RE: [Xen-devel] We still have to disable vtd for old chipset?

["Kay, Allen M" <allen.m.kay@xxxxxxxxx>]

It should work assuming your BIOS is reporting VT-d correctly.  At least
the page table sharing should no longer be the issue.

Allen 

>-----Original Message-----
>From: Neo Jia [mailto:neojia@xxxxxxxxx] 
>Sent: Tuesday, June 03, 2008 8:23 AM
>To: Kay, Allen M
>Cc: xen-devel@xxxxxxxxxxxxxxxxxxx
>Subject: Re: [Xen-devel] We still have to disable vtd for old chipset?
>
>So, Xen VT-d should work on my system (pre-retail)?
>
>Thanks,
>Neo
>
>On Tue, Jun 3, 2008 at 8:19 AM, Kay, Allen M 
><allen.m.kay@xxxxxxxxx> wrote:
>> This check was needed as some earlier versions of server 
>platform does
>> not support p2m/vt-d page table sharing.
>>
>> Since now we have separate page tables, we don't need that check
>> anymore.  You can just remove the check locally to get it to work on
>> your system.
>>
>> We will submit a patch to remove it in the upstream.
>>
>> Allen
>>
>>>-----Original Message-----
>>>From: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx
>>>[mailto:xen-devel-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of Neo Jia
>>>Sent: Monday, June 02, 2008 6:01 PM
>>>To: xen-devel@xxxxxxxxxxxxxxxxxxx
>>>Subject: [Xen-devel] We still have to disable vtd for old chipset?
>>>
>>>I am seeing the following error message in xm dmesg.
>>>
>>>(XEN) [VT-D]utils.c:59: *** VT-d disabled - pre C0-step Seaburg found
>>>(XEN) [VT-D]utils.c:62: ***  vendor = 8086 device = 4000 
>revision = 10
>>>
>>>This is on Dell T7400. And the change is
>>>http://lists.xensource.com/archives/html/xen-changelog/2007-09/
>>>msg00284.html.
>>>
>>>So, I am wondering if there is any fix for this?
>>>
>>>Thanks,
>>>Neo
>>>--
>>>I would remember that if researchers were not ambitious
>>>probably today we haven't the technology we are using!
>>>
>>>_______________________________________________
>>>Xen-devel mailing list
>>>Xen-devel@xxxxxxxxxxxxxxxxxxx
>>>http://lists.xensource.com/xen-devel
>>>
>>
>
>
>
>-- 
>I would remember that if researchers were not ambitious
>probably today we haven't the technology we are using!
>

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