[PATCH v3 1/5] build: clarify configuration without IOVA field in mbuf

[fengchengwen]

Acked-by: Chengwen Feng <fengchengwen at huawei.com>

On 2023/3/14 22:29, Thomas Monjalon wrote:
> The impact of the option "enable_iova_as_pa" is explained for users.
> 
> Also the code flag "RTE_IOVA_AS_PA" is renamed as "RTE_IOVA_IN_MBUF"
> in order to be more accurate (IOVA mode is decided at runtime),
> and more readable in the code.
> 
> Similarly the drivers are using the variable "require_iova_in_mbuf"
> instead of "pmd_supports_disable_iova_as_pa" with an opposite meaning.
> By default, it is assumed that drivers require the IOVA field in mbuf.
> The drivers which support removing this field have to declare themselves.
> Some bus drivers are declared compatible.
> 
> If the option "enable_iova_as_pa" is disabled, the unsupported drivers
> will be listed with the new reason text "requires IOVA in mbuf".
> 
> Suggested-by: Bruce Richardson <bruce.richardson at intel.com>
> Signed-off-by: Thomas Monjalon <thomas at monjalon.net>
> Reviewed-by: Bruce Richardson <bruce.richardson at intel.com>
> Acked-by: Morten Brørup <mb at smartsharesystems.com>
> ---

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