[PATCH 1/2] config/arm: add SVE control flag

[fengchengwen]

On 2022/5/5 22:27, Rahul Bhansali wrote:
> This add the control flag for SVE to enable or disable
> RTE_HAS_SVE_ACLE macro in the build.
> 
> Signed-off-by: Rahul Bhansali <rbhansali at marvell.com>
> ---
>  config/arm/meson.build | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/config/arm/meson.build b/config/arm/meson.build
> index 8aead74086..dafb342cc6 100644
> --- a/config/arm/meson.build
> +++ b/config/arm/meson.build
> @@ -603,7 +603,8 @@ if (cc.get_define('__ARM_NEON', args: machine_args) != '' or
>      compile_time_cpuflags += ['RTE_CPUFLAG_NEON']
>  endif
>  
> -if cc.get_define('__ARM_FEATURE_SVE', args: machine_args) != ''
> +if (cc.get_define('__ARM_FEATURE_SVE', args: machine_args) != '' and
> +    soc_config.get('sve', true))

The march_features already contain the flag.
If the cpu support 'sve' then it could declare it in march_features, please refer Kunpeng 930:

        '0xd02': {
            'march': 'armv8.2-a',
            'march_features': ['crypto', 'sve'],
            'flags': [
                ['RTE_MACHINE', '"Kunpeng 930"'],
                ['RTE_ARM_FEATURE_ATOMICS', true],
                ['RTE_MAX_LCORE', 1280],
                ['RTE_MAX_NUMA_NODES', 16]
            ]
        }

>      compile_time_cpuflags += ['RTE_CPUFLAG_SVE']
>      if (cc.check_header('arm_sve.h'))
>          dpdk_conf.set('RTE_HAS_SVE_ACLE', 1)
>