Hi, > I'm running a x86 QEMU with Ubuntu. On this system we want to emulate > a PCIe device which contains a large 32-bit BAR (2 GiB). This is not > working and I get following error:
Why a 32-bit bar, not a 64-bit bar? A 2G 32-bit bar simply can't be mapped anywhere on x86. It must be below 4G, and it must be 2G-aligned. Which leaves exactly two options: 0G -> 2G or 2G -> 4G. Both overlap with resources critical for x86 boot, the former with the real mode address space (0-1M) and the latter with lapic, ioapic, hpet, tpm etc just below 4G. take care, Gerd _______________________________________________ SeaBIOS mailing list -- seabios@seabios.org To unsubscribe send an email to seabios-le...@seabios.org
