linux-kernel - Re: [tip: x86/fred] x86/fred: FRED entry/exit and dispatch code

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Message-ID: <20240126100050.GAZbOC0g3Rlr6otZcT@fat_crate.local>
Date: Fri, 26 Jan 2024 11:00:50 +0100
From: Borislav Petkov <bp@...en8.de>
To: "H. Peter Anvin (Intel)" <hpa@...or.com>
Cc: linux-kernel@...r.kernel.org, linux-tip-commits@...r.kernel.org,
	Thomas Gleixner <tglx@...utronix.de>,
	Megha Dey <megha.dey@...el.com>, Xin Li <xin3.li@...el.com>,
	Shan Kang <shan.kang@...el.com>, x86@...nel.org
Subject: Re: [tip: x86/fred] x86/fred: FRED entry/exit and dispatch code

On Thu, Jan 25, 2024 at 06:21:21PM -0000, tip-bot2 for H. Peter Anvin (Intel) wrote:
> +SYM_CODE_START_NOALIGN(asm_fred_entrypoint_user)
> +	FRED_ENTER
> +	call	fred_entry_from_user
> +	FRED_EXIT
> +	ERETU
> +SYM_CODE_END(asm_fred_entrypoint_user)
> +
> +.fill asm_fred_entrypoint_kernel - ., 1, 0xcc

me compiler no likey:

/tmp/entry_64_fred-de6f10.s:896:7: error: expected assembly-time absolute expression
fill asm_fred_entrypoint_kernel - ., 1, 0xcc
      ^
make[4]: *** [scripts/Makefile.build:361: arch/x86/entry/entry_64_fred.o] Error 1
make[4]: *** Waiting for unfinished jobs....
make[3]: *** [scripts/Makefile.build:481: arch/x86/entry] Error 2
make[3]: *** Waiting for unfinished jobs....

config is x86_64 allmodconfig, compiler is

$ clang --version
Ubuntu clang version 14.0.0-1ubuntu1.1

-- 
Regards/Gruss,
    Boris.

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