Hello, resurrecting an old thread.. I incurred in the same issue being discussed before, where QEMU silently ignores PCI BAR address programming attempts where the I/O space offset is 0 (zero).
I think that from a QEMU "user" standpoint, beside this particular issue, which can be easily worked around just using a minimum offset, it would be good if QEMU would be a bit verbose in producing a warning about this. I think that at least it would be worth a message if DEBUG_PCI is set. This silent discarding of BAR programming attempts has been painful while doing early enablement even for other cases (like the requirement to set I/O space bit before hand etc), which are legitimate, but are still worthy of a diagnostic I think, at the very least if doing pci enablement (which to me translates in having DEBUG_PCI set). What do you guys think, would a patch be welcome trying to address that? Would you make the diagnostic dependent on DEBUG_PCI? Thanks, Claudio
