5 ms·
Hypervisor in 1k Lines
- nighthawk454 1y agoAlso discussed at: https://news.ycombinator.com/item?id=45070019 https://news.ycombinator.com/item?id=45070019
- userbinator 1y agoSee also https://ionescu007.github.io/SimpleVisor/ https://ionescu007.github.io/SimpleVisor/ in around 500 lines of C.
- notorandit 1y agoThat's not risc-v, though.
- notorandit 1y agoWhy demoting? It Is x86-64 only!
- chubot 1y agoHm I would like to see this in C rather than Rust. And I wonder if you can run the 1000 line OS in C along with the 1000 line hypervisor It would be nice to see a demo!
- LiamPowell 1y agoHow do you define an OS? You can write an EFI "OS" that prints "Hello, world" in approximately 5 lines.
- spongebobism 1y agoIt's a bit more than that. > We'll implement basic context switching, paging, user mode, a command-line shell, a disk device driver, and file read/write operations in C. see https://1000os.seiya.me/en/ https://1000os.seiya.me/en/
- dark-star 1y agothat's not an OS, that's an EFI application
- courtcircuits 1y agoThis repo seems to handle VM exits and memory initialization : https://github.com/soulxu/kvmsample/blob/master/main.c https://github.com/soulxu/kvmsample/blob/master/main.c I'd say it's a good place to start !
- TacticalCoder 1y ago[dead]
- arghwhat 1y agoThis is a cool intro to how virtualization instructions work, but people need to understand that it is not revolutionary simplicity or anything like that. It's just a a cool tech demo lacking all the important bits of a modern hypervisor required to make it practical, like paravirtualized drivers for example. Same when someone claims to have written an OS in 1000 lines and all it does is get you to real mode with VGA graphics and an interactive (but useless) prompt. (Note that you can benefit from virtualization technology in specialized scenarios outside common hypervisors, but that's not really what's being demoed here.)
- ge96 1y agoAny thoughts on OsakaOS
- arghwhat 1y agoThat it's fine to do things just to have fun an mess around, but thats all there is to it. It's not even an OS at the current state. Other small OS's are actually OS's and can be impressive efforts. Sometimes they bring new concepts or paradigms, but that itself is rarely more than a curiosity without impact. Still fun though, at the very least for the authors.
- curtisszmania 1y ago[dead]
- giveita 1y agoWhy does it need qemu? Isn't it a qemu?