linux-kernel - Re: [PATCH v2] sparc: allow sparc32 alias for archhelp

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Date:   Mon, 10 Apr 2023 17:13:41 -0700
From:   Randy Dunlap <rdunlap@...radead.org>
To:     Masahiro Yamada <masahiroy@...nel.org>
Cc:     linux-kernel@...r.kernel.org, Sam Ravnborg <sam@...nborg.org>,
        "David S. Miller" <davem@...emloft.net>,
        sparclinux@...r.kernel.org,
        Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCH v2] sparc: allow sparc32 alias for archhelp



On 4/10/23 16:45, Masahiro Yamada wrote:
> On Mon, Apr 10, 2023 at 10:13 AM Randy Dunlap <rdunlap@...radead.org> wrote:
>>
>> Currently, entering
>> $ make ARCH=sparc32 help
>> prints the archhelp text for sparc64.
>>
>> Since "sparc32" is documented (Documentation/kbuild/kbuild.rst)
>> to be a recognized alias for 32-bit sparc, also support that
>> string in sparc's archhelp by allowing either ARCH=sparc or
>> ARCH=sparc32 for sparc32 archhelp.
>>
>> Fixes: 5e53879008b9 ("sparc,sparc64: unify Makefile")
>> Signed-off-by: Randy Dunlap <rdunlap@...radead.org>
>> Cc: Sam Ravnborg <sam@...nborg.org>
>> Cc: "David S. Miller" <davem@...emloft.net>
>> Cc: sparclinux@...r.kernel.org
>> Cc: Andrew Morton <akpm@...ux-foundation.org>
>> Acked-by: Sam Ravnborg <sam@...nborg.org>
>> Cc: Masahiro Yamada <masahiroy@...nel.org>
>> ---
>> v2: rebase/resend; add Masahiro to Cc: list
>>
>>  arch/sparc/Makefile |    2 +-
>>  1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff -- a/arch/sparc/Makefile b/arch/sparc/Makefile
>> --- a/arch/sparc/Makefile
>> +++ b/arch/sparc/Makefile
>> @@ -83,7 +83,7 @@ vdso_install:
>>  KBUILD_IMAGE := $(boot)/zImage
>>
>>  # Don't use tabs in echo arguments.
>> -ifeq ($(ARCH),sparc)
>> +ifeq ($(ARCH),$(filter $(ARCH),sparc sparc32))
>>  define archhelp
>>    echo  '* image        - kernel image ($(boot)/image)'
> 
> 
> BTW, this is strange.
> 
> 
> The asterisk means it is built by 'all'.
> 
> 
> But, I only see the following in this Makefile.
> 
> 
> # Default target
> all: zImage
> 
> 
> 
> 
> 
> Seeing arch/sparc/boot/Makefile,
> it is true $(boot)/image is generated
> as a side-effect of zImage, but it it true for
> both 32-bit and 64-bit.
> 
> I think it is even better to rewrite archhelp
> to unify the 32/64 bits.
> 

Yeah, I had thought of that also. I'll do that and resend it.

Thanks.

> 
> 
> 
> 
>>    echo  '* zImage       - stripped kernel image ($(boot)/zImage)'
> 
> 
> 

-- 
~Randy