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Re: [Xen-devel] reserve e820 ram


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.


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