On Thu, Jul 15, 2021 at 11:39:54PM +0300, Ruben wrote: > Thanks for the response, here's a link to the entire dmesg log: > https://drive.google.com/file/d/1Uau0cgd2ymYGDXNr1mA9X_UdLoMH_Azn/view > > Some entries that might be of interest: > > [ 0.378712] pci_bus 0000:00: root bus resource [io 0x0000-0xffff] > [ 0.378712] pci_bus 0000:00: root bus resource [mem 0x00000000-0xffffffffff] > [ 0.378712] pci_bus 0000:00: root bus resource [bus 00-ff] I have not seen anything like that before. Usually you get non-zero offset windows for memory resources separating 32-bit non-prefetchable from the prefetchable. Assuming what you're showing is fine, this says you've 1TB memory addressable space available to the root bus. Each of your device's memory requires 128GB and 32MB, both 64-bit non-prefetchable BARs. Due to alignment requirements, your GPUs should need at least 2TB of IO memory space to satisfy their memory request. That's probably not very helpful information, though. I'll look if there's something creating a 1TB limit in qemu, but I'm honestly not very familiar enough in that particular area.
