Marcelo Tosatti wrote: > On Wed, Mar 23, 2005 at 11:12:11AM -0500, Dan Malek wrote: > >>On Mar 23, 2005, at 5:25 AM, Marcelo Tosatti wrote: >> >> >>>You misunderstood: get_mmu_context() _wont_ be called if the mm >>>structures >>>are the same. >> >>I understood. At most, get_mmu_context() will only do a 'tlbia' >>instruction, I didn't see your reason for thinking this would have >>an effect on the tlbie usage. > > > OK. That is not a good reason, indeed. > > >>>>Well, that's interesting. It's likely to only happen on an 860 >>>>variant >>>>that >>>>has the large TLB. >>> >>>For what reasoning? >> >>My initial debugging seemed to indicate a stale TLB entry. With >>the larger TLB this is more likely to happen. The bug was never >>seen on the 823/850 with smaller TLBs. >> >>I have a new 8xx board now, so I'll have to start working on these >>issues as well. > > > OK!
I've just managed to get 2.6.12-rc1 running on my 870 based board and the tlb invalidate is still needed. Investigating... Regards Pantelis
