Re: [Qemu-devel] [PATCH] memory: use signed arithmetic

[Avi Kivity]

On 08/03/2011 01:15 AM, Richard Henderson wrote:
> On 08/02/2011 03:06 PM, Avi Kivity wrote:
> >  I don't think there's any cpu which has a real 64-bit physical
> >  address space? Don't they all truncate it?
>
> I don't know.  You're right that x86_64 does, at 48 bits.
> The alpha system I'm trying to emulate does, at 50 bits.
>
> I guess if IBM agrees wrt p-series and z-series emulation, then
> I'd be ok, so long as you add a comment above that structure that
> says no existing hw implementation actually uses 63 address bits.

Ben, can you confirm that pseries physical addresses are 63 bits wide or 
smaller?

IIRC zseries has no mmio, and Zettabyte machines are still rare.

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error compiling committee.c: too many arguments to function