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xen-users
Re: [Xen-users] How many nics in domU
Andrew Ross wrote:
> The maximum number of virtual network interfaces you can create for each
> domU is 3
> I seem to recall reading somewhere that this was because a static
> structure is used, instead of one which can be dynamically grown. I'm
> afraid I can't remember why I got that idea from, though.
Just found this at
http://lists.xensource.com/archives/html/xen-devel/2006-07/msg00424.html
"We need to add a hypercall to xen to allow a guest to extend the size
of it's grant table. This should be straightforward, but in its
current absence is the restriction which leads to the current ``max 3
VIF's per guest'' limit. Actually, this restriction could also be
solved by making the allocation of grant table entries to a VIF
dynamic, as already happens with the blkfront driver. We should
implement both strategies forthwith."
It isn't the original source of my information, but does confirm it.
Cheers
Andrew
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