On 6/7/24 7:30 AM, Jonathan Cameron wrote:
>
>>>> + if (is_cxl_root(parent_port)) {
>>>> + ctx->port = parent_port;
>>>> + cxl_coordinates_combine(ctx->coord, ctx->coord,
>>>> + dport->coord);
>>>
>>> I'm a bit lost in all the levels of iteration so may have missed it.
>>>
>>> Do we assume that GP BW (which is the root bridge) is shared across multiple root
>>> ports on that host bridge if they are both part of the interleave set?
>>
>> Do we need to count the number of RPs under a HB and do min(aggregated_RPs_BW, (GP_BW / no of RPs) * affiliated_RPs_in_region)?
>
> I'm not 100% sure I understand the question.
>
> Taking this again and expanding it another level.
>
>
>
> Host CPU
> ______________________________________
> | |
> | |
> | 3 from GP/HMAT | 3 from GP/HMAT
> _____|_____ _______|______
> RP RP RP RP
> 2| |2 2| |2
> __|__ ___|__ __|___ __|____
> |1 |1 1| |1 |1 |1 |1 |1
> EP EP EP EP EP EP EP EP
>
> Then your maths
>
> aggregated RPs BW is 8
> (GP_BW/no of RPS) * affliated RPS in region.
> = (3/2 * 4)
> = 6
While the result is the same, the math would be this below right?
min((3/2 * 2), 4) + min((3/2 * 2), 4)
> Which is correct. So yes, I think that works if we assume everything is balanced.
> I'm fine with that assumption as that should be the common case.
>
>
> Jonathan
>
>
