Should be no problem. /emul/linux is just a link to /usr/pkg/emul/linux by default, it can be separate partition of course or anything else, it doesn't matter.
Is it possible to run one's own little Linux in NetBSD by null-mounting directory or partition on /emul/linux?
I am thinking in particular of my own cross-compiled version (from FreeBSD or NetBSD on amd64 aka x86_64) still in infancy, with busybox or otherwise?
This busybox is cross-compiled for Linux (i486-linux-musl or x86_64-linux-musl).
Currently, this is on UFS2 aka ffsv2 file system.
Would the Linux C library have to be glibc, or could it be uClibc-ng or (more likely) musl?
I would want to be able to try with more than one infant Linux installation (one at a time), hence the desire to null-mount on /emul/linux rather than copying to /emul/linux.
Tom