On 02/26/2015 06:51 PM, David Daney wrote: > > That's not really what I meant in my previous response on the subject. > When I said: > > Why not just use RI for everything, instead of taking up two bits > to represent a single binary concept? > > For the case where there is no RI hardware active, it is a purely > software bit and you can easily invert the meaning and just have a > _PAGE_NO_READ bit. > > I envisioned something like: > > 64-bit, all revisions: CCC D V G RI XI [S H] M A W P > 32-bit, all revisions: CCC D V G RI XI M A W P > Which is what I implemented. I now only use one bit that functions either as _PAGE_READ or _PAGE_READ_ONLY depending on the RI/XI functionality present. Did you bother to read the code and understand it, or just look at the commit message? Steve
