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Philipp Oppermann
2021-10-17 17:37:55 +02:00
parent 53e3578e34
commit a41d3236b8
8 changed files with 8 additions and 9 deletions
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blog/content/edition-1/posts/08-kernel-heap/index.md
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@@ -415,7 +415,7 @@ pub fn init(boot_info: &BootInformation) {
We've just moved the code to a new function. However, we've sneaked some improvements in:
- An additional `.filter(|s| s.is_allocated())` in the calculation of `kernel_start` and `kernel_end`. This ignores all sections that aren't loaded to memory (such as debug sections). Thus, the kernel end address is no longer artificially increased by such sections.
- We use the `start_address()` and `end_address()` methods of `boot_info` instead of calculating the adresses manually.
- We use the `start_address()` and `end_address()` methods of `boot_info` instead of calculating the addresses manually.
- We use the alternate `{:#x}` form when printing kernel/multiboot addresses. Before, we used `0x{:x}`, which leads to the same result. For a complete list of these “alternate” formatting forms, check out the [std::fmt documentation].
[std::fmt documentation]: https://doc.rust-lang.org/nightly/std/fmt/index.html#sign0

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blog/content/edition-1/posts/09-handling-exceptions/index.md
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@@ -379,7 +379,7 @@ Note how this solution requires no `unsafe` blocks or `unwrap` calls.
> ##### Aside: How does the `lazy_static!` macro work?
>
> The macro generates a `static` of type `Once<Idt>`. The [`Once`][spin::Once] type is provided by the `spin` crate and allows deferred one-time initialization. It is implemented using an [`AtomicUsize`] for synchronization and an [`UnsafeCell`] for storing the (possibly unitialized) value. So this solution also uses `unsafe` behind the scenes, but it is abstracted away in a safe interface.
> The macro generates a `static` of type `Once<Idt>`. The [`Once`][spin::Once] type is provided by the `spin` crate and allows deferred one-time initialization. It is implemented using an [`AtomicUsize`] for synchronization and an [`UnsafeCell`] for storing the (possibly uninitialized) value. So this solution also uses `unsafe` behind the scenes, but it is abstracted away in a safe interface.
[spin::Once]: https://docs.rs/spin/0.4.5/spin/struct.Once.html
[`AtomicUsize`]: https://doc.rust-lang.org/nightly/core/sync/atomic/struct.AtomicUsize.html