** Also affects: linux (Ubuntu Kinetic)
Importance: Undecided
Status: New
** Also affects: linux (Ubuntu Lunar)
Importance: Medium
Assignee: Michael Reed (mreed8855)
Status: Incomplete
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https://bugs.launchpad.net/bugs/2008745
Title:
[SRU] Intel Sapphire Rapids HBM support needs CONFIG_NUMA_EMU
Status in linux package in Ubuntu:
Incomplete
Status in linux source package in Jammy:
Incomplete
Status in linux source package in Kinetic:
New
Status in linux source package in Lunar:
Incomplete
Bug description:
[Impact]
Currently Ubuntu kernel has this kernel config disabled.
But in some case, Intel's SPR-HBM needs this.
Please search the keyword "fake numa" in
https://community.intel.com/t5/Blogs/Products-and-
Solutions/HPC/Enabling-High-Bandwidth-Memory-for-HPC-and-AI-
Applications-for/post/1335100
[Fix]
Enable CONFIG_NUMA_EMU in our kernel config for 5.15 and later
[Test Plan]
[Where problems could occur]
The regression risk is low
[Other Info]
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