Re: [PATCH v2 06/17] riscv: Extend cpufeature.c to detect vendor extensions

[Conor Dooley]

On Mon, Apr 15, 2024 at 09:12:03PM -0700, Charlie Jenkins wrote:

> @@ -351,6 +343,14 @@ static void __init riscv_parse_isa_string(unsigned long 
> *this_hwcap, struct risc
>               bool ext_long = false, ext_err = false;
>  
>               switch (*ext) {
> +             case 'x':
> +             case 'X':
> +                     pr_warn("Vendor extensions are ignored in riscv,isa. 
> Use riscv,isa-extensions instead.");

Was looking for something and noticed this - pr_warn_once() I think.

> +                     /*
> +                      * In canonical order, the remaining extensions in the
> +                      * isa string will be vendor extensions so exit.
> +                      */
> +                     break;
>               case 's':
>                       /*
>                        * Workaround for invalid single-letter 's' & 'u' 
> (QEMU).

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