Messages in this thread |  | | From | Jim Nance <> | Subject | Re: Byte article - 64 bit Unix (fwd) | Date | Sat, 26 Oct 1996 20:14:03 -0400 (EDT) |
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Forwarded message:
> > I think we need to distinguish a few things about 64 bit OS's... > > > > Does the user address space have 64 bit addressability? > > In theory Linux/Alpha could eventually give the user 62 bits of VM > address space. The current CPU implementations limit us to 43 bits. > > > Do file offsets have 64 bit addressability? > > Yes, off_t is 64 bits. None of the underlying filesystems currently > support files that big, but the VFS layer does not disallow it.
He is right. I guess I should have said that the capability of Linux/Alpha was significantly greater than 32 bits in these areas, which is not the same as being 64 bits. I guess I can be excused though. Digital says their Unix is 64 bits, and they have the 43 bit address limit too.
Jim
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