Intel Lunar Lake On Linux Can Roughly Match Windows 11 Xe2 Graphics – When Not Stuck At 400MHz

Earlier this month I looked at the AMD RDNA 3.5 graphics with Strix Point between Windows 11 and Ubuntu 25.04 Linux. The testing showed the AMD RDNA 3.5 graphics on the open-source Linux driver up to around 96% the performance of Radeon Software on Windows. The most frequent question that came up from that most recent round of benchmarking was wondering how the Intel Xe2 graphics on Core Ultra Series 2 “Lunar Lake” now compares between Windows 11 and Linux given that both drivers have been maturing the past several months. Here’s the story of the Xe2 graphics between Windows 11 and Ubuntu 25.04 while using a Lenovo ThinkPad X1 Carbon Gen 13 Aura Edition laptop.

[$] In search of a stable BPF verifier

BPF is, famously, not part of the kernel’s promises of user-space stability. New
kernels can and do break existing BPF programs; the BPF developers try to
fix unintentional regressions as they happen, but the whole thing can be something of a bumpy
ride for users trying to deploy BPF programs across multiple kernel versions.
Shung-Hsi Yu and Daniel Xu had two different approaches to fixing the problem
that they presented at the 2025 Linux Storage, Filesystem,
Memory-Management, and BPF Summit.

[$] The state of the memory-management development process, 2025 edition

Andrew Morton, the lead maintainer for the kernel’s memory-management
subsystem, tends to be quiet during the Linux Storage, Filesystem,
Memory-Management, and BPF Summit, preferring to let the developers work
things out on their own. That changes, though, when he leads the
traditional development-process session in the memory-management track. At
the 2025 gathering, this discussion covered a number of ways in which the
process could be improved, but did not unearth any significant problems.

Kexec HandOver “KHO” Looks Like It Might Be Ready For The Linux 6.16 Kernel

Being worked on for a while now by engineers from Amazon, Microsoft, and Google has been Kexec HandOver “KHO” as a means of allowing some kernel state to be retained when Kexec’ing into a new kernel such as for maintenance/security updates. The KHO patches in recent days were queued up into Andrew Morton’s “MM” staging area leading to hope that this work is ready for mainlining with the Linux 6.16 kernel cycle this summer…