Xen project Mailing List

RE: [Xen-devel] Re: [PATCH] VT-d: prevent dom0 to use VT-d HW

To: <chris.ace@xxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxx>

From: "Teo En Ming (Zhang Enming)" <enming.teo@xxxxxxxxxxxxxxx>

Date: Tue, 8 Sep 2009 19:51:14 +0800

Cc:

Delivery-date: Tue, 08 Sep 2009 04:51:42 -0700

List-id: Xen developer discussion <xen-devel.lists.xensource.com>

Thread-index: AcoweEQWDcz0dR4eSpmv8jPcWSTaMAAAlKZA

Dear Christian, Could you help to look at my problem? Thank you. Regards, Mr. Teo En Ming (Zhang Enming) Dip(Mechatronics Engineering) BEng(Hons)(Mechanical Engineering) Technical Support Engineer Information Technology Department Asiasoft Online Pte Ltd Tampines Central 1 #04-01 Tampines Plaza Singapore 529541 Republic of Singapore Mobile: +65-9648-9798 MSN: teoenming@xxxxxxxxxxx -----Original Message----- From: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx [mailto:xen-devel-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of Christian Tramnitz Sent: Tuesday, September 08, 2009 7:43 PM To: xen-devel@xxxxxxxxxxxxxxxxxxx Subject: [Xen-devel] Re: [PATCH] VT-d: prevent dom0 to use VT-d HW Han, Weidong wrote: > pv-ops dom0 contains Linux upstream VT-d driver, and will go to enable it when VT-d is set in kernel config file. It should not enable VT-d in dom0. > > Currently it already zaps ACPI DMAR signature to prevents dom0 using VT-d HW when VT-d is enabled for Xen. But when VT-d is not enabled for Xen, and VT-d is set in pv-ops kernel config file, pv-ops dom0 will go to enable it. This will results in pv-ops dom0 booting failure. This patch prevents dom0 to use VT-d HW whether VT-d is enabled or disabled for Xen. Wouldn't be easier (and more likely to be adopted by upstream) to add a Kconfig dependency like "depends on !XEN_DOM0" to VT-d? Best regards, Christian _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel No virus found in this incoming message. Checked by AVG - www.avg.com Version: 8.5.409 / Virus Database: 270.13.83/2352 - Release Date: 09/07/09 18:03:00 No virus found in this outgoing message. Checked by AVG - www.avg.com Version: 8.5.409 / Virus Database: 270.13.83/2352 - Release Date: 09/07/09 18:03:00 _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel

©2013 Xen Project, A Linux Foundation Collaborative Project. All Rights Reserved.
Linux Foundation is a registered trademark of The Linux Foundation.
Xen Project is a trademark of The Linux Foundation.