7. Running the OPAE in a Virtualized Environment
In SR-IOV mode, a host processor uses a physical function (PF) to access
management functions. A virtual machine (VM) uses a virtual function (VF) to access
the AFU.
Note:
Partial reconfiguration (PR) is not available in this mode.
Figure 4.
OPAE Driver in SR-IOV Mode
Virtual Machine
OPAE
(Driver in VF Mode)
OPAE
(Driver in SR-IOV Mode)
Host
FPGA
VF
PF
PCIe
Application
Application
An application running in a virtual machine that connects to a VF through OPAE cannot
initiate partial reconfiguration. The permission table in the FME enforces this
restriction. The permission table only allows partial reconfiguration through a PF.
Consequently, you must load the AFU image on the host before continuing with the
steps to create a virtualized environment.
Run the following command on the host to load the AFU image.
sudo fpgaconf \
$OPAE_PLATFORM_ROOT/hw/samples/nlb_mode_0/bin/nlb_mode_0.gbs
UG-20202 | 2019.08.05
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