Fill in July 2026 issue: rust-osdev projects, infrastructure, news

content/this-month/2026-07/index.md

@@ -1,6 +1,6 @@
 +++
 title = "This Month in Rust OSDev: July 2026"
-date = 2026-08-01
+date = 2026-08-11
 
 [extra]
 month = "July 2026"
@@ -40,7 +40,16 @@ Please follow this template:
   - (optional) Some additional context
 -->
 
-<span class="gray">No content was submitted for this section this month.</span>
+<!-- TODO human: paste OS-dev-relevant r/rust top-of-month posts and Zulip
+     newsletter suggestions here (the routine cannot fetch either source) -->
+
+- [Progress toward compiling Linux with gccrs](https://lwn.net/SubscriberLink/1083202/f1ba926cd57ac5c5/)
+  - An LWN report on the gccrs effort to make GCC compile the Rust code in the Linux kernel, covering the work done this year on resource management, name resolution, and attribute handling, tested against the kernel's own crates.
+- [This Month in Redox - June 2026](https://www.redox-os.org/news/this-month-260630/)
+  - Redox received an NGI Zero Commons/NLnet grant for "Virtualized Redox" (running Redox as a web server and microservices runtime under rust-vmm/QEMU), moved file descriptor allocation from the kernel to userspace, and gained USB gamepad support plus a GTK 3 backend for Orbital.
+- [rustc_codegen_gcc: Progress Report #42](https://blog.antoyo.xyz/rustc_codegen_gcc-progress-report-42)
+  - The latest report on the GCC codegen backend for `rustc`: five merged libgccjit patches, LTO handling improvements, and continued work toward m68k support.
+- [The Embedded Rustacean Issue #76](https://www.theembeddedrustacean.com/p/the-embedded-rustacean-issue-76)
 
 ## Infrastructure and Tooling
 
@@ -53,7 +62,23 @@ In this section, we collect recent updates to `rustc`, `cargo`, and other toolin
   - (optional) Some additional context
 -->
 
-<span class="gray">No content was submitted for this section this month.</span>
+- The move of `std::io` into `core` and `alloc` continued at a fast pace this month. After `io::Error` landed in `core` in June, most of the remaining building blocks followed, so that `Read`, `Write`, `Seek`, and the buffered wrappers are now usable without `std`:
+  - [Move `SizeHint` and `IoHandle` to `core::io`](https://github.com/rust-lang/rust/pull/158539)
+  - [Move `std::io::Seek` to `core::io`](https://github.com/rust-lang/rust/pull/158540)
+  - [Move `std::io::Write` to `core::io`](https://github.com/rust-lang/rust/pull/158541)
+  - [Move `std::io::Read` to `alloc::io`](https://github.com/rust-lang/rust/pull/158544)
+  - [Move `std::io::read_to_string` to `alloc::io`](https://github.com/rust-lang/rust/pull/158545)
+  - [Move `std::io::BufRead` to `alloc::io`](https://github.com/rust-lang/rust/pull/158546)
+  - [Move `std::io::buffered` to `alloc::io`](https://github.com/rust-lang/rust/pull/158547)
+  - See the [tracking issue for `alloc::io` and `core::io`](https://github.com/rust-lang/rust/issues/154046) for the remaining work.
+- [allow `Allocator`s to be used as `#[global_allocator]`s](https://github.com/rust-lang/rust/pull/157153)
+  - Adds a `GlobalAllocator` marker trait so that types implementing the newer `Allocator` trait can be installed as the global allocator, without implementing `GlobalAlloc` directly and risking infinite recursion.
+- [Stabilize c-variadic function definitions](https://github.com/rust-lang/rust/pull/155697)
+  - Rust code can now *define* C-style variadic functions, not just call them, which is needed when implementing C-compatible interfaces such as a libc from scratch.
+- [make volatile operations const](https://github.com/rust-lang/rust/pull/159092)
+  - Volatile reads and writes are now usable in `const fn`, which allows sharing code paths between MMIO-style special memory and regular memory.
+- [Implement `ptr::{read,write}_unaligned` via `repr(packed)`](https://github.com/rust-lang/rust/pull/158427)
+  - Reimplements the unaligned pointer accessors on top of `repr(packed)` fields instead of `memcpy` and intrinsics, producing much simpler MIR and enabling further optimizations.
 
 ## `rust-osdev` Projects
 
@@ -71,7 +96,87 @@ In this section, we give an overview of notable changes to the projects hosted u
     <<changelog, either in list or text form>>
 -->
 
