e73a5c41ce
sched: fix thread_awaken manipulating a runqueue without locking it
2026-03-14 22:23:07 +00:00
89dac0c951
sched: add a thread flag to indicate when a thread is scheduled on a runqueue
...
this prevents runqueue corruption that can occur if rq_enqueue is called on
a thread that's already on a runqueue.
2026-03-14 22:22:05 +00:00
7c630ece54
sched: add wait begin/end functions that don't change thread state
...
these functions can be used when waiting on multiple queues at once, to prevent
the thread state from being changed unexpectedly while initialising a set of wait items.
2026-03-14 22:20:10 +00:00
72145257de
x86_64: generate a seed for the RNG with RDRAND when available
2026-03-14 22:18:47 +00:00
d2203d9a65
kernel: replace random number generator with mersenne twister
2026-03-14 22:16:56 +00:00
5e7a467dff
kernel: printk: fix log buffer overflow
2026-03-14 22:16:01 +00:00
c628390f4a
vm: replace vm-region with address-space
...
address-space is a non-recursive data structure, which contains a flat list of vm_areas representing
mapped vm-objects.
userspace programs can no longer create sub-address-spaces. instead, they can reserve portions of
the address space, and use that reserved space to create mappings.
2026-03-13 19:44:50 +00:00
c6b0bee827
kernel: wire dispatcher for kern_object_wait
2026-03-12 20:43:21 +00:00
f67d3a0cb9
libmango: update syscall definitions
2026-03-12 20:42:50 +00:00
6ba236b2fe
kernel: resolving a handle now increments the refcount of the corresponding object
2026-03-12 20:42:05 +00:00
5a37b5e148
kernel: handle: handle_table_transfer now ignores items with KERN_HANDLE_INVALID
2026-03-12 20:41:01 +00:00
2fb8f556b4
kernel: implement a generic object signalling system
2026-03-12 20:40:23 +00:00
921c91c02a
vm: add vm-controller object
2026-03-12 20:39:28 +00:00
3fd608b623
kernel: add equeue object
...
equeue is a way for the kernel to deliver events to userspace programs.
2026-03-12 20:37:51 +00:00
7d4cede788
misc: adjust formatting
2026-03-12 20:34:31 +00:00
3f21e888d6
sched: split sched.h into separate header files
2026-03-12 20:30:36 +00:00
de520cdd2d
libmango: types: add macro to define a kern_msg_handle_t
2026-03-10 19:08:49 +00:00
e84ed6057d
channel: fix incorrect offset used in channel_write_msg
2026-03-10 19:08:20 +00:00
1d4cb882a8
libmango: types: add ssize_t definition
2026-03-06 20:12:32 +00:00
18b281debf
kernel: bsp: add support for static bootstrap executables
2026-03-06 20:12:12 +00:00
09d292fd09
kernel: msg: include details about who sent a message
2026-03-05 21:04:02 +00:00
36c5ac7837
kernel: re-implement sending handles via port messages
2026-03-01 19:10:01 +00:00
b1bdb89ca4
vm: region: add a function to write data from a kernel buffer to a vm-region
2026-03-01 19:09:30 +00:00
f8a7a4285f
syscall: msg: validate iovec array itself as well as the buffers it points to
2026-02-26 20:55:17 +00:00
f9bf4c618a
syscall: log: add task id to log output
2026-02-26 20:54:14 +00:00
e4de3af00d
kernel: remove support for sending kernel handles via port/channel
2026-02-26 20:53:47 +00:00
b59d0d8948
syscall: msg: locking of vm-region is now handled by channel_read_msg
2026-02-26 19:43:07 +00:00
8cc877c251
kernel: port: dequeue kmsg struct once reply is received
2026-02-26 19:42:29 +00:00
2073cad97b
kernel: fix channel locking and status update issues
2026-02-26 19:42:12 +00:00
eb8758bc5e
vm: region: fix some cases where regions weren't being unlocked after use.
2026-02-26 19:41:40 +00:00
1cdde0d32e
kernel: add functions for safely (un)locking pairs of objects
...
when locking a pair of objects, the object with the lesser memory address
is always locked first. the pair is unlocked in the opposite order.
2026-02-26 19:38:49 +00:00
1c7c90ef39
kernel: channel: implement channel_read_msg and msg_read
2026-02-23 21:52:03 +00:00
11c741bd68
libmango: add nr_read output param to msg_read
2026-02-23 21:51:26 +00:00
34bd6e479c
vm: region: add nr_bytes_moved output param to memmove_v
2026-02-23 21:50:35 +00:00
5f0654430d
syscall: add task_self, task_get_address_space, and vm_region_kill
2026-02-23 18:43:49 +00:00
fd1bc0ad5f
kernel: check object refcount before performing a recursive deletion
2026-02-23 18:43:11 +00:00
b1ffdcf2bc
vm: region: improve locking rules and semantics; implement region killing
...
the rules around acquiring locks have been strictly defined and
implemented, and general lock usage has been improved, to fix and
prevent several different issues.
a vm-region is now destroyed in two separate steps:
1. it is "killed": all mappings are unmapped and deleted, the
region is removed from its parent, and the region and all of
its sub-regions are marked as "dead", preventing any
further actions from being performed with the region.
2. it is "destroyed": the vm-region object is de-allocated when
the last reference/handle is closed. the references that this
region holds to any sub-regions are also released, meaning
these regions may also be de-allocated too.
2026-02-23 18:42:47 +00:00
5690dd5b9c
kernel: add support for recursive object destruction (without recursion)
...
this system makes it possible for an object that forms part of a tree
to be safely recursively destroyed without using recursion.
2026-02-23 18:34:12 +00:00
37ae7aeef7
kernel: implement globally-unique object ids
2026-02-23 18:32:11 +00:00
dbe117135b
x86_64: implement proper user/kernel %gs base switching
...
the %gs base address is now always set to the current cpu block while
in kernel-mode, and is switched back to the userspace %gs base
when returning to user-mode.
2026-02-23 18:26:21 +00:00
273557fa9f
x86_64: lock task address space while performing a demand page-map
2026-02-23 18:25:49 +00:00
fe107fbad3
kernel: locks: add spin lock/unlock function that don't change interrupt state
2026-02-23 18:24:49 +00:00
b2d04c5983
vm: object: zero-initialise pages allocated for vm-object
2026-02-21 23:19:49 +00:00
6c2ca888ee
x86_64: remove kernel image post-build ELF32 patch
...
this patch must now be done by the wider OS build system, to avoid
interference with any bootloaders that don't support this kind of
patching (e.g GRUB i386-pc)
2026-02-21 23:18:22 +00:00
044b3688aa
vm: cache: all allocations are now zero-initialised
2026-02-21 23:18:09 +00:00
77936e3511
kernel: implement sending, receiving, and replying to message via port/channel
2026-02-21 11:32:57 +00:00
08c78bd6e7
vm: object: add vm_object_copy syscall trace output
2026-02-21 11:30:44 +00:00
2537ca46de
libmango: add macros for easily defining msg and iovec variables
2026-02-21 11:29:25 +00:00
3190035086
libmango: add temporary formatted log function
2026-02-21 11:28:58 +00:00
7f049293f4
vm: memblock: add memblock_dump to header
2026-02-21 11:27:28 +00:00
