Re: [PATCH v2] x86,sched: Update the Intel SNC CPU list that allows shared LLCs

[Dave Hansen]

On 2/16/21 11:58 AM, Alison Schofield wrote:
>  arch/x86/kernel/smpboot.c | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c
> index 02813a7f3a7c..de8c598dc3b9 100644
> --- a/arch/x86/kernel/smpboot.c
> +++ b/arch/x86/kernel/smpboot.c
> @@ -475,6 +475,8 @@ static bool match_smt(struct cpuinfo_x86 *c, struct cpuinfo_x86 *o)
>  
>  static const struct x86_cpu_id snc_cpu[] = {
>  	X86_MATCH_INTEL_FAM6_MODEL(SKYLAKE_X, NULL),
> +	X86_MATCH_INTEL_FAM6_MODEL(ICELAKE_X, NULL),
> +	X86_MATCH_INTEL_FAM6_MODEL(SAPPHIRERAPIDS_X, NULL),
>  	{}
>  };

Oh, and if this version gets picked up (or we go to a v3), it probably
also needs a:

Cc: stable@xxxxxxxxxxxxxxx

This does cause scary warnings, and it would be nice to suppress those
on stable kernels too.