APPLIED: [PATCH 0/1][aws][v2] net: ena: Fix redundant device NUMA node override

[Philip Cox]

On Wed, 2024-07-24 at 15:26 +0300, Philip Cox wrote:
> 
> BugLink: https://bugs.launchpad.net/bugs/2067516
> 
> 
> 
> SRU Justification:
> 
> [Impact]
> 
> We discovered a network packets per second (PPS) performance issue in
> one of our upcoming EC2 instance platform on Graviton.The issue is
> addressed by setting a value for the numa_cma parameter. While this
> parameter is supported in 24.04, the parameter is not available in
> 22.04 or 20.04 today, which could impact customers running 22.04 or
> 20.04 on the new EC2 platform.
> 
> [Fix]
> 
> We are requesting that the following changes be backported to 24.04
> to fix a performance issue with NUMA node overrides for AWS EC2 ENA
> adapaters:
> https://github.com/torvalds/linux/commit/2dc8b1e7177d4f49f492ce648440caf2de0c366
> 
> 
> 
> [Test Plan]
> aws tested
> 
> [Where problems could occur]
> The patch changes how the driver uses shared memory NUMA node id
> advertised by the underlying device.
> 
> If any newly written code assumes the old behaviour, errors could
> arise. 
> 
> [Other info]
> sf# 00385923
> 

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