OK, thanks for the answer, that's what I'm just doing.
Hello, I'm trying to use SR-IOV features of 10 GB Intel mezzanine cards on M610 server. the chip is intel 82599EB , so SR-IOV should be supported. Anyway, on Linux when I try this, all I have is : ixgbe 0000:04:00.1: not enough MMIO resources for SR-IOV[  157.402847] ixgbe 0000:04:00.1: (unregistered net_device): Failed to enable PCI sriov: -12 This is with Latest linux kernel (3.1.4). Tried to boot with intel_iommu=on, but this doesn't change anything. On some papers, I see a global bios option to activate SR-IOV, but M610 lack this option, even with latest BIOS (6.0.7), whereas R610 seems to have it. IS SR-IOV impossible on M610 ?  
SR-IOV impossible on M610 ?