the kvm link looks promising, there are lose ends (f.e. device reset) but I'll give it a shot.
not now though i'll be away for 4 days, so i'll try it next monday and post back.
I have read the virtualbox manual, but i'm abit fuzzy about about the IOMMU stuff...
( i dont have the pc in front of me right now to check, so i'll go about guessing abit )
the MoBo is ASUS P5Q-Pro, the cpu is core 2 duo E8400 @ 3GHz
There is an option to enable virtualization extensions (Intel Virtualization Tech) in the BIOS but nothing explicitly stating IOMMU (if I remember correctly - I checked the MoBo manual and there is no reference to IOMMU).
I think the kernel is pci-passthrough 'ready', i have made sure to include the pci_stub driver and the DMAR option. dmesg doesn't seem to output prominent messages though
root@samothraki:/usr/src/linux# dmesg | grep -i dmar
root@samothraki:/usr/src/linux# dmesg | grep -i pci-dma
PCI-DMA: Using software bounce buffering for IO (SWIOTLB)
so i'm not sure if i'm hardware supported for this stuff.. what do you make of it?
I haven't tried XEN and would like to avoid it for as long as I can, I like the hierarchy of a primary OS on a system.. Still I'm not ruling it out, but I would try it elsewhere and not on a production system to begin with
Thank you for the help, i'll get back to you with results for the KVM way to unbind the card.