Oracle Linux 7.2 or Red Hat Enterprise Linux (RHEL) 7.2 installation might fail with an AER error on a system with four or more Sun InfiniBand Dual Port 4x QDR PCIe Low Profile Host Channel Adapter M2 Cards.
Workaround
Access the BIOS Setup Utility.
Navigate to RC Settings > QPI and change:
MMIOH Size per IOH from 2Gb to 4Gb (the default is 2Gb).
Navigate to RC Settings > Chipset > NorthBridge Configuration and change:
PCIE-MMIO-64 Bits Support to Enabled (the default is Disabled).
Save your changes and exit the BIOS Setup Utility.
Finish the operating system installation.