On Wed, Sep 06, 2023 at 03:36:40PM -0300, Antonio Terceiro wrote: > On Wed, Sep 06, 2023 at 01:49:16PM +0100, Robin Murphy wrote: > > It's blowing up trying to access PCI I/O space, which has apparently ended > > up in the indirect access mechanism without that being configured correctly. > > That is definitely an issue down somewhere between the PCI layer and the > > system firmware. Does the system even have an I/O space window? Some arm64 > > machines don't. I guess we might not have got as far as probing a driver if > > the I/O BAR couldn't be assigned at all, but either way something's not gone > > right. > > I'm pretty sure I saw reports of people using PCI GPUs on this machine, > but I would need to confirm. > > What info would I need to gather from the machine in order to figure > this out? Antonio, please see: https://community.amperecomputing.com/t/amd-gpus-on-the-altra-devkit-and-other-altras-patches-available-now/336/11 You have a quirky PCIe controller it seems. You'll have to go through the errata and then some. Good Luck, Geraldo Nascimento
