154599e3af
feat(kernel): derivation-tree revocation, region caps
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- caps record parent (mint/delegate/ipc), CapRef w/ pid+slot gens
- Revoke = delete subtree, keep self; drop/death re-parents children
- CreateRegion/MapRegion; mapping lives only as long as its cap
- drop Permission::Revoke + object-wide revoke
- mint any cap (badge only ep/ntfn), process caps delegable
- kani: descendants == subtree; model-based fuzz vs spec
2026-10-26 20:41:03 +01:00
76f10ff1f1
feat(kernel): seL4-style IPC, notifications, status ABI
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- badges + Mint, Call/Reply/ReplyRecv w/ gen-checked reply slot
- cap transfer (1/msg, copy, needs Delegate, rechecked at delivery)
- notifications: signal/wait/poll/bind, irq -> notification routing
- WaitAny/WaitForInterrupt removed; a0=status, ErrorCode
- libkos: single ecall primitive, compat wrappers + typed new api
- fix: trap return clobbered user t0 on every trap
- fix: wait queues FIFO, delegate keeps badge, fault cap checked
- docs/ipc.md spec, ipc tests, ipc fuzz, kani ntfn + waitqueue
2026-10-26 20:27:38 +01:00
d43421e33e
feat(kernel): object lifetimes via slot generations
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- SlotGenerations per table, never wraps, retires exhausted slots
- caps to dead/reused process, endpoint, region rejected
- endpoints owned, die w/ owner, waiters woken w/ error
- DropCap syscall + libkos wrapper
- irq table bounds-checked, routes dropped w/ thread
- self-kill terminates caller, exit_thread full cleanup
- sched run_now: switch to named thread, not queue head
- lifetime tests, fuzz kills/recreates, kani gen proofs
2026-10-26 19:54:23 +01:00
8d2c40cb1e
feat(kernel): kernel-owned memory model
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- FrameTable: per-frame owner/use, replaces PagePool + ProcessMemory
- Quota per process, page tables charged to owner
- Regions for shared mem + device MMIO, torn down w/ owner
- Platform: create/destroy AS, map/unmap, zero_frame; drop translate_va
- RequestPages/ReleasePages/MapPage(move) checked vs kernel records
- user window 0x1000..32MiB, private pts by construction
- boot loader + device setup go through kernel api
- kernel built in place, boot allocator bounded
- isolation tests, randomized invariant test, FrameTable kani proofs
- fixes: inflated release, unmapped release, dst va unchecked,
heap overflow, unbounded pt alloc, unzeroed frames, double free
2026-10-26 19:40:50 +01:00
e931485ca7
fix: sched round-robin, cap slot OOB panic, clippy, make ci
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- RunList -> intrusive FIFO, no starvation, no silent drop
- cap table sized to CapSlot range (kani caught OOB panic)
- snake food color test uses const
- kani cfg lint, RUST_MIN_STACK for big kernel struct in tests
2026-10-26 19:08:30 +01:00
1c04ddf909
style: cargo fmt kernel crates
2026-10-26 19:07:54 +01:00
73eed4e5b7
cleanup: replace magic TimeSlice::new(100) and Priority::new(16) with DEFAULT
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TimeSlice::DEFAULT and Priority::DEFAULT already exist with the
same values. Using them makes the intent clear and centralizes
the default values.
TimeSlice::new(2) in tick test is intentional — tests preemption
after 2 ticks specifically.
2026-10-18 22:41:29 +02:00
7724a5bd0a
feat: implement context switching, SavedContext with pc/status fields, wire all syscall outcomes and timer preemption
2026-10-18 02:34:36 +02:00
142505d8a4
feat: add SavedContext::with_entry_and_stack, wire SpawnThread to preserve entry point and stack
2026-10-18 01:24:56 +02:00
241fefe2d4
refactor(kernel): extract MockPlatform and test helpers into separate modules
2026-10-18 01:16:24 +02:00
