Discovering CPU features from userspace with ELF_HWCAP
As hardware architectures evolve they introduce new features – many of these features are abstracted away by the kernel yet result in some benefit to […]
Booting ARM without an ARM
It’s possible (and easy) to develop software for ARM based platforms without having physical ARM based hardware on your desk – there are many ways […]
The indirection of outb, iowrite and friends
The {in,out}{b,w,l} functions of the kernel provide the mechanism for reading from and writing to what we may describe as port I/O (PIO). The API […]