PCIe directed speed changes are not supported. |
Only automatic down-training at boot time is supported. |
Invalid memory read fault may cause FIM to lock. |
- The FIM locks after the AFU sends a memory read to invalid address.
- Workaround: Power cycle the system to reinitialize the Intel® PAC with Intel® Arria® 10 GX FPGA and recover from this issue. Refer to the Knowledge Base entry for more information.
- Status: Fix targeted for a future version of the Intel® Acceleration Stack.
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Designs may not function properly when a customer loads a second AFU. |
- Designs may not function properly when a customer loads an AFU for a second time using fpgaconf.
- Workaround: Power cycle the system to reinitialize the Intel® PAC with Intel® Arria® 10 GX FPGA so that you can use fpgaconf to load another AFU. For more information, refer to the Identifying and Updating the FIM section of the Intel® Acceleration Stack Quick Start Guide for Intel® Programmable Acceleration Card with Intel® Arria® 10 GX FPGA .
- Status: Fix targeted for a future version of the Intel® Acceleration Stack.
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Streaming DMA only supports access to host memory. |
- The streaming DMA basic building blocks (BBBs) can access host or FPGA memory, but the driver does not provide any means for accessing FPGA memory.
- Status: This limitation will be fixed in a future version of the driver.
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Memory-to-stream DMA does not assert start-of-packet (SOP) at the beginning of a packet transfer. |
- The memory-to-stream DMA supports packet transfers but it currently does not assert start-of-packet (SOP) at the beginning of a packet transfer.
- Status: This limitation will be fixed in a future version of the driver.
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Length argument to the driver is ignored when performing a non-deterministic length stream-to-memory transfer. |
- When performing a non-deterministic length stream-to-memory transfer, the length argument to the driver is ignored.
- Workaround: To prevent the DMA from overflowing, the host buffer ensures that it is sufficiently sized so that the stream-to-memory DMA receives an end-of-packet (EOP) before overflowing the host buffer.
- Status: This limitation will be fixed in a future version of streaming DMA.
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Virtual Function (VF) may fail to attach or detach when using the Linux* Red Hat* 3.10 kernel. |
The VF failure to attach or detach is a known issue with qemu/kvm and libvirt. Refer to the Red Hat* website for more information about this issue. |