Truly Free drivers could use a stable API too
Posted Nov 10, 2005 10:09 UTC (Thu) by simlo
In reply to: Truly Free drivers could use a stable API too
Parent article: On binary drivers and stable interfaces
To install a new kernel you have to reboot - very Windoze like :-(
I totally agree with the long comment above: What is needed is a "micro-kernel" approach. Drivers should be able to run in user-space. The stable driver API should be in user-space. Hardware vendors can use that to write their close source drivers. That way experiments like Ingo's realtime-patch would still work since no closed source module have access to any kernel internals - only a few system calls. If hardware vendors complain over performance: Release the driver under GPL and move it into the kernel.
If a company do not want to do that, someone could trace what is going on between the driver and the kernel and thus more easily write a free driver.
I have dropped the smb/cifs drivers in the kernel and use smbnetfs which is build on top of fuse. Now a bug in the smb implementation can't crash my machine. I can even use Kerberos as authentification. Moving stuff into userspace _works_ - at least sometimes. Please, don't go into religious war between microkernel vs. monolitic kernels. As I see it Linux should be a _mixture_ using both techniques where they fit best weighing performance, stability, ease of development, flexibility and licensing issues.
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