[RFC 1/2] eal: add pointer compression functions

[Paul Szczepanek]

On 11/10/2023 14:36, Honnappa Nagarahalli wrote:
>> -----Original Message-----
>> From: Thomas Monjalon <thomas at monjalon.net>
>> Sent: Monday, October 9, 2023 10:54 AM
>> To: Paul Szczepanek <Paul.Szczepanek at arm.com>
>> Cc: dev at dpdk.org; Honnappa Nagarahalli <Honnappa.Nagarahalli at arm.com>;
>> Kamalakshitha Aligeri <Kamalakshitha.Aligeri at arm.com>
>> Subject: Re: [RFC 1/2] eal: add pointer compression functions
[...]
>> I see it is providing some per-CPU optimizations, so it is in favor of having it in
>> DPDK.
>> Other than that, it looks very generic, so it is questionable to have in DPDK.
> We had it done for mbuf pointers. But then, we thought it could be generic.
>
> Right now the API results in 32b indices. We could make it generic further by allowing for 16b indices. 8b indices does not make sense.

To add to this, this being generic is I think a good thing.

I think it belongs in DPDK as it will make it easy for other 
architectures to add their versions and maintain the abstraction.