qemu-devel@nongnu.org; Mon, 03 Oct 2016 06:16:21 -0400 Received: from mx2.imag.fr ([2001:660:5301:59::17]:60611) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1br0IB-0003lJ-RJ for qemu-devel@nongnu.org; Mon, 03 Oct 2016 06:16:16 -0400 Received: from clopinette.imag.fr (clopinette.imag.fr [129.88.34.215]) by mx2.imag.fr (8.13.8/8.13.8) with ESMTP id u939QtMb022083 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES128-SHA bits=128 verify=NO) for ; Mon, 3 Oct 2016 11:26:56 +0200 Received: from z8-mb-tima.imag.fr (z8-mb-tima.imag.fr [129.88.4.36]) by clopinette.imag.fr (8.13.8/8.13.8) with ESMTP id u939Qu8s009972 for ; Mon, 3 Oct 2016 11:26:56 +0200 Date: Mon, 3 Oct 2016 11:26:56 +0200 (CEST) From: Antoine Faravelon Message-ID: <1375248660.1323127.1475486816092.JavaMail.zimbra@imag.fr> In-Reply-To: <442432985.1323034.1475486616906.JavaMail.zimbra@imag.fr> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Subject: [Qemu-devel] Trying to remove the TLB / What to do when device access fail with error code 2(not present) List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Good morning. I am currently trying to replace the TLB entirely but fail to do so. Indeed, while I seem to have managed to catch any call/access made to it, whenever I now try to read or write to a device, I get a failed access(code is 2, e.g. device not present). My addresses do seem to be good. Which leads me to ask, what should I do when I get such a failed access? What can I do so that qemu somehow allocate or wire up the device access? I work on x86_64 frontend and backend. Thanks for your time, Antoine.