AMD was the first to come out with its proposed changes in February 2021: AMD Supervisor Entry Extensions. Intel followed in March with its flexible return and event delivery (FRED) design. What ...

Hi all,<br><br>I was trying to figure out how APIC and IRQL are related, and I can't quite get it organized in my head. So far I have this, which I think is right:<br><br>The PIC used to support up to ...

Just as you can often treat device registers as a memory-mapped struct, you can treat an interrupt vector as a memory-mapped array. In my last column, I suggested that you use casts sparingly and with ...

Guest post about Linux CPU power management for embedded systems, specifically covering cpuidle in depth, including drivers and governors.