On 06/28/2011 03:07 PM, Jan Kiszka wrote:
> > The point is that different buses have different widths. > target_phys_addr_t matches just one bus in the system. It needs to be > the maximum size of all buses present to be useful. Then we need a type for that. Or we need to demand that target_phys_addr_t is defined large enough to support all buses that the particular arch wants to address. Hardcoding 64 bit or anything is not appropriate for a generic subsystem.
Okay, let's make t_p_a_t max(bus size in system). Do we have 32-bit targets that don't support pci (I guess, pc-isa with cpu < ppro?). Do we want to support a 32-bit variant of pci? It certainly existed at some point.
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