vasilito
165e3c478f
kernel: remove log crate dependency from OOM handler
2026-07-10 01:50:34 +03:00
vasilito
faa61f70fa
kernel: replace todo!(oom) with proper ENOMEM-based signal path
2026-07-10 01:07:21 +03:00
vasilito
ba2f78e12b
kernel: replace OOM panic with graceful log-and-continue
...
Previously: PfError::Oom during page fault recovery caused the
entire kernel to panic via todo!("oom"). This means a single
OOM allocation in a user process would crash the whole OS.
Now: OOM is logged as a warning, the faulting process receives
SIGSEGV (same path as other non-fatal page faults), and the
kernel continues. The process may be killed, but the system
stays up. This is consistent with how Linux handles OOM during
page fault handling: send SIGSEGV/SIGKILL, don't panic.
2026-07-10 00:45:40 +03:00
vasilito
6048df4e91
kernel: remove todo!() on NonfatalInternalError in page fault handler
...
The page fault handler for user-mode faults had a separate
arms for Segv, RecursionLimitExceeded, and NonfatalInternalError from
try_correcting_page_tables. The first two fell through to return
Segv to the process; NonfatalInternalError called todo!() which
causes a kernel panic. This is a kernel-level crash triggered by
a userspace page table correction attempt that reports an internal
(non-fatal) error.
Fix: collapse NonfatalInternalError into the same fall-through arm
as Segv and RecursionLimitExceeded. The error name says 'nonfatal'
— it should not crash the kernel. The userspace process receives
a segmentation fault signal instead.
2026-07-09 20:39:47 +03:00
vasilito
ca67b1da37
0.3.0: converge kernel onto upstream master
...
- Rebase all Red Bear kernel changes onto upstream master (4d5d36d4
2026-07-06 18:43:52 +03:00
40e76875d7
Prevent kstack from leaking
2026-05-20 13:35:47 +07:00
f49c7d991a
RSDP validation and fixing a few clippy lints
2026-05-05 19:35:31 +02:00
654ee6ca3e
size_of and align_of are part of the prelude nowadays
2026-04-09 15:23:34 -06:00
2fba663274
Fix expect message
2026-04-04 13:14:14 +02:00
50c68cd746
Remove ACPI search from the kernel
...
The bootloader provides the RSDP address to the kernel. If the
bootloader can't find it, there is no RSDP.
2026-04-04 11:50:24 +02:00
ab4abf63c9
Deduplicate Page and other paging related things between architectures
2026-04-03 22:15:00 +02:00
c8879531ae
rmm: Add device_memory and uncachable flags to PageFlags
2026-03-30 20:34:45 +02:00
c4b064ea44
Move arch specific EntryFlags into rmm
2026-03-30 18:49:15 +02:00
c51aa1ef86
rmm: Make a couple of methods safe
2026-03-29 14:16:53 +02:00
b5603422be
Check at compile time that KernelMapper is writable if necessary
2026-03-28 23:22:19 +01:00
df469ddcb3
apply is_multiple_of lint
2026-02-21 08:39:26 +00:00
33dbf2458e
only clear RC_USED_NOT_FREE with freelist locked
2025-11-14 20:06:18 +01:00
96552163f6
Clear RC_USED_NOT_FREE even for contention case.
2025-11-14 20:06:18 +01:00
dc33c67997
Fix potential refcount underflow from fetch_sub.
2025-11-14 20:06:18 +01:00
91b835d29f
Reduce logging significantly
2025-11-01 20:24:11 -06:00
e101629377
Inline a bunch of functions in KernelMapper
2025-10-26 12:44:52 -06:00
4b89feab41
Fix a couple of dead code warnings
2025-10-26 12:07:56 +01:00
0931a7f49f
Resolve a huge portion of the clippy lints
2025-10-06 06:30:23 -06:00
5dc6f7c3ba
lock ordering
2025-09-22 07:48:48 -06:00
f58bcd584e
Separate logical and hardware cpu ids
2025-09-20 15:33:08 +02:00
5a6117b5ae
Replace the log crate with a custom logging system
...
This avoids the need to explicitly set a logger early during boot, which
reduces the amount of moving parts that could go wrong slightly. And it
cuts the kernel image size by 13kb.
2025-09-13 18:55:16 +02:00
cea93f7647
cargo fix --edition & rustfmt
...
Or to be precise:
RUST_TARGET_PATH=$(pwd)/targets cargo fix --edition \
--target targets/x86_64-unknown-kernel.json \
--target targets/i686-unknown-kernel.json \
--target targets/aarch64-unknown-kernel.json \
--target targets/riscv64-unknown-kernel.json \
-Zbuild-std=core,alloc --allow-dirty --bin kernel
cargo fmt
2025-09-10 16:44:36 +02:00
08231eb4df
feat(mremap): KEEP_OLD
...
Signed-off-by: Anhad Singh <andypython@protonmail.com >
Co-authored-by: @4lDO2
2024-12-11 16:08:08 +11:00
4db9673e2a
Support SPCR and clean up device memory allocation
2024-10-31 10:53:58 -06:00
0a6a90415a
Refactor initial memory paging
2024-10-19 08:44:46 +03:00
fc5d246b30
remove wrapper functions
2024-09-26 22:34:55 +00:00
755694494b
Factor KernelMapper out of arch
...
Same implementation on all the platforms. Also remove mutable Deref as it allowed circumventing RO check
2024-09-25 21:51:39 +03:00
ba154c0387
Fix a debug-build assertion
...
A range of usable memory could be small enough not to have any MAX_ORDER sized frames.
2024-09-04 10:55:11 +03:00
d94baa2712
Run rustfmt.
2024-07-15 17:50:18 +02:00
5e7db80285
Fix a bunch of warnings.
2024-07-15 17:48:45 +02:00
9b68d4de80
Fix add_ref(Shared) refcounting bug.
2024-07-15 17:20:55 +02:00
295cc820e6
WIP: userspace signal handling
2024-07-15 17:20:55 +02:00
9c639af217
Fix debug assertion bug
2024-07-12 23:15:33 +03:00
2f1551a6bb
Mark allocated p2frame used *before* freelist unlock.
2024-03-26 17:07:37 +01:00
b5523df187
Only support power-of-two frame allocations.
2024-03-24 14:40:15 +01:00
b2d52d6736
Implement allocator free/used bookkeeping.
2024-03-24 14:27:25 +01:00
12282439b6
Reduce dead code, fix aarch64.
2024-03-23 23:51:12 +01:00
7261dccb72
Fix i686.
2024-03-23 16:54:47 +01:00
299a829ff3
Remove debug code.
2024-03-22 17:21:17 +01:00
676368f5d2
Fix booting to desktop.
2024-03-22 16:35:29 +01:00
c0f3b6ccca
Fix refcount assert
2024-03-22 13:32:14 +01:00
660acb4d94
Improve debugging
2024-03-22 13:32:14 +01:00
343f89f240
Fix unaligned section end append_pages.
2024-03-22 13:32:14 +01:00
baf46a3555
Far more progress
2024-03-22 13:32:13 +01:00
f4d270c7ce
Ensure freelist does not contain used pages.
2024-03-22 13:31:24 +01:00
vasilito
Wildan M