Re: [Xen-devel] reserve e820 ram

[Tim Deegan <tim@xxxxxxx>]

Hi, 

Can you please set up your mail client to indent quoted text?  It's not
clear which parts of your email are quoted and which are your replies.

At 13:53 +0100 on 11 Apr (1334152395), Francisco Rocha wrote:
> You can handle the second by using
> stub domains to run qemu in a different domain, or by only usoing PV
> domUs.
> 
> If I use the stub domain provided with xen the dom0 will not perform the 
> second mapping, right?

Yes; instead, the stub domain will perform it - so you'll need to allow
that to happen.  (Basically the stub domain's code lives inside the
guest's protection boundary, like its BIOS code &c).

> The third is pretty much a requirement if the domU's going to do
> any I/O via dom0, but at least with grant tables the ACL is under domU's
> control.  Or if you have an IOMMU you can give the domU direct access to
> its own network card and disk controller.
> 
> I only have one ethernet card but i can get an ethernet expresscard.
> 
> Can I do this in my the machine that gives me the output that follows?
> 
> (XEN) Intel VT-d Snoop Control not enabled.
> (XEN) Intel VT-d Dom0 DMA Passthrough not enabled.
> (XEN) Intel VT-d Queued Invalidation enabled.
> (XEN) Intel VT-d Interrupt Remapping enabled.
> (XEN) Intel VT-d Shared EPT tables not enabled.

Yes; you should be able to do it on this machine without changing any
BIOS settings.

Tim.

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