Re: [PATCH 0/2] x86/fred: enable FRED by default

[Peter Zijlstra]

On Mon, Mar 23, 2026 at 01:15:03PM -0700, H. Peter Anvin wrote:
> From: H. Peter Anvin (Intel) <hpa@xxxxxxxxx>
> 
> When FRED was added to the mainline kernel, it was set up as an
> explicit opt-in due to the risk of regressions before hardware was
> available publicly.
> 
> Now, Panther Lake (Core Ultra 300 series) has been released, and
> benchmarking by Phoronix has shown that it provides a significant
> performance benefit on most workloads:
> 
>     https://www.phoronix.com/review/intel-fred-panther-lake
> 
> Accordingly, enable FRED by default if the CPU supports it. FRED can
> of course still be disabled via the fred=off command line option.

Acked-by: Peter Zijlstra (Intel) <peterz@xxxxxxxxxxxxx>