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The Grumpy Editor goes 64-bitThe Grumpy Editor goes 64-bitPosted Apr 15, 2004 2:38 UTC (Thu) by tjc (subscriber, #137)In reply to: The Grumpy Editor goes 64-bit by corbet Parent article: The Grumpy Editor goes 64-bit Unless, of course, you want to get back into multiple memory models and "near" and "far" addresses. Personally, I don't miss those days at all. Nor do I, and to be honest, I'm not really "up" on the details of memory management in Linux. But it seems to me that going to a 64-bit address space isn't free either. For one thing, if you use hierarchial paging, either the page table is going to be huge, or else you're going to end up with about 6 levels of indirection, which has got to be slow too. My best guess is that they hash the page table somehow? Anyway, I'll let you see how it goes, and I'll move to 64-bit when it's safe - say in 3 or 4 years. :-)
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The Grumpy Editor goes 64-bit Posted Apr 15, 2004 4:07 UTC (Thu) by smoogen (subscriber, #97) [Link] Its not really the memory management of the Linux box as much as the memory management of the PC architecture itself. There are limits to where a PCI bus, BIOS, and other things can be 'hacked' to working and each time more memory is extended it gets more hackish than a 'clean-minimalist fix'
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