* Prasad Joshi ([email protected]) wrote: > > From: Chris Wright [[email protected]] > > I would like to know the same thing > > for the PCIe GPU card connected to my machine. If GPU card is also sitting > > behind the bridge then the hardware may be useless for the project. :( > > > The GPU is also in a PCIe port, here: > > > 00:02.0 PCI bridge: ATI Technologies Inc RD890 PCI to PCI bridge (PCI > > express gpp port B) > > Bus: primary=00, secondary=06, subordinate=06, sec-latency=0 > > > 06:00.0 VGA compatible controller: nVidia Corporation G86 [Quadro NVS 290] > > As the secondary and subordinate are 06, it means GPU pass through won't work.
No, it just means there are nor more bridges behind 00:02.0. The GPU is a PCIe device in a PCIe port (which happens to look a lot like a bridge). So, while GPU assignment has some tricky issues, I don't think you'll be stopped by the IOMMU. > >> Please explain how to find out this information. > > > Using lspci -t you can see the topology pretty easily. Otherwise you > > can sift through lspci output to find the topology. > > Thanks a lot Chris for explaining everything. You're welcome. Good luck with your project. thanks, -chris -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
