Questions tagged [kernel]
Code that is intended to run in an operating system kernel or kernel module
29 questions
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MemoryGraveyardDriver.sys - a kernel mode device driver managing a kilobyte of RAM for random reading/writing: Take II
(See the previous and initial iteration.)
This time I have incorporated some improvement points made by G. Sliepen:
driver.cpp:
...
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MemoryGraveyardDriver.sys - a kernel mode device driver managing a kilobyte of RAM for random reading/writing
(See the second and next iteration.)
Intro
I have this GitHub repository. Basically, it does not do anything fancy: it has a byte buffer of 1Kb size, and it intercepts ...
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LKM: Extract cpu model name from /proc/cpuinfo
I wrote a small LKM that opens the /proc/cpuinfo file, reads it line by line, and attempts to the cpu model name.
If the function fails to extract the cpu model ...
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Simple slab allocator in C
Here is the plan:
a slab takes up 1 page and it has PGSIZE / blocksize amount of blocks
the minimum blocksize is 8 bytes, otherwise the pointer to the next block ...
2
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Thread scheduler in C
I have made a simple round robin scheduler that switches between threads in ptable array. Currently it's only for 1 CPU, so there are no locks at the moment.
But ...
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363
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Virtual memory manager in C
Virtual Memory manager that has functions, mappage, unmappage, remappage
If the physical ...
3
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1
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370
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Bitmap page allocator in C
Bitmap page allocator that scans the bitmap linearly looking for size amount of pages. Everytime it founds a free page, it check if the next ...
3
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1
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283
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UEFI bootloader
UEFI bootloader.
It reads the file kernel.elf on the disk image, reads through the program headers, copies the LOAD segments into memory, and finally calls ...
2
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Virtual memory manager, physical memory manager and buddy allocator
I'm writing memory manager for my toy operating system and I would like to get some feedback. There is physical memory manager, which uses bitmap, virtual memory manager which uses buddy algorithm for ...
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OSDEV Physical Memory Manager (PMM) in C
I ported the Physical Memory Manager from Vinix into C for a little OS I'm working on. I'd love to get some feedback.
Here's my code:
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Implement 2D and 1D std::array in opencl kernel
I am asked to implement the following part of code into kernel code. Actually, I have tried but not sure about the std::array.
This is the original code for the ...
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Makefile to compile an OS which also uses functions/macros
So I've started writing an OS to know how they work, and I came up with the following makefile to compile it.
The reason I used a makefile is because I wanted to see everything it was doing and have ...
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Posix signal implementation
My hobby is Unix-like operating systems.
Recently I began writing my own sel4-based Posix compliant OS. Here's the code for internal signal handling functions which presents a kind of backend to help ...
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Choose a kernel for next system boot
I have been testing a number of kernel builds and I decide to have a go at writing some Python code. The idea is to select which kernel to boot on the next reboot. I could have done it in Bash but ...
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