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1674 Commits

Author SHA1 Message Date
Bananymous 3aa20a3a32 Kernel: Fix ACPI _GPE calling 
This adds patch adds support for extended GPEs and the second GPE
register block.
 2025-08-07 19:35:13 +03:00
Bananymous de7c3d3d29 Kernel: Don't try to create . in USTAR 
Our build system adds . entry to the tar archive and it should be
handled as an no-op
 2025-08-07 19:35:13 +03:00
Bananymous 3f89df338e IDT: Remove stack OOB check 
This makes debugging easier when you can see the actual register values
and what is mapped and where
 2025-08-07 19:35:13 +03:00
Bananymous 7ad3f967db Kernel: Don't stop audio processing after each entry in AC97 2025-08-07 16:43:05 +03:00
Bananymous d1c814cf9d Kernel: Optimize consecutive absolute mouse move events 
This is a hack to make window server usable without kvm :D
 2025-08-07 16:43:05 +03:00
Bananymous 72f85dce2b Kernel: Make userspace stack on-demand allocated 
Also bump the hardlimit of stack size from 512 KiB->32 MiB. This still
feels quite low but is much better than before :D
 2025-08-07 16:43:05 +03:00
Bananymous f5bbcc017c Kernel: Only send one smp message when reserving a range 
This was causing some kernel panic because processors ran out of smp
message storage when reserving large areas.

Also most of the time there is no need to actually send the SMP message.
If process is mapping something to just its own address space, there is
no need for a TLB shootdown. Maybe this should be only limited to kernel
memory and threads across the same process. I'm not sure what the best
approach here and it is better to send too many invalidations that too
few!
 2025-08-07 16:43:05 +03:00
Bananymous 647fedfa19 Kernel: Add missing multiboot.h 2025-08-05 17:12:26 +03:00
Bananymous f27823babe Kernel: Move stacks to the top of userspace address space 2025-08-05 03:09:24 +03:00
Bananymous 95cfac471a Kernel: Rename loopback adapter lo0 -> lo 2025-08-05 03:09:24 +03:00
Bananymous f7c1084c3e Kernel: Expose boot command line in /proc/cmdline 2025-08-05 03:09:24 +03:00
Bananymous cf96bb6cc3 Kernel: Add support for multiboot 
I don't know why I did it but it works now :D
 2025-08-05 03:09:24 +03:00
Bananymous f1369c8fd6 Kernel/LibC: Implement mprotect 
There may be some race conditions with this but i think this is good
enough to start with
 2025-08-05 03:09:24 +03:00
Bananymous dfdfb7cdaf Kernel: check all threads in validate_pointer_access 2025-08-05 03:09:24 +03:00
Bananymous 1cc0fb9c01 Kernel: Reschedule if idle after IPI 
This allows starting thread execution right after thread is received
from load balancing
 2025-08-05 03:09:24 +03:00
Bananymous a51b589bc9 Kernel: Allow any signal flags and support SA_RESETHAND 2025-08-05 03:09:24 +03:00
Bananymous 5940e912b3 Kernel/LibC: Implement simple futex 2025-08-05 03:09:24 +03:00
Bananymous 284c9e5f61 Kernel: Don't kill process if stack pointer is OOB 
This can be valid if process is using green threads or for some other
reason using its own stack
 2025-08-05 03:09:24 +03:00
Bananymous 927fbda1e8 Kernel: Make on-demand paging thread safe 2025-08-05 03:09:24 +03:00
Bananymous d8a695a88d Kernel: Don't fail ustar unpack when creation fails 2025-08-05 03:09:24 +03:00
Bananymous 8c29036fbf Kernel: Fix EAGAIN on hungup pipe 2025-07-31 22:47:40 +03:00
Bananymous cc04bd0f06 LibC/Kernel: Implement ttyname_r 2025-07-31 22:47:40 +03:00
Bananymous e72e1e4e43 LibC: Add _SC_NPROCESSORS_{CONF,ONLN) 2025-07-31 22:47:40 +03:00
Bananymous 9b18bda9c8 Kernel: Make epoll always check for HUP and ERR 2025-07-31 22:47:29 +03:00
Bananymous 2c65590134 Kernel: Add support for absolute position mouse 2025-07-19 18:00:39 +03:00
Bananymous a0d1a9ad67 Kernel: Fix PIT::prescheduler_sleep_ns 
I don't even know what I was doing here :D
 2025-07-19 01:25:46 +03:00
Bananymous 5df6270e32 Kernel: Clobber flags in `rdrand` 2025-07-18 19:36:37 +03:00
Bananymous 7af6e1cd34 Kernel: Ignore HID main item tag 0 
This for some reason exists in vmware's usb devices
 2025-07-18 19:11:12 +03:00
Bananymous cceb066284 Kernel: Don't use IST on 32 bit target 
This only exists in 64 bit
 2025-07-18 19:10:48 +03:00
Bananymous 7a054787ca Kernel: Don't print error if `root` is empty 
This is used when loading filesystem from initrd
 2025-07-18 19:09:43 +03:00
Bananymous d27891c79f Kernel: Fix correct IOAPIC lookup based on gsi 2025-07-18 19:09:20 +03:00
Bananymous 5874fd640e Kernel: Fix TmpFS for 32 bit target 
There was a problem when sizeof(size_t) != sizeof(PageInfo)
 2025-07-18 19:07:32 +03:00
Bananymous e16fb6a8e9 Kernel: Don't validate allowed null pointers on syscalls 2025-07-17 22:14:04 +03:00
Bananymous d5301508ec Kernel: Increase kernel thread stack size 
HACK HACK HACK

