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
9fce114e8e
Kernel: Don't clone entire kernel stack on fork
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We only need to copy area between [ret_sp, stack_end]. This range is
always very small compared to the whole stack (64 KiB).
2026-04-04 23:48:43 +03:00
f1369c8fd6
Kernel/LibC: Implement mprotect
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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
6084aae603
Kernel: Add guard pages to kernel and userspace stacks
2025-07-02 23:12:36 +03:00
00015285ab
Kernel: Add vaddr->paddr getter to VirtualRange
2025-04-15 21:25:15 +03:00
96c7e9e29d
Kernel: Cleanup VirtualRange code
...
Virtual range does not need to look into the page table for mapped
physcial pages. It can (and should) just keep track of them itself.
2024-07-21 17:35:07 +03:00
6d59a2b45d
Kernel: Remove VirtualRanges created in kmalloc memory
...
These were only used as stacks of kernel threads, but they can just
as well be allocated as full pages from Heap
2024-02-28 13:19:18 +02:00
dfe5a2d665
All: Cleanup all files
...
Add newline to end of files and remove whitespace from end of lines
2024-01-24 15:53:38 +02:00
245f58cc3a
Kernel: mmap regions are now demand paged
...
mmap will not actually take any memory unless you use the given
memory.
2023-09-28 21:07:14 +03:00
e7ca83ecb2
Kernel: VirtualRange doesn't store physical addresses of pages
...
This was unnecessarry allocation, since the page table allready
contains virtual address -> physical address mappings.
2023-09-24 01:29:34 +03:00
6fcb191ca0
Kernel: Add PageTable::Flags::CacheDisable
...
Also fix multiple places where we were using uint8_t as page table
flags instead of PageTable::flags_t which we promoted to uint16_t
while back.
2023-08-06 23:59:30 +03:00
3139391e06
Kernel: Change PageTable API
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Getting free pages not reserves them, so you don't have to hold
the page table lock :)
2023-08-02 22:09:14 +03:00
5d2bfc858e
Kernel: SYS_FORK can now fail instead of panicing on error
2023-07-19 17:47:12 +03:00
801025ad7b
Kernel: Big commit. Rewrite ELF loading code
...
We now load ELF files to VirtualRanges instead of using kmalloc.
We have only a fixed 1 MiB kmalloc for big allocations and this
allows loading files even when they don't fit in there.
This caused me to rewrite the whole ELF loading process since the
loaded ELF is not in memory mapped by every process.
Virtual ranges allow you to zero out the memory and to copy into
them from arbitary byte buffers.
2023-06-09 00:37:43 +03:00
5bb1f2a48c
Kernel: Rename MMU to PageTable
...
This is more descriptive name for what it actually represents
2023-05-29 21:06:09 +03:00
15842db83e
Kernel: Move PhysicalRange to its own file and add VirtualRange
2023-05-28 17:48:34 +03:00
