Linux Plumbers Conference 2026

Session

Birds of a Feather (BoF)

Not scheduled

226. Updates and Future Directions for Resctrl RDT/MPAM/AMD/RISC-V

Fenghua Yu (NVIDIA), Ben Horgan, Reinette Chatre

Significant progress has been made on the resctrl subsystem recently, driven by architectural evolutions across multiple hardware vendors. Key developments include Intel's separate control and monitor domains, ARM's IOMMU, NVIDIA's CPU-less MPAM support and MBW MAX hard limits, AMD's monitor counter assignment, and initial RISC-V inclusion.

Following last year's highly productive BoF, which...

54. FUSE mostly-passthrough filesystems

Amir Goldstein (CTERA Networks)

Many production FUSE filesystems do not need to reimplement the full filesystem stack. They need to mirror an existing directory with full fidelity while intercepting only a small subset of operations for caching, tiering, HSM stub manifestation, or auditing.

To make these filesystems easier to build, we introduce [libfuse_passthrough][1] - a C++ library that handles all FUSE plumbing and...

158. Defining the pkeys ABI

Kevin Brodsky (Arm)

We have been supporting pkeys [1] on Linux for 10 years now, and they
are no longer specific to x86: arm64 and powerpc support them too.
Unfortunately, important gaps remain in the kernel-user ABI, making it
difficult to deploy pkeys robustly for key use-cases.

pkeys work in a fairly simple way: the user allocates a new pkey and
then assigns that pkey to a VMA. Access to that VMA is...

45. Virtio and Vhost-User Ecosystem for Production and Automotive Systems Microconference

Dorinda Bassey (Red Hat), Albert Esteve (Red Hat), Stefano Garzarella (Red Hat)

The vhost-user protocol started as a simple QEMU feature, but it has grown into a standard used across the entire Linux virtualization community. Today, it powers production workloads in the cloud (e.g. QEMU and cloud-hypervisor), lightweight environments like libkrun, and modern automotive systems.

However, as the ecosystem expands, we are hitting new "plumbing" bottlenecks. For example,...

42. Camera & ISP MC

Laurent Pinchart (Ideas on Board Oy)

While cameras have been ubiquitous in Linux systems for more than a decade, vendors have historically been very reluctant to disclose any information about Image Signal Processors (ISP), leading to the proliferation of out-of-tree kernel drivers and closed-source userspace stacks. The situation started to change with the launch of the libcamera project at the end of 2018, and progress has...

309. Test BoF NPASS notifications

Shuah Khan (The Linux Foundation)

Test BoF NPASS notifications