From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:51966) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1WWCsI-0003bv-KZ for qemu-devel@nongnu.org; Fri, 04 Apr 2014 18:46:20 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1WWCsC-0002xg-58 for qemu-devel@nongnu.org; Fri, 04 Apr 2014 18:46:14 -0400 Received: from mail-qg0-f51.google.com ([209.85.192.51]:44525) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1WWCsC-0002xH-18 for qemu-devel@nongnu.org; Fri, 04 Apr 2014 18:46:08 -0400 Received: by mail-qg0-f51.google.com with SMTP id q108so4086756qgd.10 for ; Fri, 04 Apr 2014 15:46:06 -0700 (PDT) Date: Fri, 4 Apr 2014 18:46:05 -0400 From: Kevin O'Connor Message-ID: <20140404224605.GA10732@morn.localdomain> References: <1392965053-1069-1-git-send-email-yang.z.zhang@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1392965053-1069-1-git-send-email-yang.z.zhang@intel.com> Subject: Re: [Qemu-devel] [PATCH 0/5] xen: add Intel IGD passthrough support List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Yang Zhang Cc: peter.maydell@linaro.org, xen-devel@lists.xensource.com, stefano.stabellini@eu.citrix.com, weidong.han@intel.com, allen.m.kay@intel.com, qemu-devel@nongnu.org, jean.guyader@eu.citrix.com, anthony@codemonkey.ws, anthony.perard@citrix.com On Fri, Feb 21, 2014 at 02:44:08PM +0800, Yang Zhang wrote: > From: Yang Zhang > > The following patches are ported from Xen Qemu-traditional branch which are > adding Intel IGD passthrough supporting to Qemu upstream. > > To pass through IGD to guest, user need to add following lines in Xen config > file: > gfx_passthru=1 > pci=['00:02.0@2'] > > Besides, since Xen + Qemu upstream is requiring seabios, user also need to > recompile seabios with CONFIG_OPTIONROMS_DEPLOYED=y to allow IGD pass through > successfully: I'm not familiar with the Xen parts of your patch series. However, I don't think one should be compiling SeaBIOS with CONFIG_OPTIONROMS_DEPLOYED enabled. That option was for very old versions of Bochs and QEMU that did not support fetching of optionroms directly from PCI config space nor from fw_cfg. That compile time option is no longer well supported and it may be removed in the future. I suggest looking at getting one of the other mechanisms working instead of using CONFIG_OPTIONROMS_DEPLOYED. -Kevin From mboxrd@z Thu Jan 1 00:00:00 1970 From: Kevin O'Connor Subject: Re: [PATCH 0/5] xen: add Intel IGD passthrough support Date: Fri, 4 Apr 2014 18:46:05 -0400 Message-ID: <20140404224605.GA10732@morn.localdomain> References: <1392965053-1069-1-git-send-email-yang.z.zhang@intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <1392965053-1069-1-git-send-email-yang.z.zhang@intel.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+gceq-qemu-devel=gmane.org@nongnu.org Sender: qemu-devel-bounces+gceq-qemu-devel=gmane.org@nongnu.org To: Yang Zhang Cc: peter.maydell@linaro.org, xen-devel@lists.xensource.com, stefano.stabellini@eu.citrix.com, weidong.han@intel.com, allen.m.kay@intel.com, qemu-devel@nongnu.org, jean.guyader@eu.citrix.com, anthony@codemonkey.ws, anthony.perard@citrix.com List-Id: xen-devel@lists.xenproject.org On Fri, Feb 21, 2014 at 02:44:08PM +0800, Yang Zhang wrote: > From: Yang Zhang > > The following patches are ported from Xen Qemu-traditional branch which are > adding Intel IGD passthrough supporting to Qemu upstream. > > To pass through IGD to guest, user need to add following lines in Xen config > file: > gfx_passthru=1 > pci=['00:02.0@2'] > > Besides, since Xen + Qemu upstream is requiring seabios, user also need to > recompile seabios with CONFIG_OPTIONROMS_DEPLOYED=y to allow IGD pass through > successfully: I'm not familiar with the Xen parts of your patch series. However, I don't think one should be compiling SeaBIOS with CONFIG_OPTIONROMS_DEPLOYED enabled. That option was for very old versions of Bochs and QEMU that did not support fetching of optionroms directly from PCI config space nor from fw_cfg. That compile time option is no longer well supported and it may be removed in the future. I suggest looking at getting one of the other mechanisms working instead of using CONFIG_OPTIONROMS_DEPLOYED. -Kevin