linux-kernel - Re: [PATCH v4 08/17] arm64/mm: Remove needless section quotes

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Message-ID: <CAKwvOd=r6bsBfSZxVYrnbm1Utq==ApWBDjx+0Fxsm90Aq3Jghw@mail.gmail.com>
Date:   Mon, 29 Jun 2020 12:53:47 -0700
From:   Nick Desaulniers <ndesaulniers@...gle.com>
To:     Kees Cook <keescook@...omium.org>
Cc:     Will Deacon <will@...nel.org>,
        Catalin Marinas <catalin.marinas@....com>,
        Mark Rutland <mark.rutland@....com>,
        Ard Biesheuvel <ardb@...nel.org>,
        Peter Collingbourne <pcc@...gle.com>,
        James Morse <james.morse@....com>,
        Borislav Petkov <bp@...e.de>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>,
        Russell King <linux@...linux.org.uk>,
        Masahiro Yamada <masahiroy@...nel.org>,
        Arvind Sankar <nivedita@...m.mit.edu>,
        Nathan Chancellor <natechancellor@...il.com>,
        Arnd Bergmann <arnd@...db.de>,
        "maintainer:X86 ARCHITECTURE (32-BIT AND 64-BIT)" <x86@...nel.org>,
        clang-built-linux <clang-built-linux@...glegroups.com>,
        linux-arch <linux-arch@...r.kernel.org>,
        linux-efi <linux-efi@...r.kernel.org>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Joe Perches <joe@...ches.com>
Subject: Re: [PATCH v4 08/17] arm64/mm: Remove needless section quotes

On Sun, Jun 28, 2020 at 11:18 PM Kees Cook <keescook@...omium.org> wrote:
>
> Fix a case of needless quotes in __section(), which Clang doesn't like.
>
> Acked-by: Will Deacon <will@...nel.org>
> Signed-off-by: Kees Cook <keescook@...omium.org>

Yep, I remember bugs from this.  Probably should scan the kernel for
other instances of this.  +Joe for checkpatch.pl validation.
Reviewed-by: Nick Desaulniers <ndesaulniers@...gle.com>

> ---
>  arch/arm64/mm/mmu.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/arch/arm64/mm/mmu.c b/arch/arm64/mm/mmu.c
> index 1df25f26571d..dce024ea6084 100644
> --- a/arch/arm64/mm/mmu.c
> +++ b/arch/arm64/mm/mmu.c
> @@ -42,7 +42,7 @@
>  u64 idmap_t0sz = TCR_T0SZ(VA_BITS);
>  u64 idmap_ptrs_per_pgd = PTRS_PER_PGD;
>
> -u64 __section(".mmuoff.data.write") vabits_actual;
> +u64 __section(.mmuoff.data.write) vabits_actual;
>  EXPORT_SYMBOL(vabits_actual);
>
>  u64 kimage_voffset __ro_after_init;
> --
> 2.25.1
>


-- 
Thanks,
~Nick Desaulniers