linux-kernel - Re: [PATCH] riscv: enable BUILDTIME_TABLE

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Date:   Tue, 11 Apr 2023 10:37:36 +0100
From:   Conor Dooley <conor.dooley@...rochip.com>
To:     Jisheng Zhang <jszhang@...nel.org>
CC:     Paul Walmsley <paul.walmsley@...ive.com>,
        Palmer Dabbelt <palmer@...belt.com>,
        Albert Ou <aou@...s.berkeley.edu>,
        <linux-riscv@...ts.infradead.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] riscv: enable BUILDTIME_TABLE_SORT for !MMU

Hey Jisheng,

On Mon, Apr 10, 2023 at 12:43:06AM +0800, Jisheng Zhang wrote:
> BUILDTIME_TABLE_SORT works for !MMU as well, so enable it.
> 
> Tested on QEMU and FPGA.
> 
> Signed-off-by: Jisheng Zhang <jszhang@...nel.org>

Fails to build for nommu_k210_defconfig:

make ARCH=riscv CROSS_COMPILE=riscv64-unknown-linux-gnu- O=build -sk -j30
no __ex_table in file: vmlinux
Failed to sort kernel tables
make[2]: *** [../scripts/Makefile.vmlinux:35: vmlinux] Error 1
make[2]: *** Deleting file 'vmlinux'
make[2]: Target '__default' not remade because of errors.
make[1]: *** [/home/conor/stuff/linux/Makefile:1250: vmlinux] Error 2
make[1]: Target '__all' not remade because of errors.
make: *** [Makefile:226: __sub-make] Error 2
make: Target '__all' not remade because of errors.

:(

> ---
>  arch/riscv/Kconfig | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
> index c5e42cc37604..212ea28e346b 100644
> --- a/arch/riscv/Kconfig
> +++ b/arch/riscv/Kconfig
> @@ -50,7 +50,7 @@ config RISCV
>  	select ARCH_WANT_LD_ORPHAN_WARN if !XIP_KERNEL
>  	select ARCH_WANTS_THP_SWAP if HAVE_ARCH_TRANSPARENT_HUGEPAGE
>  	select BINFMT_FLAT_NO_DATA_START_OFFSET if !MMU
> -	select BUILDTIME_TABLE_SORT if MMU
> +	select BUILDTIME_TABLE_SORT
>  	select CLINT_TIMER if !MMU
>  	select CLONE_BACKWARDS
>  	select COMMON_CLK
> -- 
> 2.40.0
> 

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