linux-kernel - Re: [PATCH] RISC-V: kexec: Fix build error without CONFIG

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Message-ID: <CAK7LNASHC2nrszDgHzYE6WSAh0OD2f-6GpXTdMmc959vShF+JQ@mail.gmail.com>
Date:   Thu, 16 Jun 2022 11:21:10 +0900
From:   Masahiro Yamada <masahiroy@...nel.org>
To:     Randy Dunlap <rdunlap@...radead.org>
Cc:     Li Zhengyu <lizhengyu3@...wei.com>, palmer@...osinc.com,
        mick@....forth.gr, Paul Walmsley <paul.walmsley@...ive.com>,
        Albert Ou <aou@...s.berkeley.edu>, liaochang1@...wei.com,
        "open list:SIFIVE DRIVERS" <linux-riscv@...ts.infradead.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        "Eric W. Biederman" <ebiederm@...ssion.com>,
        kexec@...ts.infradead.org,
        Linux-Next Mailing List <linux-next@...r.kernel.org>
Subject: Re: [PATCH] RISC-V: kexec: Fix build error without CONFIG_KEXEC

On Thu, Jun 2, 2022 at 1:00 AM Randy Dunlap <rdunlap@...radead.org> wrote:
>
>
>
> On 6/1/22 00:02, Li Zhengyu wrote:
> > When CONFIG_KEXEC_FILE=y but CONFIG_KEXEC is not set:
> >
> > kernel/kexec_core.o: In function `kimage_free':
> > kexec_core.c:(.text+0xa0c): undefined reference to `machine_kexec_cleanup'
> > kernel/kexec_core.o: In function `.L0 ':
> > kexec_core.c:(.text+0xde8): undefined reference to `machine_crash_shutdown'
> > kexec_core.c:(.text+0xdf4): undefined reference to `machine_kexec'
> > kernel/kexec_core.o: In function `.L231':
> > kexec_core.c:(.text+0xe1c): undefined reference to `riscv_crash_save_regs'
> > kernel/kexec_core.o: In function `.L0 ':
> > kexec_core.c:(.text+0x119e): undefined reference to `machine_shutdown'
> > kernel/kexec_core.o: In function `.L312':
> > kexec_core.c:(.text+0x11b2): undefined reference to `machine_kexec'
> > kernel/kexec_file.o: In function `.L0 ':
> > kexec_file.c:(.text+0xb84): undefined reference to `machine_kexec_prepare'
> > kernel/kexec_file.o: In function `.L177':
> > kexec_file.c:(.text+0xc5a): undefined reference to `machine_kexec_prepare'
> > Makefile:1160: recipe for target 'vmlinux' failed
> > make: *** [vmlinux] Error 1
> >
> > These symbols should depend on CONFIG_KEXEC_CORE rather than CONFIG_KEXEC
> > when kexec_file has been implemented on RISC-V, like the other archs have
> > done.
> >
> > Signed-off-by: Li Zhengyu <lizhengyu3@...wei.com>
>
> Reported-by: Randy Dunlap <rdunlap@...radead.org>
> Tested-by: Randy Dunlap <rdunlap@...radead.org>
> Acked-by: Randy Dunlap <rdunlap@...radead.org>
>
> thanks.
>
> > ---
> >  arch/riscv/kernel/Makefile | 2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> >
> > diff --git a/arch/riscv/kernel/Makefile b/arch/riscv/kernel/Makefile
> > index c71d6591d539..33bb60a354cd 100644
> > --- a/arch/riscv/kernel/Makefile
> > +++ b/arch/riscv/kernel/Makefile
> > @@ -78,7 +78,7 @@ obj-$(CONFIG_SMP) += cpu_ops_sbi.o
> >  endif
> >  obj-$(CONFIG_HOTPLUG_CPU)    += cpu-hotplug.o
> >  obj-$(CONFIG_KGDB)           += kgdb.o
> > -obj-$(CONFIG_KEXEC)          += kexec_relocate.o crash_save_regs.o machine_kexec.o
> > +obj-$(CONFIG_KEXEC_CORE)     += kexec_relocate.o crash_save_regs.o machine_kexec.o
> >  obj-$(CONFIG_KEXEC_FILE)     += elf_kexec.o machine_kexec_file.o
> >  obj-$(CONFIG_CRASH_DUMP)     += crash_dump.o
> >
>
> --
> ~Randy


Perhaps, worth this:

Fixes: 6261586e0c91 ("RISC-V: Add kexec_file support")



Reviewed-by: Masahiro Yamada <masahiroy@...nel.org>


-- 
Best Regards
Masahiro Yamada