[PLUG] 4GB Address space ?

Rogan Creswick creswick at cs.orst.edu
Tue Dec 17 09:50:25 UTC 2002


> Is that physical memory, or virtual memory?  Can it address more than         
> that amount of virtual memory, but only 4GB at a time, or what?

Since it is a 32 bit architecture, I'm pretty sure it can only address
4 gigs of virtual memory (2^32 == 4gig). I _think_ this is
per-process, so each process could have a 4gig memory space, but I
could easily be wrong there.

-Rogan


On Tue, Dec 17, 2002 at 01:43:57AM -0800, Karl M. Hegbloom wrote:
> The "mmap" man page and the help screens in the Linux kernel "make
> menuconfig" say that the IA32 can address 4GB of memory...
> 
> Is that physical memory, or virtual memory?  Can it address more than
> that amount of virtual memory, but only 4GB at a time, or what?
> 
> 
> 
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