Commit Graph

3629 Commits

Author SHA1 Message Date
eba97c1fc7 Kernel: Avoid possible dead lock while sending smp messages
Process own events while waiting for space on another processor. This
fixes a dead lock when processors are sending messages to each other
2026-05-06 00:09:05 +03:00
47650980f2 LibC: Reorder stack trace dump printing
If we fault while getting start of stack frame at least we now print
that we were trying to get the stack trace :^)
2026-05-05 13:54:51 +03:00
4b12770485 LibC: Don't leak FILEs on failed shebang exec 2026-05-05 13:52:52 +03:00
ba106f6bf5 LibC: Update argv[0] for shebang scripts to full path
This is needed so `dirname -- "$0"` works with shebang scripts found in
PATH
2026-05-05 12:48:04 +03:00
3a05a29294 dirname: Support options and multiple strings
This is not needed by POSIX but sdl2-config uses `dirname -- "$0"`
2026-05-05 01:42:28 +03:00
efeaafaff6 Kernel: Cleanup E1000 link speed code 2026-05-04 21:23:04 +03:00
6966475dcf Kernel: Make E1000 sending lockless and mostly non-blocking
Now we only block if all 256 tx descriptors are waiting to be sent. This
removes TCP acks from taking 30% of profiles while DOWNLOADING files
2026-05-04 21:15:15 +03:00
dfe24b69e0 Kernel: Don't keep devfs locked while performing disk sync 2026-05-04 20:26:02 +03:00
93e1091252 Kernel: Rewrite kmalloc
Kmalloc is now a bitmap allocator with dynamic resizing and we dont need
to allocate 64 MiB static block of memory reserved for kmalloc :^)
2026-05-04 20:26:02 +03:00
f293377e31 Kernel: Dynamically allocate PCI devices
There was no need to prealloce almost a 5 MiB buffer for PCI all
possible pci devies :D
2026-05-04 20:26:02 +03:00
f4e2e62d04 Kernel: Remove kmalloc API for identity mapped results
This is no longer used. This finally allows me to rewrite kmalloc :^)
2026-05-04 20:26:02 +03:00
d42b363fb1 Kernel: Remove kmalloc identity map requirement from USB keyboard
This is the last place requiring kmalloc identity mapping
2026-05-04 20:26:02 +03:00
8773e80917 Kernel: Remove kmalloc identity map requirement from XHCI device init 2026-05-04 20:26:02 +03:00
0c6d713c4a Kernel: Rewrite 32 bit paging to not depend on kmalloc
There are a lot of 'unnecessary' fast page mappings but at least this
works.
2026-05-04 20:26:02 +03:00
8091127150 Kernel: Add page table api to map multiple fast pages
This is not currently used, but can be handy in the future
2026-05-04 20:26:02 +03:00
b8dc199738 Kernel: Fix ByteRingBuffer->back() 2026-05-04 20:26:02 +03:00
74127c0f45 Kernel: Cleanup inline assembly accessing cpu specific data 2026-05-04 20:26:02 +03:00
28499b890c LibC: Mark exit as noreturn 2026-05-04 20:26:02 +03:00
2f45349658 Kernel: Calculate internet checksum in host endian
No need to swap bytes of every 16 bit word in the packet, we can just do
one swap at the return
2026-05-04 20:26:02 +03:00
fde085e04b Kernel: Pass current cpu index as a GDT limit
I had no idea LSL was an instruction. This cleans up code to get the
current cpu by a lot and does not require extra segment usage :D
2026-05-04 20:26:02 +03:00
77ca525552 BAN: Fix HashSet 2026-05-04 20:26:02 +03:00
3b83daef17 Kernel: Use empty string instead of nullptr for non existing proc name 2026-05-04 20:26:01 +03:00
f37d9dbdb1 Kernel: Remove kmalloc_vaddr_of
This is no longer needed. It was only used for x86_64 paging and AP
stack initialization
2026-05-04 20:26:01 +03:00
b7cedad891 Kernel: Wrap syscall macro value in paranthesis 2026-05-04 20:26:01 +03:00
cdf0de34fb Kernel: Stop stacktrace dump on null bp
This makes stack traces not crash before IDT is initialized
2026-05-04 20:26:01 +03:00
03fccdffe1 Kernel: Rewrite paging and AP initialization
Initial step of paging now just prepares fast page for heap, actual page
table initialization happens after heap is initialized which allows
x86_64 to never depend on kmalloc for pages.

Processor's stacks are now also spawned with PMM/VMM allocated stacks
instead of kmalloc identity mapped.
2026-05-04 20:26:01 +03:00
1602b195c5 ports: Rework ssl certificates
ca-certificates:
 - update to 2026.03.19
 - install to /etc/cacert
 - extract individual ceritificates from the bundle

openssl:
 - depend on ca-certificates
 - install hashed symlinks to individual certs

curl:
 - don't depend on ca-certificates; openssl handles this
 - set both ca-bundle and ca-path
2026-04-28 02:23:46 +03:00
1486ad7aa5 Kernel: Don't map NIC buffers as uncached
There is no need for them to be uncached. Having them as uncached killed
the networking performance, over 90% time was spent in kernel out of
which 80% was in checksum calculation and memcpy, half each (measured in
qemu with e1000e)
2026-04-27 19:45:16 +03:00
ab8bcbec3e Kernel: Allow mapping dma regions as not uncached 2026-04-27 19:36:32 +03:00
0e00b72df6 BAN: Cleanup HashMap
Add a concept for HashMapFindable instead of manually specifying the
requries expression everywhere.

