Adapter M2 Cards (22686146); False Mce Errors Appear In /Var/Log/Mcelog (Cr 7104293) - Oracle Sun Fire X4800 Product Notes

Oracle and Red Hat Linux 7.2 Installation Fails With AER Error on Systems With Four or More Sun InfiniBand Dual Port 4x QDR
PCIe Low Profile Host Channel Adapter M2 Cards (22686146)
Oracle and Red Hat Linux 7.2 Installation Fails With AER
Error on Systems With Four or More Sun InfiniBand Dual
Port 4x QDR PCIe Low Profile Host Channel Adapter M2
Cards (22686146)
Oracle Linux 7.2 or Red Hat Linux 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.
Note -
QDR PCIe Low Profile Host Channel Adapter M2 Cards.
Workaround
1. Access the BIOS Setup Utility.
2. Navigate to RC Settings > QPI and change:
MMIOH Size per IOH from 2Gb to 4Gb (the default is 2Gb).
3. Navigate to RC Settings > Chipset > NorthBridge Configuration and change:
PCIE-MMIO-64 Bits Support to Enabled (the default is Disabled).
4. Save your changes and exit the BIOS Setup Utility.
5. Finish the operating system installation.

False MCE Errors Appear in /var/log/mcelog (CR 7104293)

Occasionally, many errors appear in the MCE log, /var/log/mcelog. For example:
CPU 0 BANK 9 MCG status:
MCi status:
Error enabled
MCA: MEMORY CONTROLLER GEN_CHANNELunspecified_ERR
Transaction: Generic undefined request
STATUS 900000400009008f MCGSTATUS 0
If this is a one-time or an occasional event, you can ignore it. It should not impact
■
performance.
If the errors persist, contact Oracle Services for further review. Open a support case with
■
Oracle Services and reference (Doc ID #1459158.1) for further analysis and evaluation.
52 Sun Fire X4800 Server Product Notes • July 2017
The Sun Fire X4800 server supports a maximum of six Sun InfiniBand Dual Port 4x