# Re: \[PATCH v19 04/25\] x86/cpufeatures: Introduce X86\_FEATURE\_CET and setup functions

- From: Borislav Petkov \<bp@alien8.de\>
- Date: 2021-02-05 13:47:47 
- List: linux-doc
- Page: https://ratatoskr.run/linux-doc/2021/02/6259995
- Thread: https://ratatoskr.run/linux-doc/2021/02/6257763/t.md

```text
On Wed, Feb 03, 2021 at 02:55:26PM -0800, Yu-cheng Yu wrote:
> @@ -1252,6 +1260,13 @@ static void __init cpu_parse_early_param(void)
>  	if (cmdline_find_option_bool(boot_command_line, "noxsaves"))
>  		setup_clear_cpu_cap(X86_FEATURE_XSAVES);
>  
> +#ifdef CONFIG_X86_CET
> +	if (cmdline_find_option_bool(boot_command_line, "no_user_shstk"))
> +		setup_clear_cpu_cap(X86_FEATURE_SHSTK);
> +	if (cmdline_find_option_bool(boot_command_line, "no_user_ibt"))
> +		setup_clear_cpu_cap(X86_FEATURE_IBT);
> +#endif

Any particular need for the ifdeffery?

-- 
Regards/Gruss,
    Boris.

https://people.kernel.org/tglx/notes-about-netiquette
```