linux-kernel - Re: [PATCH 01/22] x86/paravirt: Fix callee-saved function ELF sizes

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Message-ID: <445aa72f-c5ba-635d-122b-6d082e9c115e@suse.com>
Date:   Mon, 15 Jul 2019 06:58:36 +0200
From:   Juergen Gross <jgross@...e.com>
To:     Josh Poimboeuf <jpoimboe@...hat.com>, x86@...nel.org
Cc:     Arnd Bergmann <arnd@...db.de>, Jann Horn <jannh@...gle.com>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Randy Dunlap <rdunlap@...radead.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        linux-kernel@...r.kernel.org, Alok Kataria <akataria@...are.com>
Subject: Re: [PATCH 01/22] x86/paravirt: Fix callee-saved function ELF sizes

On 15.07.19 02:36, Josh Poimboeuf wrote:
> The __raw_callee_save_*() functions have an ELF symbol size of zero,
> which confuses objtool and other tools.
> 
> Fixes a bunch of warnings like the following:
> 
>    arch/x86/xen/mmu_pv.o: warning: objtool: __raw_callee_save_xen_pte_val() is missing an ELF size annotation
>    arch/x86/xen/mmu_pv.o: warning: objtool: __raw_callee_save_xen_pgd_val() is missing an ELF size annotation
>    arch/x86/xen/mmu_pv.o: warning: objtool: __raw_callee_save_xen_make_pte() is missing an ELF size annotation
>    arch/x86/xen/mmu_pv.o: warning: objtool: __raw_callee_save_xen_make_pgd() is missing an ELF size annotation
> 
> Signed-off-by: Josh Poimboeuf <jpoimboe@...hat.com>

Reviewed-by: Juergen Gross <jgross@...e.com>


Juergen