Re: [PATCH v2 07/12] parisc/percpu: Work around the lack of __SIZEOF_INT128__

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On Fri, Jun 02, 2023 at 04:39:12PM +0200, Peter Zijlstra wrote:
> On Thu, Jun 01, 2023 at 09:29:18AM -0400, Linus Torvalds wrote:
> 
> > Right now we have that "minimum gcc version" in a somewhat annoying
> > place: it's in the ./scripts/min-tool-version.sh file as a shell
> > script.
> 
> Something like so then?
> 
> ---
> Subject: parisc: Raise minimal GCC version
> From: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
> Date: Fri Jun  2 16:33:54 CEST 2023
> 
> With 64bit builds depending on __SIZEOF_INT128__ raise the parisc
> minimum compiler version to gcc-11.0.0.
> 
> All other 64bit architectures provide this from GCC-5.1.0 (and
> probably before), except hppa64 which only started advertising this
> with GCC-11.
> 
> Signed-off-by: Peter Zijlstra (Intel) <peterz@xxxxxxxxxxxxx>
> ---
>  scripts/min-tool-version.sh |    6 +++++-
>  1 file changed, 5 insertions(+), 1 deletion(-)
> 
> --- a/scripts/min-tool-version.sh
> +++ b/scripts/min-tool-version.sh
> @@ -17,7 +17,11 @@ binutils)
>  	echo 2.25.0
>  	;;
>  gcc)
> -	echo 5.1.0
> +	if [ "$SRCARCH" = parisc ]; then
> +		echo 11.0.0
> +	else
> +		echo 5.1.0
> +	fi
>  	;;
>  llvm)
>  	if [ "$SRCARCH" = s390 ]; then

I gave this a spin and it looks good to me:

[mark@lakrids:~/src/linux]% usekorg 10.3.0 make ARCH=arm64 CROSS_COMPILE=aarch64-linux- defconfig
  HOSTCC  scripts/basic/fixdep
  HOSTCC  scripts/kconfig/conf.o
  HOSTCC  scripts/kconfig/confdata.o
  HOSTCC  scripts/kconfig/expr.o
  LEX     scripts/kconfig/lexer.lex.c
  YACC    scripts/kconfig/parser.tab.[ch]
  HOSTCC  scripts/kconfig/lexer.lex.o
  HOSTCC  scripts/kconfig/menu.o
  HOSTCC  scripts/kconfig/parser.tab.o
  HOSTCC  scripts/kconfig/preprocess.o
  HOSTCC  scripts/kconfig/symbol.o
  HOSTCC  scripts/kconfig/util.o
  HOSTLD  scripts/kconfig/conf
*** Default configuration is based on 'defconfig'
#
# configuration written to .config
#
[mark@lakrids:~/src/linux]% usekorg 10.3.0 make ARCH=parisc CROSS_COMPILE=hppa64-linux- generic-64bit_defconfig
***
*** C compiler is too old.
***   Your GCC version:    10.3.0
***   Minimum GCC version: 11.0.0
***
scripts/Kconfig.include:44: Sorry, this C compiler is not supported.
make[1]: *** [scripts/kconfig/Makefile:94: generic-64bit_defconfig] Error 1
make: *** [Makefile:692: generic-64bit_defconfig] Error 2
[mark@lakrids:~/src/linux]% usekorg 11.3.0 make ARCH=parisc CROSS_COMPILE=hppa64-linux- generic-64bit_defconfig
#
# configuration written to .config
#

FWIW:

Tested-by: Mark Rutland <mark.rutland@xxxxxxx>

Mark.




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