linux-kernel - Re: [PATCH V2 1/4] riscv: Separate patch for cflags and aflags

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Date:   Thu, 23 Jan 2020 11:14:20 +0530
From:   Anup Patel <anup@...infault.org>
To:     Guo Ren <guoren@...nel.org>
Cc:     Paul Walmsley <paul.walmsley@...ive.com>,
        Palmer Dabbelt <palmer@...belt.com>,
        Albert Ou <aou@...s.berkeley.edu>,
        Anup Patel <Anup.Patel@....com>,
        Vincent Chen <vincent.chen@...ive.com>,
        Zong Li <zong.li@...ive.com>,
        Greentime Hu <greentime.hu@...ive.com>,
        Bin Meng <bmeng.cn@...il.com>,
        Atish Patra <atish.patra@....com>,
        Andreas Schwab <schwab@...ux-m68k.org>,
        "linux-kernel@...r.kernel.org List" <linux-kernel@...r.kernel.org>,
        linux-arch@...r.kernel.org, Arnd Bergmann <arnd@...db.de>,
        linux-csky@...r.kernel.org,
        linux-riscv <linux-riscv@...ts.infradead.org>,
        Guo Ren <ren_guo@...ky.com>
Subject: Re: [PATCH V2 1/4] riscv: Separate patch for cflags and aflags

On Thu, Jan 16, 2020 at 8:01 PM <guoren@...nel.org> wrote:
>
> From: Guo Ren <ren_guo@...ky.com>
>
> Use "subst fd" in Makefile is a hack way and it's not convenient
> to add new ISA feature. Just separate them into riscv-march-cflags
> and riscv-march-aflags.
>
> Signed-off-by: Guo Ren <ren_guo@...ky.com>
> Cc: Anup Patel <Anup.Patel@....com>
> ---
>  arch/riscv/Makefile | 18 ++++++++++++------
>  1 file changed, 12 insertions(+), 6 deletions(-)
>
> diff --git a/arch/riscv/Makefile b/arch/riscv/Makefile
> index b9009a2fbaf5..6d09b53cf106 100644
> --- a/arch/riscv/Makefile
> +++ b/arch/riscv/Makefile
> @@ -35,12 +35,18 @@ else
>  endif
>
>  # ISA string setting
> -riscv-march-$(CONFIG_ARCH_RV32I)       := rv32ima
> -riscv-march-$(CONFIG_ARCH_RV64I)       := rv64ima
> -riscv-march-$(CONFIG_FPU)              := $(riscv-march-y)fd
> -riscv-march-$(CONFIG_RISCV_ISA_C)      := $(riscv-march-y)c
> -KBUILD_CFLAGS += -march=$(subst fd,,$(riscv-march-y))
> -KBUILD_AFLAGS += -march=$(riscv-march-y)
> +riscv-march-cflags-$(CONFIG_ARCH_RV32I)                := rv32ima
> +riscv-march-cflags-$(CONFIG_ARCH_RV64I)                := rv64ima
> +riscv-march-$(CONFIG_FPU)                      := $(riscv-march-y)fd
> +riscv-march-cflags-$(CONFIG_RISCV_ISA_C)       := $(riscv-march-cflags-y)c
> +
> +riscv-march-aflags-$(CONFIG_ARCH_RV32I)                := rv32ima
> +riscv-march-aflags-$(CONFIG_ARCH_RV64I)                := rv64ima
> +riscv-march-aflags-$(CONFIG_FPU)               := $(riscv-march-aflags-y)fd
> +riscv-march-aflags-$(CONFIG_RISCV_ISA_C)       := $(riscv-march-aflags-y)c
> +
> +KBUILD_CFLAGS += -march=$(riscv-march-cflags-y)
> +KBUILD_AFLAGS += -march=$(riscv-march-aflags-y)
>
>  KBUILD_CFLAGS += -mno-save-restore
>  KBUILD_CFLAGS += -DCONFIG_PAGE_OFFSET=$(CONFIG_PAGE_OFFSET)
> --
> 2.17.0
>

LGTM.

Reviewed-by: Anup Patel <anup@...infault.org>

Regards,
Anup