[kvm-unit-tests PATCH v3 2/5] configure: arm/arm64: Display the correct default processor

[Alexandru Elisei]

Hi Jean-Philippe,

On Tue, Mar 25, 2025 at 04:00:30PM +0000, Jean-Philippe Brucker wrote:
> From: Alexandru Elisei <alexandru.elisei at arm.com>
> 
> The help text for the --processor option displays the architecture name as
> the default processor type. But the default for arm is cortex-a15, and for
> arm64 is cortex-a57. Teach configure to display the correct default
> processor type for these two architectures.

Looks good to me:

Reviewed-by: Alexandru Elisei <alexandru.elisei at arm.com>

Thanks,
Alex

> 
> Signed-off-by: Alexandru Elisei <alexandru.elisei at arm.com>
> Signed-off-by: Jean-Philippe Brucker <jean-philippe at linaro.org>
> ---
>  configure | 30 ++++++++++++++++++++++--------
>  1 file changed, 22 insertions(+), 8 deletions(-)
> 
> diff --git a/configure b/configure
> index 010c68ff..b4875ef3 100755
> --- a/configure
> +++ b/configure
> @@ -5,6 +5,24 @@ if [ -z "${BASH_VERSINFO[0]}" ] || [ "${BASH_VERSINFO[0]}" -lt 4 ] ; then
>      exit 1
>  fi
>  
> +# Return the default CPU type to compile for
> +function get_default_processor()
> +{
> +    local arch="$1"
> +
> +    case "$arch" in
> +    "arm")
> +        echo "cortex-a15"
> +        ;;
> +    "arm64")
> +        echo "cortex-a57"
> +        ;;
> +    *)
> +        echo "$arch"
> +        ;;
> +    esac
> +}
> +
>  srcdir=$(cd "$(dirname "$0")"; pwd)
>  prefix=/usr/local
>  cc=gcc
> @@ -44,13 +62,14 @@ fi
>  
>  usage() {
>      [ "$arch" = "aarch64" ] && arch="arm64"
> +    [ -z "$processor" ] && processor=$(get_default_processor $arch)
>      cat <<-EOF
>  	Usage: $0 [options]
>  
>  	Options include:
>  	    --arch=ARCH            architecture to compile for ($arch). ARCH can be one of:
>  	                           arm, arm64, i386, ppc64, riscv32, riscv64, s390x, x86_64
> -	    --processor=PROCESSOR  processor to compile for ($arch)
> +	    --processor=PROCESSOR  processor to compile for ($processor)
>  	    --target=TARGET        target platform that the tests will be running on (qemu or
>  	                           kvmtool, default is qemu) (arm/arm64 only)
>  	    --cross-prefix=PREFIX  cross compiler prefix
> @@ -326,13 +345,8 @@ if [ "$earlycon" ]; then
>      fi
>  fi
>  
> -[ -z "$processor" ] && processor="$arch"
> -
> -if [ "$processor" = "arm64" ]; then
> -    processor="cortex-a57"
> -elif [ "$processor" = "arm" ]; then
> -    processor="cortex-a15"
> -fi
> +# $arch will have changed when cross-compiling.
> +[ -z "$processor" ] && processor=$(get_default_processor $arch)
>  
>  if [ "$arch" = "i386" ] || [ "$arch" = "x86_64" ]; then
>      testdir=x86
> -- 
> 2.49.0
>