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

[Manuel Diewald]

On Fri, Feb 02, 2024 at 04:22:18PM -0500, 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(-)
> 
> -- 
> 2.40.1
> 
> 
> -- 
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> kernel-team at lists.ubuntu.com
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The LP bug targets Lunar, I think this needs to be changed to Jammy.

Acked-by: Manuel Diewald <manuel.diewald at canonical.com>

-- 
 Manuel