HPE ProLiant DL380 Gen9 address decoding scheme

[PVacca]

Is it possible to find the address decoding scheme for the HPE ProLiant DL380 Gen9? Attempting to use memtest86 and would like to be able to properly map memory addresses to DIMM slot/channel.

What i'm looking for if possible: (From memtest troubleshooting page)

If I know the address decoding scheme, can I configure MemTest86 to report the failing module?

For systems where the address decoding scheme is known, MemTest86 provides several configuration file parameters to aid users in determining the faulty module that corresponds to the memory address:

  ADDR2CHBITS=12,9,7
  ADDR2SLBITS=3,4
  ADDR2CSBITS=8

For each of these 3 parameters, a list of bit positions can be used to specify which address bits of a memory address to exclusive-or (XOR) in order to determine the corresponding [memory channel|slot|chip select (CS)] (0 or 1) of the failing module. This is only useful if you know that the memory controller maps a particular address to a [memory channel|slot|chip select (CS)] using this XOR-based decoding scheme. If these parameters are specified and MemTest86 detects a memory error, the [memory channel|slot|chip select (CS)] will be calculated and displayed along with the faulting address.

[support_s]

System recommended content:

1. SimpliVity OmniStack Solution with HPE ProLiant DL380 Gen9 Hardware Installation and Maintenance Guide (Release 3.6.2 U1, Rev A)

2. Advisory: ProLiant Gen8 and Gen9 Series Servers - CUSTOMER ACTION REQUIRED: Some System ROMs That Addressed the Side Channel Analysis Vulnerability Have Been Removed from the HPE Download Site

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[Suman_1978]

Hi,

There are some resources outside, please see if they can help your query.

https://stackoverflow.com/questions/41107702/how-to-programmatically-get-physical-memory-address-range-in-linux
https://unix.stackexchange.com/questions/108035/is-it-possible-to-find-the-physical-address-range-of-a-dimm
https://www.linuxtechi.com/dmidecode-command-examples-linux/

Thank You!
I work with HPE but opinions expressed here are mine.
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