* x86/tsc: Trust initial offset in architectural TSC-adjust MSRs
@ 2024-05-27 11:11 Daniel J Blueman
2024-05-27 18:10 ` Greg KH
0 siblings, 1 reply; 2+ messages in thread
From: Daniel J Blueman @ 2024-05-27 11:11 UTC (permalink / raw)
To: stable
On present kernels, HPET fallback occurs on some 8-16 socket x86
systems due to the TSC adjust architectural MSR not being respected.
This was fixed upstream in commit 455f9075f14484f358b3c1d6845b4a438de198a7.
Please backport this fix to -stable for 6.9, 6.8, 6.6, 6.1, 5.15,
5.10, 5.4 and 4.19 branches to allow correct TSC operation on existing
distros using these kernels. The patch cleanly applies to all of these
latest -stable branches.
Many thanks,
Daniel
--
Daniel J Blueman
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: x86/tsc: Trust initial offset in architectural TSC-adjust MSRs
2024-05-27 11:11 x86/tsc: Trust initial offset in architectural TSC-adjust MSRs Daniel J Blueman
@ 2024-05-27 18:10 ` Greg KH
0 siblings, 0 replies; 2+ messages in thread
From: Greg KH @ 2024-05-27 18:10 UTC (permalink / raw)
To: Daniel J Blueman; +Cc: stable
On Mon, May 27, 2024 at 07:11:00PM +0800, Daniel J Blueman wrote:
> On present kernels, HPET fallback occurs on some 8-16 socket x86
> systems due to the TSC adjust architectural MSR not being respected.
>
> This was fixed upstream in commit 455f9075f14484f358b3c1d6845b4a438de198a7.
>
> Please backport this fix to -stable for 6.9, 6.8, 6.6, 6.1, 5.15,
> 5.10, 5.4 and 4.19 branches to allow correct TSC operation on existing
> distros using these kernels. The patch cleanly applies to all of these
> latest -stable branches.
Now queued up, thanks.
greg k-h
^ permalink raw reply [flat|nested] 2+ messages in thread
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