userspace: introduce coconut-alloc as allocator#927

Draft

n-ramacciotti wants to merge 17 commits into

coconut-svsm:mainfrom

n-ramacciotti:feature/userspace_allocator

Commits on Jan 22, 2026

syscall: Add MMAP/MUNMAP/MRESIZE system call wrappers

joergroedel
authored and
n-ramacciotti
committed
kernel/mm: Add conversion from MMFlags to VMFileMappingFlags

joergroedel
authored and
n-ramacciotti
committed
kernel/fs: Get Handles from struct FsObj

joergroedel
authored and
n-ramacciotti
committed
kernel/syscall: Provide MMAP system call

joergroedel
authored and
n-ramacciotti
committed
kernel/syscall: Provide MUNMAP system call

joergroedel
authored and
n-ramacciotti
committed
kernel/mm: Add resize() and flush() methods to trait VirtualMapping

joergroedel
authored and
n-ramacciotti
committed
kernel/mm: Make VMR::map/unmap_vmm() methods more generic

joergroedel
authored and
n-ramacciotti
committed
kernel/mm: Move VMR TLB flush logic to helper function

joergroedel
authored and
n-ramacciotti
committed
kernel/mm: Implement VMM resize operation

joergroedel
authored and
n-ramacciotti
committed
kernel/mm: Implement resize support for struct VMalloc

joergroedel
authored and
n-ramacciotti
committed
[hack] kernel/task: Change console to obj handle 1
n-ramacciotti
committed
user/lib: Introduce coconut-alloc in userlib
n-ramacciotti
committed
user/lib: Introduce AllocBlock from coconut-alloc
n-ramacciotti
committed
user/lib: Implement GlobalAlloc trait to use the alloc crate
n-ramacciotti
committed
user/lib: Implement utilities to extract Layout from size or pointer
n-ramacciotti
committed
user/lib: Add allocator unit tests
n-ramacciotti
committed
user/init: Add heap allocation example using alloc crate
n-ramacciotti
committed

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userspace: introduce coconut-alloc as allocator#927

userspace: introduce coconut-alloc as allocator#927
n-ramacciotti wants to merge 17 commits into
coconut-svsm:mainfrom
n-ramacciotti:feature/userspace_allocator

Commits on Jan 22, 2026

syscall: Add MMAP/MUNMAP/MRESIZE system call wrappers

kernel/mm: Add conversion from MMFlags to VMFileMappingFlags

kernel/fs: Get Handles from struct FsObj

kernel/syscall: Provide MMAP system call

kernel/syscall: Provide MUNMAP system call

kernel/mm: Add resize() and flush() methods to trait VirtualMapping

kernel/mm: Make VMR::map/unmap_vmm() methods more generic

kernel/mm: Move VMR TLB flush logic to helper function

kernel/mm: Implement VMM resize operation

kernel/mm: Implement resize support for struct VMalloc

[hack] kernel/task: Change console to obj handle 1

user/lib: Introduce coconut-alloc in userlib

user/lib: Introduce AllocBlock from coconut-alloc

user/lib: Implement GlobalAlloc trait to use the alloc crate

user/lib: Implement utilities to extract Layout from size or pointer

user/lib: Add allocator unit tests

user/init: Add heap allocation example using alloc crate