From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([140.186.70.92]:43492) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1QwXxk-0006uJ-P7 for qemu-devel@nongnu.org; Thu, 25 Aug 2011 07:19:09 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1QwXxj-0001YF-NJ for qemu-devel@nongnu.org; Thu, 25 Aug 2011 07:19:08 -0400 Received: from mx1.redhat.com ([209.132.183.28]:38276) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1QwXxj-0001Y7-CC for qemu-devel@nongnu.org; Thu, 25 Aug 2011 07:19:07 -0400 Message-ID: <4E562FA7.7060803@redhat.com> Date: Thu, 25 Aug 2011 14:19:03 +0300 From: Avi Kivity MIME-Version: 1.0 References: <3d9d904a1e4939a147f8954c9e0d4cdaf3d44c31.1314033132.git.jan.kiszka@siemens.com> <4E55F799.2050103@redhat.com> <4E5610E7.1030609@siemens.com> <4E5612F0.1030309@redhat.com> <4E561422.2000304@siemens.com> <4E5627E3.4070507@redhat.com> <4E562925.30100@siemens.com> In-Reply-To: <4E562925.30100@siemens.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Subject: Re: [Qemu-devel] [PATCH v3 5/6] vga: Use linear mapping + dirty logging in chain 4 memory access mode List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Jan Kiszka Cc: Anthony Liguori , qemu-devel , Gerd Hoffmann On 08/25/2011 01:51 PM, Jan Kiszka wrote: > > > > Plain F15 is slow. SR2 = SR4 = 0. > > So it's not using chain4 mode. Can you check what mode the adapter is > actually in and how VRAM is accessed? Likely, there is nothing we can do > about it. /me just wonders what makes F15 grub behave differently from > other distro's versions... > Do you remember offhand which registers I need to look at? We need a collection of gdb scripts to find a qdev, dump the memory hierarchy, look up gpas, and get info about specific devices. -- I have a truly marvellous patch that fixes the bug which this signature is too narrow to contain.