Intel VT-d support

apmuthu

Well-Known Member
Feb 26, 2009
807
8
58
Chennai - India & Singapore
github.com
Do the QEMU versions in PVE 1.x and 2.x support the Intel VT-d feature for directed IO to enable graphic cards to be assigned to specific KVMs?

Use cases

technology called VT-d or (Intel Virtualisation Technology with Directed I/O). It’s also called an IOMMU. This feature like the more common VT-x provides hardware support to improve virtualisation. VT-d does to PCI devices what VT-x does for the CPU, by virtualising and allowing remapping of the DMA. Basically, what it means is that you can now freely assign different PCI connected devices (like graphics card, USB host controllers) to your Virtual Machines. A use case would be to give a VM a real graphics card so it doesn’t have to rely on the slow virtualised graphics adapter.
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VT-d is unavailable in pretty much all P67/H67 chipsets.
 

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