RE: [PATCH v2] config/x86: config support for AMD EPYC processors

[Konstantin Ananyev <konstantin.ananyev@huawei.com>]

> On x86 platforms, max lcores are limited to 128 by default.
> 
> On AMD EPYC processors, this limit was adjusted for native
> builds in the previous patch.
> https://patches.dpdk.org/project/dpdk/patch/
> 20230925151027.558546-1-sivaprasad.tummala@amd.com/
> 
> As agreed earlier in mailing list, this patch adjusts the limit
> for specific AMD EPYC target/cross builds.
> 
> Signed-off-by: Sivaprasad Tummala <sivaprasad.tummala@amd.com>
> Acked-by: Morten Brørup <mb@smartsharesystems.com>
> ---
>  config/x86/meson.build | 10 +++++++++-
>  1 file changed, 9 insertions(+), 1 deletion(-)
> 
> diff --git a/config/x86/meson.build b/config/x86/meson.build
> index 5355731cef..8087b9ae91 100644
> --- a/config/x86/meson.build
> +++ b/config/x86/meson.build
> @@ -91,13 +91,21 @@ epyc_zen_cores = {
>      '__znver1__':128
>      }
> 
> -if get_option('platform') == 'native'
> +cpu_instruction_set = get_option('cpu_instruction_set')
> +if cpu_instruction_set == 'native'
>      foreach m:epyc_zen_cores.keys()
>          if cc.get_define(m, args: machine_args) != ''
>              dpdk_conf.set('RTE_MAX_LCORE', epyc_zen_cores[m])
>              break
>          endif
>      endforeach
> +else
> +    foreach m:epyc_zen_cores.keys()
> +        if m.contains(cpu_instruction_set)
> +            dpdk_conf.set('RTE_MAX_LCORE', epyc_zen_cores[m])
> +            break
> +        endif
> +    endforeach
>  endif
> 
>  dpdk_conf.set('RTE_MAX_NUMA_NODES', 32)
> --

Acked-by: Konstantin Ananyev <konstantin.ananyev@huawei.com>
 

> 2.25.1