[hppa-linux] Picky details of TLB fault handlers

[Christopher Neufeld <neufeld@physics.utoronto.ca>]

   Here's a question probably best suited for the folks at HP. The
PA-RISC 2.0 documentation says that a (software) TLB miss fault handler
cannot use virtual addressing. OK, what constitutes an exit from the
handler? Can you use virtual addressing after the last modification the
handler makes to the TLB (perhaps after executing several instructions
which don't require virtual addressing to load the pipeline), or do you
have to execute an explicit return from interrupt?


-- 
 Christopher Neufeld                   neufeld@physics.utoronto.ca
 Home page:  http://caliban.physics.utoronto.ca/neufeld/Intro.html
 "Don't edit reality for the sake of simplicity"