> > If you're interressed in such a feature, you may take a look of what > > I've done in hw/ppc405_uc.c. There are some device sharing the same > > memory page on those microcontrollers so I introduced a fake device > > called mmio that allow to register multiple devices into a single page > > in Qemu. I do use the serial_mm_init with the ioregister parameter set > > to 0 for those designs. > > This code may not be as generic as it would be if we want to make it a > > standard Qemu function, but this may give a basis or ideas for it. > > On Sparc32 there are several devices that would benefit from sub-page > granularity, so I vote for making this generic.
While you're fixing this, it would be good to fix overlapping devices as well ;-) Currently if you (temporarily) have overlapping regions then remove one of them you end up with unmapped memory. It may also make implementing flash devices simpler. Paul
