On Wed, 2007-04-18 at 17:08 +0100, Paul Brook wrote: > > > 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.
What is the correct behavior in such a case ? What device would you actually see ? May be it different to one architecture to another ? I think there are busses and/or architectures where this is not possible, you would only get a fault on the bus in such a case. So it seems to me not to be easy to find a generic and appropriate way to fix this behavior, don't you think ? -- J. Mayer <[EMAIL PROTECTED]> Never organized
