On Thu, Apr 24, 2025 at 10:19:44PM +0530, Maverickk 78 wrote: > Hello, > > The command line parameter > > pciehp.pciehp_force=1 pciehp.pciehp_debug=1 pcie_ports=native > pci=nocrs pci=hpmemsize=256M,realloc pci=noacpi pci=realloc=on > pci=nobios > > > There are a couple of endpoints connected to downstream ports on a > switch, and the endpoints are not visible during the BIOS (seabios) > enumeration, but they are brought out of reset just before kernel > starts pci scan. > > Even though the kernel enumerates the endpoint with proper bdf and is > able to read the config space but its not able to properly program the > BAR register, the lspci lists as > > > Region 0: Memory at <unassigned> (32-bit, non-prefetchable) [disabled] > [size=32M] > > > This is an emulation platform. Can't really give any suggestions without seeing a complete dmesg log and output of "sudo lspci -vv". This will give insight into how much space the devices require and what space is available. Bjorn
