APPLIED: [SRU][N:linux][PATCH 0/1] power: intel_pstate: Fix unchecked MSR

[Stefan Bader]

On 19/12/2025 16:10, Thibault Ferrante wrote:
> BugLink: https://bugs.launchpad.net/bugs/2130244
> 
> [ Impact ]
> 
>   * Access to trying to access /sys/devices/system/cpu/intel_pstate/no_turbo on Skylake-X systems trigger an unchecked MSR access error: WRMSR to 0x199 (attempted to write 0x0000000100001300).
> 
> [ Fix ]
> 
>   * Clean cherry-pick from upstream:
>    ac4e04d9e378 cpufreq: intel_pstate: Unchecked MSR aceess in legacy mode
> 
> [ Test Plan ]
> 
>   * Compiled.
> 
> [ Where problems could occur ]
> 
>   * Regression in turbo management in intel hardware.
> 
> [ Other Info ]
> 
>   * This is a public version of: https://bugs.launchpad.net/bugs/2115105
>   * Already integrated in Plucky with https://bugs.launchpad.net/bugs/2113881
> 
> Srinivas Pandruvada (1):
>    cpufreq: intel_pstate: Unchecked MSR aceess in legacy mode
> 
>   drivers/cpufreq/intel_pstate.c | 3 +++
>   1 file changed, 3 insertions(+)
> 


Applied to noble:linux/master-next. Thanks.

-Stefan

-------------- next part --------------
A non-text attachment was scrubbed...
Name: OpenPGP_0xE8675DEECBEECEA3.asc
Type: application/pgp-keys
Size: 48643 bytes
Desc: OpenPGP public key
URL: <https://lists.ubuntu.com/archives/kernel-team/attachments/20260108/20b0533f/attachment-0001.key>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: OpenPGP_signature.asc
Type: application/pgp-signature
Size: 833 bytes
Desc: OpenPGP digital signature
URL: <https://lists.ubuntu.com/archives/kernel-team/attachments/20260108/20b0533f/attachment-0001.sig>