[PATCH v3] common/cnxk: allow enabling IOVA field in mbuf

[Bruce Richardson]

On Fri, Oct 25, 2024 at 05:21:22PM +0530, Shijith Thotton wrote:
> The value of RTE_IOVA_IN_MBUF has always been disabled on CNXK
> platforms, as IOVA in the mbuf is unnecessary. This update changes that
> behavior to respect the value set by the user. A warning message will be
> printed if the build is configured to enable IOVA on the CNXK platform.
> 
> Signed-off-by: Shijith Thotton <sthotton at marvell.com>
> ---
> v3:
> - Updated documentation.
> 
> v2:
> - Don't override the default value of RTE_IOVA_IN_MBUF in CNXK platform.
> - Print a warning message if IOVA in mbuf is enabled on CNXK platform.
> 
>  config/arm/meson.build          |  8 ++------
>  doc/guides/platform/cnxk.rst    | 13 +++++++------
>  drivers/common/cnxk/meson.build |  7 +++++++
>  3 files changed, 16 insertions(+), 12 deletions(-)
> 
> diff --git a/config/arm/meson.build b/config/arm/meson.build
> index 55be7c8711..20f7f6508c 100644
> --- a/config/arm/meson.build
> +++ b/config/arm/meson.build
> @@ -459,10 +459,7 @@ soc_cn9k = {
>      'description': 'Marvell OCTEON 9',
>      'implementer': '0x43',
>      'part_number': '0xb2',
> -    'numa': false,
> -    'flags': [
> -        ['RTE_IOVA_IN_MBUF', 0]
> -    ]
> +    'numa': false
>  }
>  
>  soc_cn10k = {
> @@ -471,8 +468,7 @@ soc_cn10k = {
>      'flags': [
>          ['RTE_MAX_LCORE', 24],
>          ['RTE_MAX_NUMA_NODES', 1],
> -        ['RTE_MEMPOOL_ALIGN', 128],
> -        ['RTE_IOVA_IN_MBUF', 0]
> +        ['RTE_MEMPOOL_ALIGN', 128]

FYI, meson is ok with trailing commas [1], so you don't need to modify this
line at all, just leave the comma at the end.

/Bruce

[1] https://mesonbuild.com/Style-guide.html#trailing-commas