OSDev.org

This morning I started working on a "kernel" in Rust. I cloned the rust-barebones-kernel repo by thepowersgang on GitHub. After getting IDT working, I went ahead and started working on Multiboot2 info struct parsing. The value that gets passed on for the pointer is equal to 0x9500 on QEMU, which I believe is the physical address. When trying to use this value to parse it into a struct, I just get a page fault and nothing else. After doing some research I figured I might have to add the kernel base (located at 0xFFFFFFFF80000000), which does "work" but leads to crazy values in the multiboot tag struct (type: 129920, size: 2147549183).

Here is my code in a gist (sorry if gists are not accepted, first time posting here)

Thanks for any help y'all can give

Multiboot and Multiboot2 have different boot information formats. You're trying to parse Multiboot2 boot information, but your bootloader is giving you Multiboot boot information.