[Qemu-devel] Re: [PATCH 1/6] Use correct types to enable > 2G support

[Paul Brook]

> > I agree with the fact that ram_size should be 64 bit. Maybe each
> > machine could test the value and emit an error message if it is too
> > big. Maybe an uint64_t would be better though.
>
> uint64_t is probably more reasonable.  I wouldn't begin to know what the
> appropriate amount of ram was for each machine though so I'll let the
> appropriate people handle that :-)

I'd say ram_addr_t is an appropriate type.
Currently this is defined in cpu-defs.h. It should probably be moved elsewhere 
because in the current implementation it's really a host type.

If we ever implement >2G ram on a 32-bit host this may need some rethinking.  
We can deal with that if/when it happens though.  Requiring a 64-bit host for 
large quantities of ram seems an acceptable limitation (N.B. I'm only talking 
about ram size, not target physical address size).

Paul