Enabling I/O Virtualization

Before you can configure SR-IOV virtual functions, you must enable I/O virtualization for the PCIe bus while the root domain is in a delayed reconfiguration. Reboot the domain to make this change take effect.

How to Enable I/O Virtualization for a PCIe Bus

This procedure needs to be performed only one time per root complex. The root complex must be running as part of the same SP configuration.

1. Initiate a delayed reconfiguration on the root domain.

   primary# ldm start-reconf root-domain-name

2. Enable I/O virtualization operations for a PCIe bus.

   Perform this step only if I/O virtualization is not enabled already for the bus that has the physical function.

   Run one of the following commands:

   • Enable I/O virtualization if the specified PCIe bus already is assigned to a root domain.

     primary# ldm set-io iov=on bus

   • Enable I/O virtualization while you add a PCIe bus to a root domain.

     primary# ldm add-io iov=on bus

3. Reboot the root domain.

   Run one of the following commands:

   • Reboot the non-primary root domain.

     primary# ldm stop-domain -r root-domain

   • Reboot the primary root domain.

     primary# shutdown -i6 -g0 -y