ACK: [SRU][jammy:linux-aws][PATCH 0/1] arm64: pauth: don't sign leaf functions

[Tim Gardner]

On 2/2/24 2:22 PM, Kevin Becker wrote:
> BugLink: https://bugs.launchpad.net/bugs/2043811
> 
> [Impact]
> 
> Amazon sent the following request: From our experiments, we found that not
> signing leaf functions on AWS arm64 Graviton instances helps improve
> application performance. We would like to have the patch
> https://github.com/torvalds/linux/commit/c68cf5285e1896a2b725ec01a1351f08610165b8
> backported to Ubuntu 5.15 AWS kernels. We saw some of these performance
> improvements: NGINX 1%, MySQL 2%, PyTorch 2%
> 
> [Test Plan]
> 
> Amazon has tested on AWS.
> 
> [Regression Potential]
> 
> Arm64 binaries may not work correctly.
> 
> [Other Info]
> 
> SF: #00372369
> 
> Kevin Becker (1):
>    arm64: pauth: don't sign leaf functions
> 
>   arch/arm64/Makefile | 22 ++++++++--------------
>   1 file changed, 8 insertions(+), 14 deletions(-)
> 
Acked-by: Tim Gardner <tim.gardner at canonical.com>
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Tim Gardner
Canonical, Inc