Hermit Kernel Files

🚀 Features

• Support regularly printing allocation stats
• Always log targets
• Add warn-prebuilt feature
• (Cargo.toml) Don't build staticlib by default
• (Cargo.toml) Harmonize virtio feature names
• Support virtio-fs-mmio
• Print target architecture on boot
• (xtask) Replace --instrument-mcount with feature
• (Cargo.toml) Deprecate fs feature
• Don't reexport create_file at the crate root
• Rename trace feature to net-trace
• (Cargo.toml) Deprecate nostd feature
• (syscalls) Make mman public

🐛 Bug Fixes

• (virtio) Remove unused BufferError
• (xtask) Retry Firecracker on failure
• (x86_64) Remove unused remains of recursive page tables
• (pci) Handle error values for IRQ number
• (virtio) Remove unused rank field
• (virtio) Don't print capability ID when irrelevant
• (virtq/split) Don't box TransferTokens
• Function_casts_as_integer
• (pcie) Include the end bus number in scan and mapping
• (syscall/socket) Follow POSIX and Linux for errno
• (syscall/socket) Check for socket flags validity
• (fs/mem) Don't implement min manually
• Avoid casting functions to usize if possible
• (arch/scheduler) Don't cast task_start to pointer
• (mem/fs) Return EOVERFLOW from lseek on overflow
• (mem/fs) Return EINVAL from ROM lseek for too large offsets
• (mem/fs) Fix(mem/fs): test all lseek cases for negative file offsets
• (fuse) Don't import alloc via crate
• (fs) Don't make inner handles public
• (aarch64) Align task_start signatures
• (arch/scheduler) Remove panicking task_start
• (virtio) Align device not supported logs
• (virtio) Enhance error message when feature is not activated
• (fs/mem) Remove unused methods
• (fs/mem) Don't allow dead_code
• (virtq) Make IndexAlloc start at low indixes
• (arch) Remove unused memory_barrier function
• (x86_64) Correctly report CPUID source for CPU frequency
• (Cargo.toml) Don't enable deprecated crate features
• (builtins) Allow building with --all-targets
• (syscalls/socket) Clippy::needless_late_init
• (virtio) Clippy::large_enum_variant
• (aarch64/mmio) Clippy::collapsible_if
• (x86_64/mmio) Use io::Result
• (x86_64) Support virtio-console-mmio
• (virtio-pci) Remove shared memory structures
• (virtio/transport) Remove unused ComCfg::dev_status
• (virtio-mmio) Remove unused ComCfg::get_queue_ready
• (virtio-pci) Gate NotifCfg::length
• (mmio) Print virtio-console info
• (riscv64/mmio) Dead_code
• (x86_64/mmio) Dead_code
• (virtio) Dead_code on VirtioError
• (virtio-fs-mmio) Print information
• Enable ACPI for SMP on x86_64
• Fuzzy_provenance_casts
• Lossy_provenance_casts
• Enable strict provenance lints
• (x86_64/apic) Corrected IOAPIC default address
• clippy::uninlined_format_args
• (macros) Use unambiguous format_args! path
• Tag all format-like macros with #[clippy::format_args]
• (macros) Use $crate in hermit_var!
• (macros) Use global paths
• (macros) Macro_expanded_macro_exports_accessed_by_absolute_paths
• (pci) Log errors in init
• (virtio) Log error when device does not accept features
• (arch/serial) Only be read_ready when data is available
• (virtio-fs) De-assert interrupts
• (tls) Create TLS for idle task when instrumenting the kernel
• (xtask) Demangle symbols when testing rftrace
• (virtio-fs) Register IRQ name
• (riscv64/scheduler) Align task_entry with AArch64
• (riscv64/scheduler) Clarify register functions
• (virtio-console) Align handle_interrupt to other impls
• (virtio/transport) Don't allow IsrStatus methods to be unused
• (virtio/transport) Merge IsrStatus::is_queue_interrupt into acknowledge
• Capitalize UEFI path
• (socket/tcp) When polling listening, poll all sockets
• (pci) Warn when virtio is disabled
• Unify Hermit name
• Remove manual feature logs

