Re: [PATCH v3 0/2] cxl: Region bandwidth calculation for targets with shared upstream link

[Dave Jiang <dave.jiang@intel.com>]

On 6/5/24 11:38 AM, Alison Schofield wrote:
> On Wed, May 29, 2024 at 02:38:56PM -0700, Dave Jiang wrote:
>> This series provides recalculation of the CXL region bandwidth when the targets have
>> shared upstream link by walking the toplogy from bottom up and clamp the bandwdith
>> as the code trasverses up the tree. An example topology:
>>
>>  An example topology from Jonathan:
>>
>>                  CFMWS 0
>>                    |
>>           _________|_________
>>          |                   |
>>    GP0/HB0/ACPI0017-0  GP1/HB1/ACPI0017-1
>>      |          |        |           |
>>     RP0        RP1      RP2         RP3
>>      |          |        |           |
>>    SW 0       SW 1     SW 2        SW 3
>>    |   |      |   |    |   |       |   |
>>   EP0 EP1    EP2 EP3  EP4  EP5    EP6 EP7
> 
> Are the ACPI0017 labels a typo?
> Expected host bridges to be labelled as ACPI0016's.
> 
> That's all, just did a drive-by on the art today.

It would be something like below in this case:
        GP0/ACPI0017-0
        HB0/ACPI0016-0
           |     |
          RP0   RP1

or

        GP0/ACPI0017-0
HB0/ACPI0016-0  HB1/ACPI0016-1
      |               |
     RP0             RP1




> 
> -- Alison