>>>> [...write to kernel text...]
>>> do you mean ZFOD?
>> No, COW.

I can't even see how COW even makes _sense_ for kernel text.  The only
way I can make any sense out of the idea is to assume that kernel text
is context-switched just like any other VM space, and that it normally
is just never written and never mapped differently to different
processes.  But I can't reconcile that with what I know about machines
like the VAX (where kernel text is in system space and thus isn't
context-switched).

What am I missing?

					der Mouse