On Sun, Jun 26, 2005 at 11:30:04AM -0300, Marcelo Tosatti wrote: > > Hi Dan, > > On Sat, Jun 25, 2005 at 06:24:47PM -0400, Dan Malek wrote: > > > > On Jun 25, 2005, at 10:53 AM, Marcelo Tosatti wrote: > > > > >Dan: I dont think ioremap() is an issue because it never works inside > > >the > > >kernel's static virtual address space (which is the only one we're > > >interested > > >in having pinned at the moment). > > > > Take a close look at the initialization code. I believe it also > > pins the IMMR space, which is subject to ioremap(). > > OK. Now that makes me think that the IMMR pinned entry is also always > thrashed by the tlbie at map_page() :(
Bullshit, map_page()'s call for flush_HPTE() is conditioned by "mem_init_done", and mapin_ram() is called before mem_init_done is set. > The IMMR space is a 16kB window (correct?), so I wonder if it might > be better to the use occupied pinned slot for another more accessed > region (an 8MB one preferably!). Thats still some food for thought...
