John Carmack on the Goose Language: multiple data stacks and relative references

Re:John Carmack on the Goose Language: multiple data stacks ... by cardboardguru on Sunday October 25, 2026 @01:19AM (#50228564)

All it's doing is allocating address space. And 64 bits means you have an astronomical amount of that. It only needs to become actual memory when you use it. A page at a time.

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Re:John Carmack on the Goose Language: multiple data stacks ... by adwn on Sunday October 25, 2026 @05:33AM (#50229734)

> All it's doing is allocating address space. And 64 bits means you have an astronomical amount of that.

No, you can typically only assume 48 bits of virtual address space; the kernel takes half of it, so really only 47 bits. Newer CPUs provide 57 bits (e.g., Zen 4) or 52 bits (certain ARM64 models). And that's provided that the kernel plays ball; apparently some Android configurations only support 39 bits of user virtual address space.

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