RE: [PATCH] config/arm: support crypto in cortex-a78ae mcpu

[Wathsala Vithanage <wathsala.vithanage@arm.com>]

Reviewed-by: Wathsala Vithanage <wathsala.vithanage@arm.com>

> -----Original Message-----
> From: Shani Peretz <shperetz@nvidia.com>
> Sent: Tuesday, August 5, 2025 1:23 AM
> To: dev@dpdk.org
> Cc: getelson@nvidia.com; bingz@nvidia.com; Shani Peretz
> <shperetz@nvidia.com>; Wathsala Vithanage <wathsala.vithanage@arm.com>;
> stable@dpdk.org; Bruce Richardson <bruce.richardson@intel.com>; Dhruv
> Tripathi <Dhruv.Tripathi@arm.com>
> Subject: [PATCH] config/arm: support crypto in cortex-a78ae mcpu
> 
> ARM cortex-a78ae configuration (part number 0xd42) is being built without the
> necessary crypto extensions. This results in infinite loops in the crypto
> performance tests applications because the hardware crypto features are not
> properly enabled.
> This fix enables the crypto extension in the mcpu definition.
> 
> Fixes: c02c01dbf907 ("config/arm: prefer strict use of -mcpu if supported")
> Cc: wathsala.vithanage@arm.com
> Cc: stable@dpdk.org
> 
> Signed-off-by: Shani Peretz <shperetz@nvidia.com>
> ---
>  config/arm/meson.build | 7 +++++--
>  1 file changed, 5 insertions(+), 2 deletions(-)
> 
> diff --git a/config/arm/meson.build b/config/arm/meson.build index
> 35b7553e74..82661b7cfe 100644
> --- a/config/arm/meson.build
> +++ b/config/arm/meson.build
> @@ -84,8 +84,7 @@ part_number_config_arm = {
>          ]
>      },
>      '0xd42': {
> -        'march': 'armv8.4-a',
> -        'mcpu' : 'cortex-a78ae',
> +        'mcpu' : 'mcpu_cortex-a78ae',
>          'flags': [
>              ['RTE_MAX_LCORE', 16],
>              ['RTE_MAX_NUMA_NODES', 1]
> @@ -689,6 +688,10 @@ mcpu_defs = {
>          'march': 'armv8-a',
>          'march_extensions': ['simd'],
>      },
> +    'mcpu_cortex-a78ae': {
> +        'march': 'armv8.4-a',
> +        'march_extensions': ['crypto']
> +    }
>  }
> 
>  '''
> --
> 2.34.1