APPLIED: [f/j/m:linux-aws][PATCH 0/1] tcp: Add memory barrier to tcp_push

[Philip Cox]

On Thu, Feb 22, 2024 at 1:31 PM Philip Cox <philip.cox at canonical.com> wrote:

>
> BugLink: https://bugs.launchpad.net/bugs/2051727
>
> SRU Justification:
>
> [Impact]
>
> Recently a patch has been accepted on the Linux Kernel
> regarding the TCP stack which fix an additional +40ms
> latency on ARM64 CPU architecture without impacting
> other CPU types.
>
> [Fix]
>
> Upstream patch:
>    7267e8dcad6b2f9fce05a6a06335d7040acbc2b6: tcp: Add memory barrier to
> tcp_push()
> was submitted to address this.
>
> [Test Plan]
>
> AWS tested
>
> [Where problems could occur]
>
> The risk of regressions from this change is fairly low.
>
> --
>
>
> Salvatore Dipietro (1):
>   tcp: Add memory barrier to tcp_push()
>
>  net/ipv4/tcp.c | 1 +
>  1 file changed, 1 insertion(+)
>
> --
> 2.34.1
>
>
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