Project Goals october update #1423
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ehuss
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Oct 31, 2024
traviscross
reviewed
Oct 31, 2024
Co-authored-by: Eric Huss <[email protected]>
Co-authored-by: Eric Huss <[email protected]>
Co-authored-by: Eric Huss <[email protected]>
Co-authored-by: Travis Cross <[email protected]>
traviscross
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Oct 31, 2024
RalfJung
reviewed
Nov 1, 2024
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| We have made significant progress on resolving blockers to Linux building on stable. Support for struct fields in the `offset_of!` macro has been stabilized. The final naming for the "derive-smart-pointer" feature has been decided as `#[derive(CoercePointee)]`; @dingxiangfei2009 prepared [PR #131284](https://github.com/rust-lang/rust/pull/131284) for the rename and is working on modifying the rust-for-linux repository to use the new name. Once that is complete, we will be able to stabilize. We decided to stabilize [support for references to statics in constants pointers-refs-to-static feature](https://github.com/rust-lang/rust/issues/128183) and are now awaiting a stabilization PR from @dingxiangfei2009. |
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Hasn't the stabilization PR for this long landed?
Also, as a general note it'd be nice to give credit not only to the people pushing through the final stabilization, but also to the people doing the earlier implementation work. :)
RalfJung
reviewed
Nov 2, 2024
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| Rust for Linux (RfL) is one of the major users of the asm-goto feature (and inline assembly in general) and we have been examining various extensions. @nbdd0121 authored a [hackmd document](https://hackmd.io/@nbdd0121/BJlVrepa0) detailing RfL's experiences and identifying areas for improvement. This led to two immediate action items: making target blocks safe-by-default ([rust-lang/rust#119364](https://github.com/rust-lang/rust/issues/119364)) and extending `const` to support embedded pointers ([rust-lang/rust#128464](https://github.com/rust-lang/rust/issues/128464)). | ||
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| Finally, we have been finding an increasing number of stabilization requests at the compiler level, and so @wesleywiser and @davidtwco from the compiler team have started attending meetings to create a faster response. One of the results of that collaboration is [RFC #3716], authored by Alice Ryhl, which proposes a method to manage compiler flags that modify the target ABI. Our previous approach has been to create distinct targets for each combination of flags, but the number of flags needed by the kernel make that impractical. Authoring the RFC revealed more such flags than previously recognized, including those that modify LLVM behavior. |
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Authoring the RFC revealed more such flags than previously recognized, including those that modify LLVM behavior.
Most of these have actually been discovered independently of the RFC, and it is discovering them that led to the RFC being written. (This all started with rust-lang/rust#116344 and rust-lang/rust#116558.)
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