[dundee] Xen ... Pcie Pass through...HMV

[Sean McRobbie]

I think this has been mature for over a year now as we looked into roughly a year ago.

Have never actually tried it as it turned out we didn't need to PBX card (anyone want an asterisk card?), but I believe it should work on  paravirt vms too? Don't see why it wouldn't? Hmm..

Regards,
Sean McRobbie

----- Original Message -----
From: "gordon dunlop" <astrozubenel at googlemail.com>
To: toxicnaan at yahoo.co.uk, "Tayside Linux User Group" <dundee at lists.lug.org.uk>
Sent: Tuesday, 10 March, 2009 08:35:24 GMT +00:00 GMT Britain, Ireland, Portugal
Subject: Re: [dundee] Xen ... Pcie Pass through...HMV





2009/3/8 Lee Hughes < toxicnaan at yahoo.co.uk > 


Hello all (gordon will like this). 

Seems Xen have finally got pcie pass through working with xen HVM domians in DOMu. 

Unfortunately I don't the require chipset to allow me to test this (it needs intel vt-d ) 
which gives an IOMMU. 


I have only got a dual core Opteron socket 939 which has no inbuilt vt instructions therefore I cannot run unmodified Linux guests in Xen. 



What this basically means is, you'll be able to run Xen, with either a linux system in Dom0 
or domU, and windows system in DomU and play direct X games, without rebooting. ;-) 

It's got lots of other uses to, like improving a vm's IO prerformance , heheeheh 

Check it out here 

http://wiki.xensource.com/xenwiki/VTdHowTo 

http://www.nabble.com/Successful-PCIe-Graphics-VT-d-Passthrough-to-Win32-DomU,-Q35-chipset-td21671745.html 


Very interesting links Lee, although you will need a motherboard with 2 graphics card slots. 

Gordon 



I'd say this is a interesting development. It's early days, so I guess it's not too stable. 
Who can tell. 

So if you have this chipset, please give it a try...... 

I've also heard some crazy talk about bios vendors building hypervisors into the bios's. 
So, you can just parition your machine, without the aid additional software. 

Crazy stuff. 



Cheers, 
Lee 



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