Tag
kernel-entry
- Sep 24, 2026 32-bit Compatibility System Calls on a 64-bit Kernel How one kernel serves two pointer widths, why the compatibility entry path differs from the native one, and where the translation layer leaks. operating systems
- Nov 27, 2023 What a System Call Actually Costs Where the cycles go between the trap instruction and the return, which costs are fixed and which scale with the argument, and why mitigations changed the baseline. operating systems
- Sep 14, 2023 How a System Call Transfers Control to the Kernel What the x86-64 syscall instruction actually changes, why the kernel cannot switch stacks for free, and how the two return paths back to user mode differ. operating systems