I read https://wiki.netbsd.org/projects/project/userland_pci/ .
May somebody implement linux uio driver api or ddekit port to pci and usb device drivers (uio-compatible), created for linux kernel? P.S.: uio - user-space i/o. uio is comatible with 2.6 linux kernel baseline, which api level is used in linux user-space elf32/elf64 + abi implementation linuxulator on bsd. P.P.S.: ddekit is even partially ported to microkernel minix 3.
