On 07/03/2025 23:07, Gregory Price wrote: > So this is just some semantic confusion - and the reality is the driver > simply refers to the first device in the fabric as "The Root", and every > device has "A Port", and so the "Root Port" just means it's the Root's > "Port" not a "CXL Specification Root Port". > > Whatever the case, from the snippets above, you can see the CFMWS adds 1 > "root decoder" per CFMWS - which makes sense, as a CFMWS can describe > multi-host-bridge interleave - i.e. whatever the actual root device is > must be upstream of the host bridges themselves. Gregory, Many thanks for your detailed explanation. This aligns with what I understood before. Thanks Zhijian