On Fri, Dec 06, 2002 at 03:53:42PM -0500, Neal H. Walfield wrote: > 64-bit systems do not necessarily give you 64-bits of virtual address > space (even discounting the kernel's area). Alpha, for instance, only > gives you 43 bits. There are real practical reasons for doing this: > the page tables become far too deep and costly for no benefit (8k > pages => 13 bits + 10k entries per page table * 3 levels of page > tables).
If you use 8Kbyte pages. 64Kbyte pages gives you already 55 bits of virtual address space. :) Cheers, p2. _______________________________________________ Bug-hurd mailing list [EMAIL PROTECTED] http://mail.gnu.org/mailman/listinfo/bug-hurd
