Version Found: v1.04.a
Version Resolved and other Known Issues: See (Xilinx Answer 44969)
If the AXI Bridge for PCI Express v1.04.a core receives short Memory Write packets, the link might train down.
This is a known issue which is due to be fixed in the next release of the core.
Note: "Version Found" refers to the version where the problem was first discovered.
The problem might also exist in earlier versions, but no specific testing has been performed to verify earlier versions.