💼 Other

• (deps) Upgrade rust-toolchain to nightly-2025-12-01
• (deps) Don't use git source for x86_64 crate
• (xtask/deps) Don't depend on ureq/gzip
• (xtask) Feature-gate 'ci' subcommand
• (xtask/arch) Don't use anyhow
• (builtins) Fix Cargo.lock
• (deps) Upgrade rust-toolchain to nightly-2026-01-01
• (xtask) Run Clippy for virtio-mmio
• (xtask) Allow multiple occurrences of flags
• (deps) Update to trapframe 0.10.1
• (deps) Upgrade align-address to 0.4
• (deps) Upgrade rust-toolchain to nightly-2026-02-01
• (deps) Upgrade rand_chacha to 0.10
• (deps) Update Cargo.lock

🚜 Refactor

• Replace aarch64 crate with aarch64-cpu
• (aarch64) Replace dmb assembly with aarch64-cpu crate
• (aarch64) Replace isb assembly with aarch64-cpu crate
• (aarch64) Replace dsb assembly with aarch64-cpu crate
• (aarch64) Replace TPIDR_EL1 assembly with aarch64-cpu crate
• (aarch64) Replace ttbr0_el1 assembly with aarch64-cpu crate
• (aarch64) Replace wfe, wfi assembly with aarch64-cpu crate
• (aarch64) Replace id_aa64mmfr0_el1 assembly with aarch64-cpu crate
• (virtio) Migrate VirtqError to thiserror
• (pci) Migrate PciError to thiserror
• (virtio-net) Migrate VirtioNetError to thiserror
• (virtio-fs) Migrate VirtioFsError to thiserror
• (virtio-console) Migrate VirtioConsoleError to thiserror
• (virtio-vsock) Migrate VirtioVsockError to thiserror
• (virtio) Migrate VirtioError to thiserror
• (rtl8139) Migrate RTL8139Error to thiserror
• (gem) Migrate GEMError to thiserror
• (drivers) Migrate DriverError to thiserror
• (virtqueue) Remove VqSize newtype
• (virtqueue) Remove VqIndex newtype
• (pvirtq) Remove unused WrapCount::flag_mask
• (pvirtq) Remove WrapCount newtype
• (virtqueue) Remove MemDescrId newtype
• Use uhyve version define macro from hermit_entry
• (common-os) Use slice::from_raw_parts_mut instead
• (aarch64/serial) Safely maintain non-zero invariant
• (riscv64) Use env::fdt
• (riscv64/devicetree) Reduce unsafe scope
• (pvirtq) Use bitfields for RingIdx
• (pvirtq) Use bitfields for DescriptorRing::write_index and drv_wc
• (pvirtq) Use bitfields for DescriptorRing::poll_index and dev_wc
• (fs/mem) Use imported locks
• (fd) Remove Debug bound from ObjectInterface
• (mem/fs) Use match instead of if/else
• (mem/fs) Extract data_len in lseek
• Consistently use to_owned over to_string for str
• (riscv64) Make task_start a naked function
• (fs/mem) Get rid of another unnecessary allocation
• (xtask) Use cargo-rustc instead of cargo-build
• (xtask) Only build staticlib
• (fs/mem) Move RomFileInner's RwLock into it
• (virtq) Rename size to max_size
• (virtqueue) Use early continue in IndexAlloc::allocate
• Simplify virtio cfgs
• Rename console feature to virtio-console
• Rename fuse feature to virtio-fs
• Rename vsock feature to virtio-vsock
• (virtio-fs) Move fs/virtio_fs.rs to fs/mod.rs
• (virtio-fs) Rename virtio_pci.rs to pci.rs
• (virtio-fs) Make pci module private
• Rename VirtioDriver::Network to Net
• Rename VirtioDriver::FileSystem to Fs
• (virtio) Sort VirtioDriver variants
• (virtio) Sort virtio::Id variants
• (riscv64/devicetree) Simplify virtio init code
• (aarch64) Enable mmio module on virtio feature
• (aarch64/mmio) Use import
• (riscv64) Enable mmio module on virtio feature
• (virtio-net-mmio) Simplify VirtioNetDriver::init
• (virtio) Make allows more fine-grained
• (virtio) Unify feature negotiation
• (fd) Rename FileDescriptor to RawFd
• (mm) Extract common divisor
• Don't import is_uhyve_with_pci
• (logging) Always use format args for infoentry
• (kernel/core_local) Swap out StaticExecutor with StaticLocalExecutor
• (aarch64/start) Inline endianness instructions
• (aarch64/start) Move SCTLR_EL1 into function
• (fs) Don't fully qualify Send and Sync
• (fs) Make Send, Sync supertraits of VfsNode
• Consistently import core::ptr
• Consistently import core::slice
• Consistently import core::mem
• Consistently import core::pin::pin
• Use pointer methods instead of functions
• (drivers) Align interrupt map insertion
• (arch) Do more early returns
• (drivers) Do more early returns
• (fs) Do more early returns
• (fd) Do more early returns
• (executor) Do more early returns
• (syscalls) Do more early returns
• Do more early returns
• (mmio) Rename VirtioDriver::FileSystem to Fs
• (fs) Rename fuse.rs to virtio_fs.rs
• (virtio-fs) Change FUSE to virtio-fs in logs
• (virtio-fs) Rename VirtioFsError to VirtioFsInitError
• (virtio-fs) Rename Fuse* types to VirtioFs*
• (virtio-fs) Capitalize FUSE in comments
• (drivers) Rename fuse_handler to virtio_fs_handler
• Don't use i when not iterating over integers
• (executor/device) Deduplicate network initialization

