On 18.12.2013, at 23:07, Alexander Graf <ag...@suse.de> wrote: > > On 18.12.2013, at 23:04, Benjamin Herrenschmidt <b...@kernel.crashing.org> > wrote: > >> On Wed, 2013-12-18 at 22:24 +0100, Alexander Graf wrote: >>> Then I don't understand why we break when we limit the data region to >>> 4 bytes. >> >> This is old uninorth, not U3 HT right ? The latter is memory mapped. > > Depends, we use the same code to cover both. With 32bit guests we expose an > old UniNorth. With 64bit guests we have to expose a U3 as the guest doesn't > know what old UniNorth is anymore. > > So yeah, maybe that's biting us.
But then again the breaking case was with a G4 which was 32bit so it should have emulated an old UniNorth. Hrm. Alex
