time of day (EROS/KeyKOS divergence)
Sat, 21 Nov 1998 20:35:19 -0500
> If it [the time of day page] is implemented by updating a page
> whenever the time changes (the resolution being low enough to make
> this feasible), there is no need to do this in the kernel. Any user
> can provide this service by waiting until a time change and updating
> an ordinary page.
I chose a kernel implementation because I may want the time of day (or
some equivalent) page to include a tick-granularity clock. At tick
granularity, I definitely don't want to be scheduling a user-mode
Otherwise, your point is well taken.