📚 Documentation

• (pvirtq) Don't call notification structs newtypes
• (virtio) Clean up module docs
• Capitalize the first word
• Don't mention helper items
• (fs) Use active instead of imperative language
• Enable doc_cfg for docs.rs
• (README.md) More visibly link to the crate docs
• (mman) Add documentation
• Build docs for docs.rs with all features
• Rework crate documentation
• Allow documenting features
• Prepare documenting features by reordering them
• Document features

⚡ Performance

• (virtqueue) Remove unused MemPool::limit field
• (virtqueue) Replace vec-based MemPools with bitmap-based IndexAlloc
• (fs/mem) Remove Arc around file positions
• (fs/mem) Get rid of unnecessary String allocations
• (fuse) Make use of CString::new specialization
• (virtio-pci) Don't read queue size twice
• (virtio-pci) Use weaker memory barriers
• (virtq) Use weaker memory barriers
• (virtio-pci) Remove all memory barriers
• (aarch64/start) Make SCTLR_EL1 value a constant

🎨 Styling

• Use raw borrows instead of addr_of!
• (ci) Remove trailing space
• (pci) Remove non-trailing comma in cfg attributes
• (Cargo.toml) Sort dependency properties
• Consistently import core::fmt
• (syscalls) Add newline
• Remove mixed whitespaces
• (Cargo.toml) Sort default features
• (Cargo.toml) Move mmap feature to deprecated features

🧪 Testing

• (virtq) Test IndexAlloc

⚙️ Miscellaneous Tasks

• Run Firecracker before Uhyve
• Run cargo-deny
• (Cargo.toml) Replace list of authors
• Upgrade Uhyve to 0.6
• (bench) Increase alloc bench memory
• (bench) Enable QEMU's isa-debug-exit device
• (fs/mem) Remove copyright header
• Use GitHub CLI to download Firecracker
• Use virtio-console feature
• (builtins) Don't accidentally publish
• Validate lock file
• Run Clippy exhaustively
• Add matrix.flags to every qemu invocation
• Rename matrix.flags to qemu_flags
• (xtask) Increase RISC-V memory
• (xtask) Enable semihosting for RISC-V
• Enable semihosting on ARM and RISC-V
• (xtask) Add support for virtio-fs-mmio
• (bench) Increase alloc bench memory again
• Set Firecracker and Uhyve paths during installation
• Install qemu-system-arm instead of alias
• Add "consts" to typos.toml
• Download cargo-careful instead of building it
• Test Uhyve filesystem
• Don't run clippy on aarch64_be
• Simplify publish docs
• Rename publish docs workflow to deploy docs
• Deploy docs from GitHub Actions instead of from a branch
• Build docs like docs.rs would
• Improve HTML redirect
• Release Hermit 0.13.0