Messages in this thread | | | From | "H. Peter Anvin" <> | Subject | Re: using more than 2 GB as a ram disk | Date | Wed, 3 Feb 1999 17:46:44 -0800 (PST) |
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> > The Alpha only has about 43 address bits; is the Alpha not 64-bit? >
The Alpha can be extended to 64 bits **WITHOUT SOFTWARE IMPACT**.
> > you either store pointers in a non-flat format or normalize > > them every time; > > Yes, exactly. For userspace, this is hidden by the compiler. > > > once (or if) Intel adds more adds more address bits than 36 > > you're hosed again. > > At that point I expect a fix for the virtual address space too. > If not, you can extend the hack a bit. Don't use Electric Fence.
... and your old binaries are worthless.
> > Not to mention the cost to load segments for every reference. > > The compiler may be able to reduce it a bit. Even if not, I have > yet to see another proposal that gets the job done on ia32. > > In other words: I did it! I claim bragging rights to this abomination.
These kinds of proposals have been around for a long time (I remember seeing them back in the i386 days, using external logic.) They're just as useless now as then.
-hpa
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