5e564e9ae3
kernel: Move Thread::self_directory to UserVM
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Since this is only used by user threads, UserVM is a convenient/related place to store the PageDirectory in a RAII manner.
2023-07-09 20:32:42 +02:00
3d157b760c
kernel: Make the stack and loaded program code regions persistent
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continuous-integration/drone/push Build is passing
This way, they can't be modified by mmap() or munmap().
2023-06-19 12:44:49 +02:00
67ed18629d
kernel: Update the VM allocator for userspace to use a linked list
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continuous-integration/drone/push Build is passing
This can cover the entire address space at once in a more memory-efficient way.
Stress-tested using 'base64 /bin/ls' which allocates enough contiguous
virtual memory to store the entirety of /bin/ls :)
A couple of bugs and fixes later, here we are!
2023-06-18 01:48:48 +02:00
54f2d35416
kernel: Add the fork() system call
2023-03-18 23:45:48 +01:00
08c888eaae
kernel+libc: Remove (de)allocate_memory and replace it with POSIX mmap
continuous-integration/drone/push Build is passing
2023-03-14 20:43:15 +01:00
139c0b5eb1
Kernel: Make a UserVM wrapper around Bitmap and use that to allocate user VM
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This lets us allocate more than one page of memory from the user side.
2023-01-13 19:05:20 +01:00
