Andreas Kling ad1f79fb4a Kernel: Stop allocating page tables from the super pages pool ...

We now use the regular "user" physical pages for on-demand page table
allocations. This was by far the biggest source of super physical page
exhaustion, so that bug should be a thing of the past now. :^)

We still have super pages, but they are barely used. They remain useful
for code that requires memory with a low physical address.

Fixes #1000.

2020-01-17 22:34:36 +01:00

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