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Lazily allocate page tables #186

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egranata opened this issue Feb 6, 2019 · 0 comments
Open

Lazily allocate page tables #186

egranata opened this issue Feb 6, 2019 · 0 comments
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enhancement New feature or request good first issue Good for newcomers help wanted Extra attention is needed

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@egranata
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egranata commented Feb 6, 2019

https://github.com/egranata/puppy/blob/master/kernel/src/mm/virt.cpp#L609 creates a new address space by eagerly allocating all page tables, even though most will stay at empty/nothing mapped.

This could be made lazy by only mapping in the kernel pages at first, and letting userspace fault and only then filling in a new page table with actual backing RAM
@egranata egranata added enhancement New feature or request help wanted Extra attention is needed good first issue Good for newcomers labels Feb 6, 2019
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enhancement New feature or request good first issue Good for newcomers help wanted Extra attention is needed
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