linux-hardening - Re: [PATCH] kbuild: Show Kconfig fragments in "help"

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Date:   Fri, 25 Aug 2023 04:56:54 +0000
From:   Christophe Leroy <christophe.leroy@...roup.eu>
To:     Kees Cook <keescook@...omium.org>,
        Masahiro Yamada <masahiroy@...nel.org>
CC:     "linux-s390@...r.kernel.org" <linux-s390@...r.kernel.org>,
        "linux-kbuild@...r.kernel.org" <linux-kbuild@...r.kernel.org>,
        "x86@...nel.org" <x86@...nel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-hardening@...r.kernel.org" <linux-hardening@...r.kernel.org>,
        "linux-riscv@...ts.infradead.org" <linux-riscv@...ts.infradead.org>,
        "linuxppc-dev@...ts.ozlabs.org" <linuxppc-dev@...ts.ozlabs.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH] kbuild: Show Kconfig fragments in "help"



Le 25/08/2023 à 00:36, Kees Cook a écrit :
> Doing a "make help" would show only hard-coded Kconfig targets and
> depended on the archhelp target to include ".config" targets. There was
> nothing showing global kernel/configs/ targets. Solve this by walking
> the wildcard list and include them in the output, using the first comment
> line as the help text.
> 
> Update all Kconfig fragments to include help text and adjust archhelp
> targets to avoid redundancy.
> 
> Adds the following section to "help" target output:
> 
> Configuration fragment targets (for enabling various Kconfig items):
>    debug.config         - Debugging for CI systems and finding regressions
>    kvm_guest.config     - Bootable as a KVM guest
>    nopm.config          - Disable Power Management
>    rust.config          - Enable Rust
>    tiny-base.config     - Minimal options for tiny systems
>    tiny.config          - Smallest possible kernel image
>    x86_debug.config     - Debugging options for tip tree testing
>    xen.config           - Bootable as a Xen guest
>    tiny.config          - x86-specific options for a small kernel image
>    xen.config           - x86-specific options for a Xen virtualization guest
> 
> Cc: Masahiro Yamada <masahiroy@...nel.org>
> Cc: x86@...nel.org
> Cc: linux-arm-kernel@...ts.infradead.org
> Cc: linuxppc-dev@...ts.ozlabs.org
> Cc: linux-riscv@...ts.infradead.org
> Cc: linux-s390@...r.kernel.org
> Signed-off-by: Kees Cook <keescook@...omium.org>
> ---

> diff --git a/arch/powerpc/configs/85xx-hw.config b/arch/powerpc/configs/85xx-hw.config
> index 524db76f47b7..76b22f8a8172 100644
> --- a/arch/powerpc/configs/85xx-hw.config
> +++ b/arch/powerpc/configs/85xx-hw.config
> @@ -1,3 +1,4 @@
> +# Base hardware support for 86xx

s/86xx/85xx

>   CONFIG_AQUANTIA_PHY=y
>   CONFIG_AT803X_PHY=y
>   CONFIG_ATA=y

> diff --git a/arch/powerpc/configs/book3s_32.config b/arch/powerpc/configs/book3s_32.config
> index 8721eb7b1294..f33483f077db 100644
> --- a/arch/powerpc/configs/book3s_32.config
> +++ b/arch/powerpc/configs/book3s_32.config
> @@ -1,2 +1,3 @@
> +# Base support for Book3s

32 bits Book3s

>   CONFIG_PPC64=n
>   CONFIG_PPC_BOOK3S_32=y

> diff --git a/arch/powerpc/configs/dpaa.config b/arch/powerpc/configs/dpaa.config
> index 4ffacafe4036..65a13ba32813 100644
> --- a/arch/powerpc/configs/dpaa.config
> +++ b/arch/powerpc/configs/dpaa.config
> @@ -1,3 +1,4 @@
> +# Base suppot for DPPA

s/suppot/support/

>   CONFIG_FSL_DPAA=y
>   CONFIG_FSL_PAMU=y
>   CONFIG_FSL_FMAN=y

> diff --git a/arch/powerpc/configs/mpc85xx_base.config b/arch/powerpc/configs/mpc85xx_base.config
> index a1e4d72ed39d..20ecf6575c5c 100644
> --- a/arch/powerpc/configs/mpc85xx_base.config
> +++ b/arch/powerpc/configs/mpc85xx_base.config
> @@ -1,3 +1,4 @@
> +# Base mpc85xxx support

s/mpc85xxx/mpc85xx/

>   CONFIG_MATH_EMULATION=y
>   CONFIG_MPC8536_DS=y
>   CONFIG_MPC85xx_DS=y
> diff --git a/arch/powerpc/configs/mpc86xx_base.config b/arch/powerpc/configs/mpc86xx_base.config
> index 632c014b122d..8239d1e7785d 100644
> --- a/arch/powerpc/configs/mpc86xx_base.config
> +++ b/arch/powerpc/configs/mpc86xx_base.config
> @@ -1,3 +1,4 @@
> +# Base mpc85xxx support

s/mpc85xxx/mpc86xx/

>   CONFIG_PPC_86xx=y
>   CONFIG_GEF_PPC9A=y
>   CONFIG_GEF_SBC310=y