Messages in this thread | | | From | Miguel Ojeda <> | Date | Wed, 14 Apr 2021 21:50:35 +0200 | Subject | Re: [PATCH 07/13] Rust: Kernel crate |
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On Wed, Apr 14, 2021 at 9:31 PM Linus Torvalds <torvalds@linux-foundation.org> wrote: > > Again, excuse my lack of internal Rust knowledge, but when do these > end up being an issue? > > If the Rust compiler ends up doing hidden allocations, and they then > cause panics, then one of the main *points* of Rustification is > entirely broken. That's 100% the opposite of being memory-safe at > build time.
Of course! What happens here is that we use, for the moment, `alloc`, which is part of the Rust standard library. However, we will be customizing/rewriting `alloc` as needed to customize its types (things like `Box`, `Vec`, etc.) so that we can do things like pass allocation flags, ensure we always have fallible allocations, perhaps reuse some of the kernel data structures, etc.
Cheers, Miguel
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