On Tue, 2008-03-18 at 09:45 -0500, Nathan Lynch wrote: > Benjamin Herrenschmidt wrote: > > > > On Mon, 2008-03-17 at 19:34 -0500, Olof Johansson wrote: > > > On Mon, Mar 17, 2008 at 02:54:19PM +1100, Tony Breeds wrote: > > > > Currently HEA requires 4K pages for IO resources. Just set the pages > > > > size to > > > > IO to 4K. > > > > > > Well, that's too bad. Why penalize all platforms for it? > > > > > > I.e.: Nack, we use 64K iopages on pa6t and it works well. No need to > > > waste tlb and erat space. > > > > We would have to make that pSeries specific for now I suppose... > > > > We don't have a way to know that there "can" be an EHEA right ? It may > > not be in the device-tree at boot and dynamically added to the > > partition... > > The ibm,drc-names property of the root node should have "HEA" strings > in it on systems where EHEA can potentially be present.
Ah good, I didn't know. That will force us to stick an ugly wart somewhere to test it though, maybe we can just force mmu_ci_restrictions to 1 ? Paul what do you think ? Ben. _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-dev
