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I hope it's ok to ask this here because most Desktop users don't care about IOMMU.
For my desktop system I want IOMMU for the virtualization(I want to pass the NIC straight to the guest...kvm). I decided to get the Intel i5-2400 which has the IOMMU. However, since this feature isn't that popular with most desktop users I am having problem finding a motherboard that will support these IOMMU feature for sure. Can anyone help?
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IOMMU isn't generally mentioned as a motherboard feature. It's more likely to be a feature of the chipset, and Northbridge in particular. Maybe checking what chipsets support it might be a better approach. I imagine you will find support in AMD & even in Intel chipsets, as both have released standards on it.
Yes, the chipset has to support it. I did my research and the Intel i5-2400 does support it. However, the motherboard must support it also, and this is where I am having trouble finding a motherboard for this socket that clearly states it supports it.
You wont find many motherboards that specify IOMMU support...because that was the AMD term for VT-D-
I/O MMU virtualization (AMD-Vi and VT-d)
Main article: IOMMU
An input/output memory management unit (IOMMU) enables guest virtual machines to directly use peripheral devices, such as Ethernet, accelerated graphics cards, and hard-drive controllers, through DMA and interrupt remapping. This is sometimes called PCI passthrough. Both AMD and Intel have released specifications:
AMD's I/O Virtualization Technology, "AMD-Vi", originally called "IOMMU".
Intel's "Virtualization Technology for Directed I/O" (VT-d).