On Wed, Mar 13, 2019 at 02:16:47PM +0100, Timur Kristóf wrote: > Hi, > > PCI-E atomics don't work for me with a Thunderbolt 3 bridge. > I see the following message from my Thunderbolt 3 eGPU in dmesg: > > kfd: skipped device 1002:67df, PCI rejects atomics > > Hardware is a Dell XPS 13 9370 (with i7-8550U CPU) connected to a Zotac > AMP mini, with an AMD RX 570 graphics card. Due to this, I cannot use > the GPU for OpenCL, because the compute stack requires PCI-E atomics > support [1]. > > What could be the problem? Is this a hardware limitation or a missing > feature in the Linux TB driver? I would suggest asking the Linux thunderbolt driver authors and the graphics developers. Us USB developers have nothing to do with that :) good luck! greg k-h
