Re: Serial Port access from kernel

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On Wed, Dec 26, 2001 at 11:22:09AM -0500, Javier Guerra wrote:
> >Use the flash bootloader to load both the kernel and a filesystem into RAM
> 
> i'll have to put sides with the original poster... i'd love to have a 
> small kernel with no filesystem support.  i think that for many 
> purposes the memory->filesystem dichotomy is ill-suited

Nonsense. If you're doing without a filesystem, you can't do userland
_at all_.

You need userland to start whatever you want your system to do (router,
print server, etc.). The kernel itself only implements the
_mechanisms_ needed to be able to fullfill its task (TCP/IP stack for a
print server, for example), but it needs userland to implement the
_policy_ (BSD LPR vs. SMB printing protocol, for example).

> but a unix-like system (like linux) doesn't seem the best way... 

A UNIX-like system is a perfectly valid way, but you'll have to
understand the design philosophy: mechanism belongs to kernel, policy
should be done in userland.


Erik

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