On Thu, Nov 07, 2002 at 10:51:31AM -0500, John Baldwin wrote:
> Doing I/O from userland generally isn't supported.  A header with <sys/>
> is a kernel header though, not a userland one. :)

Only on traditional Unix systems.  On Linux it never is.

> For i386-only, if
> you do the right calls to obtain permission to do I/O, the functions
> in machine/cpufunc.h should work however.

Of course you need the permission on linux aswell, and again only a
small number of ports actually supports it.  It's generally discuraged.


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