LXer: This week at LWN:
 

Published at LXer:

The kernel has historically been developed independently of anything that runs in user space. The well-defined kernel ABI, built around the POSIX standard, has allowed for a nearly absolute separation between the kernel and the rest of the system. Linux is nearly unique, however, in its division of kernel and user-space development. Proprietary operating systems have always been managed as a single project encompassing both user and kernel space; other free systems (the BSDs, for example) are run that way as well. Might Linux ever take a more integrated approach?

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