On Mon, 1 Feb 1999 11:52:59 -0500 
 Chuck Cranor <chuck@research.att.com> wrote:

 > regarding the usage of pmap_kenter and its interaction with
 > mod/ref bits and VAC aliases: you are only supposed to use
 > pmap_kenter() for mapping where those issues don't matter
 > (e.g. private kernel mappings).   John Dyson's message clearly
 > explained it the way i was thinking about it so i won't bother 
 > to repeat it again.

Hm, okay.

But, what happens on VAC systems if you e.g. mmap /dev/mem, and happen
to mmap one of those pages?

Regarding the use of pmap_kenter() and uvm_loan(), perhaps I misunderstood
something you said when we discussed that in private e-mail all those
months ago.  "Dave, my mind is going..."

        -- Jason R. Thorpe <thorpej@nas.nasa.gov>