On Thu, 6 Jan 2011, Toru Nishimura wrote: > I would propose here to add a new hook in exception return > path for every NetBSD ports. The hook point is at right > after ast() call. The hook is to call TLB ASID bump op > (to write EntryHi with a single mtc0 instruction for MIPS > architecture , for example). It should be noted that the > hook is also useful to do "isync operation" for the process > which needs to invalidate instruction cache to continue.
I think exposing this implementation detail breaks the abstraction layer provided by pmap(9) and thus is a bad thing. Eduardo
