On Mon, Jun 21, 2021 at 06:27:22PM +0800, Dongdong Liu wrote: > PCIe spec 5.0r1.0 section 2.2.6.2 implementation note, In configurations > where a Requester with 10-Bit Tag Requester capability needs to target > multiple Completers, one needs to ensure that the Requester sends 10-Bit > Tag Requests only to Completers that have 10-Bit Tag Completer capability. > So we enable 10-Bit Tag Requester for root port only when the devices > under the root port support 10-Bit Tag Completer. > > Signed-off-by: Dongdong Liu <liudongdong3@xxxxxxxxxx> Looks good, Reviewed-by: Christoph Hellwig <hch@xxxxxx>