ACK: [PATCH 0/1][SRU][M] Unable to power off the system with MTL CPU

[Roxana Nicolescu]

On 18/10/2023 03:00, AceLan Kao wrote:
> From: "Chia-Lin Kao (AceLan)" <acelan.kao at canonical.com>
>
> BugLink: https://bugs.launchpad.net/bugs/2039405
>
> [Impact]
> The commit introduced from v6.4 leads to the power off issue
> 45e34c8af58f x86/smp: Put CPUs into INIT on shutdown if possible
>
> [Fix]
> The problematic commit has been reverted since v6.6
> fbe1bf1e5ff1 Revert "x86/smp: Put CPUs into INIT on shutdown if possible"
>
> [Test case]
> 1. Power up the MTL system
> 2. Power off the system and make sure it shutdown correctly
>
> [Where problems could occur]
>  From the origin commit log, revert the commit may have a protential security issue.
>
> Linus Torvalds (1):
>    Revert "x86/smp: Put CPUs into INIT on shutdown if possible"
>
>   arch/x86/include/asm/smp.h |  2 --
>   arch/x86/kernel/smp.c      | 39 +++++++-------------------------------
>   arch/x86/kernel/smpboot.c  | 27 --------------------------
>   3 files changed, 7 insertions(+), 61 deletions(-)
>
Acked-by: Roxana Nicolescu <roxana.nicolescu at canonical.com>