linux-kernel - Re: [PATCH] x86: Let AS_WRUSS depend on X86

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Message-ID: <20231031133447.GBZUECd12o2sw7E4Re@fat_crate.local>
Date:   Tue, 31 Oct 2023 14:34:47 +0100
From:   Borislav Petkov <bp@...en8.de>
To:     Masahiro Yamada <masahiroy@...nel.org>
Cc:     "Jiri Slaby (SUSE)" <jirislaby@...nel.org>, peterz@...radead.org,
        linux-kernel@...r.kernel.org, Yu-cheng Yu <yu-cheng.yu@...el.com>,
        Rick Edgecombe <rick.p.edgecombe@...el.com>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        Kees Cook <keescook@...omium.org>,
        Mike Rapoport <rppt@...nel.org>,
        Pengfei Xu <pengfei.xu@...el.com>,
        John Allen <john.allen@....com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>,
        "H. Peter Anvin" <hpa@...or.com>, x86@...nel.org,
        linux-kbuild@...r.kernel.org
Subject: Re: [PATCH] x86: Let AS_WRUSS depend on X86_64

On Tue, Oct 31, 2023 at 09:20:33PM +0900, Masahiro Yamada wrote:
> Please note "depends on X86_64" cannot prevent gcc
> from running here.
> 
> $(as-instr,wrussq %rax$(comma)(%rbx)) is replaced with 'y'
> while parsing the Kconfig files.
>
Then what is this fixing?

Jiri, what openSUSE kernel build issues were you referring to on IRC?

-- 
Regards/Gruss,
    Boris.

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