Re: [PATCH v2 1/5] x86: Detection of Knights Landing A/D leak

[Dave Hansen <dave.hansen@xxxxxxxxx>]

On 10/21/21 5:21 AM, Nadav Amit wrote:
> --- a/arch/x86/kernel/cpu/intel.c
> +++ b/arch/x86/kernel/cpu/intel.c
> @@ -296,6 +296,11 @@ static void early_init_intel(struct cpuinfo_x86 *c)
>  		}
>  	}
>  
> +	if (c->x86_model == 87) {
> +		pr_info_once("Enabling PTE leaking workaround\n");
> +		set_cpu_bug(c, X86_BUG_PTE_LEAK);
> +	}

Please take a look at:

	arch/x86/include/asm/intel-family.h

specifically:

#define INTEL_FAM6_XEON_PHI_KNL         0x57 /* Knights Landing */