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[SRU,J/K/L,1/1] UBUNTU: [Config] Intel Sapphire Rapids HBM support needs CONFIG_NUMA_EMU

Message ID 20230614192911.16448-2-michael.reed@canonical.com
State New
Headers show
Series Intel Sapphire Rapids HBM support needs CONFIG_NUMA_EMU | expand

Commit Message

Michael Reed June 14, 2023, 7:29 p.m. UTC 
From: Michael Reed <Michael.Reed@canonical.com>

UBUNTU: [Config] Intel Sapphire Rapids HBM support needs CONFIG_NUMA_EMU

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>
---
 debian.master/config/annotations | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

diff --git a/debian.master/config/annotations b/debian.master/config/annotations
index 4ec75d62e3ec..7b27536b0b20 100644
--- a/debian.master/config/annotations
+++ b/debian.master/config/annotations
@@ -432,7 +432,7 @@  CONFIG_NUMA                                     note<'LP:1543165 LP:1557690'>
 CONFIG_NUMA_BALANCING_DEFAULT_ENABLED           policy<{'amd64': 'y', 'arm64': 'y', 'ppc64el': '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', 's390x': 'n'}>