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From: Jeremy Fitzhardinge <jeremy@goop.org>
To: "Han, Weidong" <weidong.han@intel.com>
Cc: "xen-devel@lists.xensource.com" <xen-devel@lists.xensource.com>,
	"Kay, Allen M" <allen.m.kay@intel.com>,
	"'Keir.Fraser@eu.citrix.com'" <Keir.Fraser@eu.citrix.com>
Subject: Re: [PATCH] VT-d: prevent dom0 to use VT-d HW
Date: Wed, 09 Sep 2009 15:32:08 -0700	[thread overview]
Message-ID: <4AA82CE8.1040106@goop.org> (raw)
In-Reply-To: <715D42877B251141A38726ABF5CABF2C054B5B4A8A@pdsmsx503.ccr.corp.intel.com>

On 09/07/09 19:24, 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. 
>   

Which tree is this against?  My dom0 tree doesn't have
drivers/passthrough/vtd/.  Is there a branch you'd like me to pull in?

Thanks,
    J

  parent reply	other threads:[~2009-09-09 22:32 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-09-08  2:24 [PATCH] VT-d: prevent dom0 to use VT-d HW Han, Weidong
2009-09-08 11:43 ` Christian Tramnitz
2009-09-08 11:51   ` Teo En Ming (Zhang Enming)
2009-09-08 14:07   ` Ian Jackson
2009-09-08 14:14     ` Keir Fraser
2009-09-09 22:32 ` Jeremy Fitzhardinge [this message]
2009-09-09 22:35   ` Kay, Allen M
2009-09-09 22:41     ` Jeremy Fitzhardinge

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