Comment 15 for bug 1805913

Yes, using a 32-bit host QEMU process will also work. You might run into a few guest programs that don't work with that -- a 64-bit QEMU process allows us to give the guest the full address space it might need, while a 32-bit QEMU process means that QEMU itself must share with the guest, so if the guest uses a lot of virtual memory or is picky about where it maps things then it might fail to mmap() things where it wants them. But it's probably overall the least-bad workaround at the current time.