From mboxrd@z Thu Jan  1 00:00:00 1970
From: "Han, Weidong" <weidong.han@intel.com>
Subject: RE: Failed to use PCI device assignment
Date: Sat, 13 Dec 2008 10:12:46 +0800
Message-ID: <715D42877B251141A38726ABF5CABF2C018E6FB3F6@pdsmsx503.ccr.corp.intel.com>
References: <C73E24C82E7BEB4D80A3204E0BA00055915D0B@rennsmail04.eu.thmulti.com>
Mime-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: 8BIT
To: 'Courtay Olivier' <Olivier.Courtay@thomson.net>,
	"'kvm@vger.kernel.org'" <kvm@vger.kernel.org>
Return-path: <kvm-owner@vger.kernel.org>
Received: from mga02.intel.com ([134.134.136.20]:43391 "EHLO mga02.intel.com"
	rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP
	id S1753569AbYLMCMx convert rfc822-to-8bit (ORCPT
	<rfc822;kvm@vger.kernel.org>); Fri, 12 Dec 2008 21:12:53 -0500
In-Reply-To: <C73E24C82E7BEB4D80A3204E0BA00055915D0B@rennsmail04.eu.thmulti.com>
Content-Language: en-US
Sender: kvm-owner@vger.kernel.org
List-ID: <kvm.vger.kernel.org>

Courtay Olivier wrote:
> Hi,
> 
> I try to use PCI device assignment on a 2.6.28-rc8 with kvm-80 on a
> Intel that support VT-D. 
> 
> I have a error:
> 
> # qemu-system-x86_64 -pcidevice host=00:19.0 -hda  WinXP.img  -cdrom
> /dev/scd0  -m 1024 Warning: No DNS servers found
> create_userspace_phys_mem: Invalid argument
> kvm_cpu_register_physical_memory: failed
> 
> Where 00:19.0 is a e100e intel Ethernet card. I have removed the
> driver before launch. 
> 
> I have compiled qemu in DEBUG mode but none interesting information.
> 

You can enable DEVICE_ASSIGNMENT_DEBUG in qemu/hw/device-assignment.c to get more information. 

I suspect your error is not related to device asisgnment. Otherwise, it should output "assigned_dev_iomem_map: Error: create new mapping failed".

Regards,
Weidong