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Huge pages support for x86 #1016

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Huge pages support for x86 #1016

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NIMogen
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@NIMogen NIMogen commented Jul 24, 2023

PR as requested. Higher level page table entries (such as p2) are always marked as used for some reason.
Just a draft as this is a WIP and not actually ready yet.

@kevinaboos kevinaboos changed the title Issues with higher level entries in mapper Huge pages support for x86 Jul 26, 2023
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As discussed on discord, I can reproduce the error, which is caused by not using a range of pages and frames that are properly aligned to a 2MiB boundary.

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kevinaboos requested changes Aug 14, 2023
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This is a great start, thanks Noah! Now that the major functionality is working, I left lots of comments about style, correctness, using the type system & generics to their fullest effect, etc.

Please feel free to ask follow-up questions if you're confused or disagree with my comments, either here or on discord.

Also, I know this is a volunteer project for you, so if you don't have time or the desire to make some or all of these changes on your own, please let me know what you don't want to tackle, and I can definitely take over those changes (or a subset of them) myself.

kernel/pte_flags/src/pte_flags_x86_64.rs Show resolved Hide resolved
kernel/pte_flags/src/pte_flags_x86_64.rs Outdated Show resolved Hide resolved
kernel/page_allocator/src/lib.rs Outdated Show resolved Hide resolved
kernel/page_allocator/src/lib.rs Outdated Show resolved Hide resolved
kernel/page_allocator/src/lib.rs Outdated Show resolved Hide resolved
kernel/memory/src/paging/mapper.rs Outdated Show resolved Hide resolved
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kernel/page_allocator/src/lib.rs Outdated Show resolved Hide resolved
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applications/test_1gb_huge_pages/Cargo.toml Outdated Show resolved Hide resolved
@kevinaboos kevinaboos marked this pull request as ready for review August 14, 2023 22:35
@kevinaboos kevinaboos mentioned this pull request Aug 23, 2023
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@kevinaboos kevinaboos mentioned this pull request Sep 8, 2023
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@NIMogen NIMogen closed this Sep 9, 2023
@NIMogen NIMogen reopened this Sep 13, 2023
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