Re: [dpdk-dev] [PATCH 2/2] mk: disable armv8 crypto extension for Mellanox BlueField

[Honnappa Nagarahalli <Honnappa.Nagarahalli@arm.com>]

> 
> Mellanox BlueField has a variant which doesn't have armv8 crypto extension.
> If crypto enabled binary runs on such a pltform, rte_eal_init() fails. To have
> binary compatibility across multiple variants, it is disabled by default and can
> be enabled for crypto enabled parts.
> 
> Signed-off-by: Yongseok Koh <yskoh@mellanox.com>
> ---
>  config/defconfig_arm64-bluefield-linuxapp-gcc | 6 ++++++
>  1 file changed, 6 insertions(+)
> 
> diff --git a/config/defconfig_arm64-bluefield-linuxapp-gcc
> b/config/defconfig_arm64-bluefield-linuxapp-gcc
> index b496538819..6da9c2026d 100644
> --- a/config/defconfig_arm64-bluefield-linuxapp-gcc
> +++ b/config/defconfig_arm64-bluefield-linuxapp-gcc
> @@ -10,6 +10,12 @@ CONFIG_RTE_ARCH_ARM_TUNE="cortex-a72"
>  CONFIG_RTE_MAX_NUMA_NODES=1
>  CONFIG_RTE_CACHE_LINE_SIZE=64
> 
> +# Crypto extension of armv8
> +#
> +# Disabled by default for binary compatibility.
> +# Can be enabled for crypto-enabled parts.
> +CONFIG_RTE_ENABLE_ARMV8_CRYPTO=n
How do you plan to support the Bluefield devices with crypto enabled? Do you plan to add another config?

> +
>  # UMA architecture
>  CONFIG_RTE_EAL_NUMA_AWARE_HUGEPAGES=n
>  CONFIG_RTE_LIBRTE_VHOST_NUMA=n
> --
> 2.11.0