-<span class="gray">No projects updates were submitted this month.</span>
+### [`uefi-rs`](https://github.com/rust-osdev/uefi-rs)
+<span class="maintainers">Maintained by [@GabrielMajeri](https://github.com/GabrielMajeri), [@nicholasbishop](https://github.com/nicholasbishop), and [@phip1611](https://github.com/phip1611)</span>
+
+`uefi` makes it easy to develop Rust software that leverages safe, convenient,
+and performant abstractions for UEFI functionality.
+
+We merged the following PRs this month:
+
+- [uefi: add driver helper](https://github.com/rust-osdev/uefi-rs/pull/1989)
+- [doc: add showcases to README](https://github.com/rust-osdev/uefi-rs/pull/1996)
+- [release: uefi-raw-0.15.1 and uefi-0.39.0](https://github.com/rust-osdev/uefi-rs/pull/2004)
+
+<!-- - [chore(deps): lock file maintenance](https://github.com/rust-osdev/uefi-rs/pull/1999) -->
+<!-- - [chore(deps): update rust crate time to v0.3.47 [security]](https://github.com/rust-osdev/uefi-rs/pull/2000) -->
+<!-- - [fix(deps): update rust crate itertools to 0.15.0](https://github.com/rust-osdev/uefi-rs/pull/2001) -->
+<!-- - [chore(deps): update actions/checkout action to v7](https://github.com/rust-osdev/uefi-rs/pull/2002) -->
+<!-- - [chore(deps): update codecov/codecov-action action to v7](https://github.com/rust-osdev/uefi-rs/pull/2003) -->
+<!-- - [chore(deps): lock file maintenance](https://github.com/rust-osdev/uefi-rs/pull/2012) -->
+<!-- - [chore(deps): update rust crate time to v0.3.47 [security]](https://github.com/rust-osdev/uefi-rs/pull/2013) -->
+<!-- - [chore(deps): update crate-ci/typos action to v1.48.0](https://github.com/rust-osdev/uefi-rs/pull/2015) -->
+
+Thanks to [@reynoldsbd](https://github.com/reynoldsbd) and [@sermuns](https://github.com/sermuns) for their contributions!
+
+### [`acpi`](https://github.com/rust-osdev/acpi)
+<span class="maintainers">Maintained by [@IsaacWoods](https://github.com/IsaacWoods)</span>
+
+The `acpi` repository contains crates for parsing the ACPI tables – data structures that the firmware of modern computers uses to relay information about the hardware to the OS.
+
+We merged the following changes this month:
+
+- [Handle DerefOf buffer fields](https://github.com/rust-osdev/acpi/pull/317)
+- [Skip unsupported _CRS resource descriptors](https://github.com/rust-osdev/acpi/pull/316)
+- [Demonstrate that less-than-all features will build](https://github.com/rust-osdev/acpi/pull/314)
+
+Thanks to [@ArthurHeymans](https://github.com/ArthurHeymans) and [@martin-hughes](https://github.com/martin-hughes) for their contributions!
+
+### [`x86_64`](https://github.com/rust-osdev/x86_64)
+<span class="maintainers">Maintained by [@phil-opp](https://github.com/phil-opp), [@josephlr](https://github.com/orgs/rust-osdev/people/josephlr), and [@Freax13](https://github.com/orgs/rust-osdev/people/Freax13)</span>
+
+The `x86_64` crate provides various abstractions for `x86_64` systems, including wrappers for CPU instructions, access to processor-specific registers, and abstraction types for architecture-specific structures such as page tables and descriptor tables.
+
+We merged the following changes this month:
+
+- [feat: Added the "from_pfn" in PhysFrame](https://github.com/rust-osdev/x86_64/pull/593)
+- [add missing {forward,backward}_overflowing impls](https://github.com/rust-osdev/x86_64/pull/595)
+- [release 0.15.5](https://github.com/rust-osdev/x86_64/pull/596)
+
+<!-- - [chore: merge master into next](https://github.com/rust-osdev/x86_64/pull/598) -->
+<!-- - [Bump actions/cache from 5 to 6](https://github.com/rust-osdev/x86_64/pull/591) -->
+
+Thanks to [@zhangxuan2011](https://github.com/zhangxuan2011), [@tpdenk](https://github.com/tpdenk), and [@Wasabi375](https://github.com/Wasabi375) for their contributions!
+
+### [`bootloader`](https://github.com/rust-osdev/bootloader)
+<span class="maintainers">Maintained by [@phil-opp](https://github.com/phil-opp) and [@Freax13](https://github.com/Freax13)</span>
+
+The `bootloader` crate implements a custom Rust-based bootloader for easy loading of 64-bit ELF executables. We merged the following changes this month:
+
+- [Release 0.11.16](https://github.com/rust-osdev/bootloader/pull/570)
+- [Revert `uart_16550` version bump to 0.6.0](https://github.com/rust-osdev/bootloader/pull/575)
+- [Release v0.11.17](https://github.com/rust-osdev/bootloader/pull/576)
+
+<!-- - [Fix workspace.exclude in Cargo.toml](https://github.com/rust-osdev/bootloader/pull/571) -->
+<!-- - [update Cargo.lock for basic example](https://github.com/rust-osdev/bootloader/pull/572) -->
+<!-- - [Make release script more robust and send user agent](https://github.com/rust-osdev/bootloader/pull/577) -->
+
+<!--
+    The `softfloat` target-ABI fixes (bootloader #568 and #569) and the
+    `uefi` bump (#566) merged in early July, but were already reported in the
+    June 2026 issue, so they are not repeated here.
+-->
+
+Thanks to [@Wasabi375](https://github.com/Wasabi375) for their contribution!
+
+<!--
+    The following projects had only dependency/chore updates this month and are
+    therefore not listed above:
+    - ovmf-prebuilt: #322, #323, #324, #325, #327, #330, #331, #332, #333
+      (all "chore(deps): lock file maintenance")
+    - multiboot2: #303, #304, #305, #306 (all dependabot bumps)
+    - uart_16550: #62, #63, #64 (all dependabot bumps)
+-->
 
 ## Other Projects