The Linux kernel’s ftrace mechanism makes it possible to dynamically attach hooks to kernel functions, and can be used for a variety of purposes including tracing, debugging, and live-patching. The low-level details of ftrace differ by architecture, and recently the...
Landlock enables to sandbox Linux applications but it might be challenging to identify the cause of denied accesses. Being able to debug a security policy is an important feature for an access control system. Likewise, logging denied accesses (and their reason) helps...
It is not ok that we speed weeks, even months, trying to solve why software is slow. Companies waste money on compute costs, users are unhappy with latency, and product evaluations run out of investigation time. It should not take more than a week to identify the root...
We have improved the Linux page fault mechanism to reduce the number of faults and handle them more quickly when they do happen. By managing memory in large folios, we reduce the number of page faults. The 4KiB page used on many architectures is simply too small for...