Allow HashMapFindable also for `remove`, `contains`, `operator[]`, `at`

Make Entry have a const Key. This allows iterator's operator* and
operator-> return values have const keys.
2026-04-25 22:10:01 +03:00
a63818ec33 BAN: Cleanup HashSet
Add a concept for HashSetFindable instead of manually specifying the
requries expression everywhere.

Allow HashSetFindable also for `remove` and `contains`.

Remove non-const return values from iterator; you should never modify
the hashed value in place.

Don't require key to be move assignable, move construction is enough.
2026-04-25 22:10:01 +03:00
cf2e8ffaff Kernel: Remove unnecessary custom RefPtr hashes
RefPtr now exposes its own default hash
2026-04-25 22:10:01 +03:00
b5647ff258 BAN: Rewrite RefPtr,UniqPtr const semantics
const RefPtr<T> now allows accessing T as non-const. Also add default
hash function for RefPtr and UniqPtr based on the pointer value
2026-04-25 22:10:01 +03:00
bef53c726b Userspace: Install libdl, libm, libpthread as symlinks to libc
Having dummy libraries was just unnecessary
2026-04-21 21:46:00 +03:00
6b43cadf3a Kernel: Implement stack trace dump with safe memcpy
This fixes kernel panic if the stack trace cannot be read. Manually
validating pointers is definitely not safe
2026-04-21 21:20:52 +03:00
b74812d669 Kernel: Remove unnused features from VirtualRange
On-demand paging has not been used ever since I made userspace stack be
a normal MemoryRegion.
2026-04-21 19:58:09 +03:00
eea0154f18 LibC: Cleanup RNG and properly initialize to srand(1) at startup 2026-04-21 00:26:41 +03:00
ea4c34fc0b LibC: Fix printf thread safety
I don't know why I was using a static buffer for value conversions :D
2026-04-21 00:25:56 +03:00
558ed8fd44 LibC: Define pthread_{equal,self} as macros
These really should get inlined :D
2026-04-21 00:25:16 +03:00
8665195350 Kernel: Allow main thread to call pthread_exit
Apparently this is allowed. Also when last thread calls pthread_join
the process should also exit
2026-04-21 00:23:35 +03:00
72a24a0d38 Kernel: Reorder FUTEX_WAIT value and timeout check
Return EAGAIN rather than ETIMEDOUT if value does not match at futex
entry
2026-04-21 00:20:37 +03:00
0ee50032f3 Kernel: Fix 32 bit signal trapoline offset 2026-04-21 00:19:33 +03:00
40f3546aca BAN: Rewrite HashMap as a wrapper around HashSet
There is really no need to have two implementation of the same thing.
Only difference now is that HashMap's value type has to be movable but
this wasn't an issue
2026-04-21 00:18:18 +03:00
a8e496310b Kernel: Use HashMap for fd->epoll_event mapping
I don't know why it was a static array :D
2026-04-21 00:14:24 +03:00
fe613e4274 BAN: Rewrite HashSet
Instead of representing the map as vector or linked lists which required
an allocation for every insertion and deallocation for removal, we now
store a single big contiguous block of memory and use hash chains to
handle collisions. This intuitively feels much better although I did not
run any benchmarks.
2026-04-21 00:14:24 +03:00
3264dcee44 BAN: Add Math::round_up_to_power_of_two 2026-04-21 00:14:24 +03:00
71649ffe09 Kernel Rework ThreadBlocker
I don't know why I though the block chain had to be stored fully in the
ThreadBlocker, that did not even fix the problem I was trying to fix
when I last rewrote it. Roll back to doubly linked list of block chain
and now just check that the node is contained within the ThreadBlocker
before removing and after acquiring the ThreadBlocker's lock. Also there
is no need to have a separate lock the node's blocker field. We can just
perform an atomic reads and writes to it. We can still get a blocker
that the node is no longer part of, but this can be resolved with a
simple check. This patch reduces ThreadBlocker's size from over 200
bytes to just 12 bytes +4 bytes padding
2026-04-20 12:50:09 +03:00
5b7b2d7ac3 Kernel: Fix memory leak when cleaning up inodes shared page cache 2026-04-19 17:52:21 +03:00
8e543195b1 Kernel: Check for null in pthread_join 2026-04-19 17:52:21 +03:00
a24ec0da2b LibC: Don't complain about stack size until 8192 bytes
It was unnecessary as userspace stack is way bigger than that...
2026-04-19 17:52:21 +03:00