This is just to make banan-os boot on one razer laptop where AML
triggers a stack overflow :)
 2025-07-17 21:21:14 +03:00
Bananymous 793cca423b Kernel: Fix system timer disabling 
I was actually not disabling system timer (HPET, PIT) when using lapic
timers for scheduling. This made BSB get too many timer interrupts :D
 2025-07-16 20:02:04 +03:00
Bananymous 3960687f9d Kernel: Parse PCIConfig opregion address on read/write 
I was testing on some hardware and _ADR does not have to exist in the
namespace when opregion is parsed :)
 2025-07-16 15:34:36 +03:00
Bananymous 3ec7aad432 Kernel: Increase PS/2 timeout and detect more keyboards 
I was testing on a old T61
 2025-07-16 15:29:27 +03:00
Bananymous 8a663cb94f Kernel: Implement basic AC97 driver 2025-07-15 14:17:49 +03:00
Bananymous 674e194a91 Kernel: Don't fail PCI interrupt allocation with PCIe and no PCI 2025-07-15 14:17:49 +03:00
Bananymous c57f0abb56 BuildSystem: Order source list alphabetically 2025-07-15 14:17:49 +03:00
Bananymous 995dfa1455 Kernel: Fix AML PCIConfig OpRegion accesses 
Apparently I'm not supposted to calculate device/function from the
offset, but parse them from the acpi namespace :)

This allows PCI PIN interrupt routing actually work
 2025-07-04 13:21:02 +03:00
Bananymous 544c8dbc13 Kernel: Optimize AML interpreter stack usage 
There is a very hacky no-inline hack that I am not proud of but it drops
the stack usage of few functions A LOT.

Previously Virtual Box could not boot with our 8 page stack, but these
changes allow it to boot on 5!
 2025-07-03 00:49:23 +03:00
Bananymous 8da4f80453 Kernel: Add custom stack to double fault handler 
This prevents triple faults!
 2025-07-02 23:14:52 +03:00
Bananymous 6084aae603 Kernel: Add guard pages to kernel and userspace stacks 2025-07-02 23:12:36 +03:00
Bananymous e1319a06f2 Kernel: Remove accidentally commited debug prints 2025-07-02 23:09:57 +03:00
Bananymous 51fd7a607d Kernel: Fix IDE controller waiting 
We did not correctly wait until controller is ready to receive data on
write command. Also remove possible kernel panic if controller sends
unexpected interrupts
 2025-07-02 22:04:41 +03:00
Bananymous 8a0269d29e Kernel: Remove kernel processes 
Kernel can just use raw threads, pretty muchs the only thing that
process provides is syscalls which kernel threads of course don't
need.

Also this makes init process have pid 1 :D
 2025-07-02 01:54:03 +03:00
Bananymous 892e16dfb1 Kernel: Increase PS2 timeout to 300 ms, load PS2 in separate thread 
PS/2 seems to hit command timeout sometimes on slow emulation so
increase the timeouts.

Also move PS/2 device initialization to a different thread because
device indentification waits for timeouts.
 2025-07-02 00:17:42 +03:00
Bananymous 92e4078287 Kernel: Rewrite ThreadBlocker 
This gets rid of a very old bug where kernel panics when thread is being
woken up and unblocked at the same time on different cores. This
required adding a new lock to SchedulerQueue::Node and adding a cap to
how many threads a threadblocker can simultaneously block. I don't think
I ever block more than five threads on the same ThreadBlocker so this
should be fine.
 2025-07-02 00:17:42 +03:00
Bananymous 41e1819072 Kernel: Align argv and envp to pointer boundary 
This bug was found with ubsan
 2025-07-02 00:17:42 +03:00