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UBUNTU: [Config] Intel Sapphire Rapids HBM support needs CONFIG_NUMA_EMU
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BugLink: https://bugs.launchpad.net/bugs/2008745

Currently Ubuntu kernel has this kernel config disabled.
But in some cases, Intel's Sapphire Rapids High Bandwith
Memory (SPR-HBM) needs this option.

Memory bandwidth has been a bottleneck of increasingly memory bound
workloads. Sapphire Rapids plus HBM is specifically targeted to
cater to these workloads, traditionally served using overprovisioning
of memory devices.

Signed-off-by: Michael Reed <Michael.Reed@canonical.com>
Acked-by: Tim Gardner <tim.gardner@canonical.com>
Acked-by: Andrei Gherzan <andrei.gherzan@canonical.com>
Signed-off-by: Roxana Nicolescu <roxana.nicolescu@canonical.com>
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Michael Reed authored and Roxana Nicolescu committed Jul 7, 2023
1 parent 72fa4ba commit 8fbb190
Showing 1 changed file with 1 addition and 1 deletion.
2 changes: 1 addition & 1 deletion debian.master/config/annotations
Original file line number Diff line number Diff line change
Expand Up @@ -437,7 +437,7 @@ CONFIG_NUMA note<'LP: #1557690'>
CONFIG_NUMA_BALANCING_DEFAULT_ENABLED policy<{'amd64': 'y', 'arm64': 'y', 'ppc64el': 'y', 'riscv64': 'y', 's390x': 'n'}>
CONFIG_NUMA_BALANCING_DEFAULT_ENABLED note<'LP: #1557690'>

CONFIG_NUMA_EMU policy<{'amd64': 'n'}>
CONFIG_NUMA_EMU policy<{'amd64': 'y'}>
CONFIG_NUMA_EMU note<'LP: #1864198'>

CONFIG_NVMEM policy<{'amd64': 'y', 'arm64': 'y', 'armhf': 'y', 'ppc64el': 'y', 'riscv64': 'y', 's390x': 'n'}>
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