My laptop lenovo legion r7000 2020 env (with amd r7 4800h cpu):
$ uname -a
Linux CzgArch 6.3.8-arch1-1 #1 SMP PREEMPT_DYNAMIC Wed, 14 Jun 2023 20:10:31 +0000 x86_64 GNU/Linux
Recently when I searched for NUMA, I found this Q&A, then I get the image by lstopo --of png > server.png: cpu_arch (I don't have enough reputation. So you should open the link to view the image. Sorry. This is my first question.)
Then I viewed the man lstopo and found the 2.0 on the line between package and PCI 01:00:0 is I/O bridge. Does it mean the same as PCI/PCI bridge?
I used the lspci -tvv to view the bridge, but not found related infos:
$ lspci -tvv
-[0000:00]-+-00.0 Advanced Micro Devices, Inc. [AMD] Renoir/Cezanne Root Complex
+-00.2 Advanced Micro Devices, Inc. [AMD] Renoir/Cezanne IOMMU
+-01.0 Advanced Micro Devices, Inc. [AMD] Renoir PCIe Dummy Host Bridge
+-01.1-[01]--+-00.0 NVIDIA Corporation TU117M
| \-00.1 NVIDIA Corporation Device 10fa
...
Here [01]--+-00.0 corresponds to the above image 01:00.0 device.
Q: how to interpret bridge strings like 2.0 in the above image?
