[Ffmpeg-devel] Re: [PATCH] Fix compilation when using --disable-opts

Måns Rullgård mans
Sun Apr 1 15:04:38 CEST 2007

Kostya <kostya.shishkov at gmail.com> writes:

> On Sun, Apr 01, 2007 at 12:41:56PM +0100, M?ns Rullg?rd wrote:
>> I figured that's what you meant, although with a 64-bit address space
>> even truly globally unique addresses would be theoretically possible.
>> In practice there would of course be the problem of coordination.
>> Besides, no current CPUs have a full 64-bit address space.
> I remember from OS course that IBM had (has?) true 64-bit operating
> system where every resource (including files) has its own memory address
> so no memmapping needed too.

Those machines probably have something like a 48-bit virtual address
space.  That gives you 256 terabytes, which is more than enough for
any one machine (except maybe a few really large ones).  It's far from
enough for all data in the world, however.

M?ns Rullg?rd
mans at mansr.com

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