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Cc:     Yu-cheng Yu <yu-cheng.yu@intel.com>
References: <20220130211838.8382-1-rick.p.edgecombe@intel.com>
 <20220130211838.8382-5-rick.p.edgecombe@intel.com>
From:   Dave Hansen <dave.hansen@intel.com>
Subject: Re: [PATCH 04/35] x86/cpufeatures: Introduce CPU setup and option
 parsing for CET
In-Reply-To: <20220130211838.8382-5-rick.p.edgecombe@intel.com>
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>   * Some CPU features depend on higher CPUID levels, which may not always
>   * be available due to CPUID level capping or broken virtualization
> @@ -1261,6 +1269,9 @@ static void __init cpu_parse_early_param(void)
>  	if (cmdline_find_option_bool(boot_command_line, "noxsaves"))
>  		setup_clear_cpu_cap(X86_FEATURE_XSAVES);
>  
> +	if (cmdline_find_option_bool(boot_command_line, "no_user_shstk"))
> +		setup_clear_cpu_cap(X86_FEATURE_SHSTK);

Given this:

	https://lore.kernel.org/all/20220127115626.14179-2-bp@alien8.de/

I'd probably yank the command-line option out of this series, or stick
it in a separate patch that you tack on to the end.