linux-kernel - Re: [PATCH -next V8 02/14] riscv: elf

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Date:   Tue, 6 Dec 2022 12:39:07 +0800
From:   Guo Ren <guoren@...nel.org>
To:     Björn Töpel <bjorn@...nel.org>
Cc:     arnd@...db.de, palmer@...osinc.com, tglx@...utronix.de,
        peterz@...radead.org, luto@...nel.org, conor.dooley@...rochip.com,
        heiko@...ech.de, jszhang@...nel.org, lazyparser@...il.com,
        falcon@...ylab.org, chenhuacai@...nel.org, apatel@...tanamicro.com,
        atishp@...shpatra.org, palmer@...belt.com,
        paul.walmsley@...ive.com, mark.rutland@....com,
        zouyipeng@...wei.com, bigeasy@...utronix.de,
        David.Laight@...lab.com, chenzhongjin@...wei.com,
        greentime.hu@...ive.com, andy.chiu@...ive.com,
        linux-arch@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-riscv@...ts.infradead.org,
        Guo Ren <guoren@...ux.alibaba.com>,
        kernel test robot <lkp@...el.com>
Subject: Re: [PATCH -next V8 02/14] riscv: elf_kexec: Fixup compile warning

On Mon, Dec 5, 2022 at 5:13 PM Björn Töpel <bjorn@...nel.org> wrote:
>
> guoren@...nel.org writes:
>
> > From: Guo Ren <guoren@...ux.alibaba.com>
> >
> > If CRYTPO or CRYPTO_SHA256 or KEXE_FILE is not enabled, then:
> >
> > COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1
> > O=build_dir ARCH=riscv SHELL=/bin/bash arch/riscv/
> >
> > ../arch/riscv/kernel/elf_kexec.c: In function 'elf_kexec_load':
> > ../arch/riscv/kernel/elf_kexec.c:185:23: warning: variable
> > 'kernel_start' set but not used [-Wunused-but-set-variable]
> >   185 |         unsigned long kernel_start;
> >       |                       ^~~~~~~~~~~~
> >
> > Fixes: 838b3e28488f ("RISC-V: Load purgatory in kexec_file")
> > Signed-off-by: Guo Ren <guoren@...ux.alibaba.com>
> > Signed-off-by: Guo Ren <guoren@...nel.org>
> > Reviewed-by: Conor Dooley <conor.dooley@...rochip.com>
> > Reported-by: kernel test robot <lkp@...el.com>
> > ---
> >  arch/riscv/kernel/elf_kexec.c | 2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> >
> > diff --git a/arch/riscv/kernel/elf_kexec.c b/arch/riscv/kernel/elf_kexec.c
> > index 0cb94992c15b..4b9264340b78 100644
> > --- a/arch/riscv/kernel/elf_kexec.c
> > +++ b/arch/riscv/kernel/elf_kexec.c
> > @@ -198,7 +198,7 @@ static void *elf_kexec_load(struct kimage *image, char *kernel_buf,
> >       if (ret)
> >               goto out;
> >       kernel_start = image->start;
> > -     pr_notice("The entry point of kernel at 0x%lx\n", image->start);
> > +     pr_notice("The entry point of kernel at 0x%lx\n", kernel_start);
>
> This patch shouldn't be part of the generic entry series. It's just a
> generic fix! Please have this as a separate patch.
Okay

>


-- 
Best Regards
 Guo Ren