Stefan Hajnoczi

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PGP Key Fingerprint: 8695 A8BF D3F9 7CDA AC35 775A 9CA4 ABB3 81AB 73C8

stefanha gmail com

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@stefanha:matrix.org

Slides

2024

IOThread Virtqueue Mapping: Improving virtio-blk SMP scalability in QEMU at KVM Forum 2024, slides (pdf)

2023

Trust, Confidentiality, and Hardening: The VIRTIO Lessons with Michael S. Tsirkin at Linux Plumbers Conference 2023, slides (pdf)

vhost-user-blk: A fast userspace block I/O interface at FOSDEM 2023, slides (pdf)

2022

QEMU Block Layer Features & Concepts, slides (pdf)

Introducing the libblkio High-Performance Block I/O API at KVM Forum 2022/Open Source Summit Europe 2022, slides (pdf)

What's coming in VIRTIO 1.2: New virtual I/O devices and features at FOSDEM 2022, slides (pdf)

2021

Live Migrating VFIO, vhost-user, and vfio-user Devices: Out-of-process Device Migration at KVM Forum 2021, slides (pdf)

Bring Your Own Virtual Devices: Frameworks for Software and Hardware Device Virtualization at VHPC 2021, slides (pdf)

The Evolution of File Descriptor Monitoring in Linux: From select(2) to io_uring at FOSDEM 2021, slides (pdf)

2020

Optimizing for NVMe Drives: The 10 Microsecond Challenge at KVM Forum 2020, slides (pdf)

virtio-fs: A Shared File System for Virtual Machines at FOSDEM '20, slides (pdf)

2019

Virtio-fs for Kata Containers storage at Kata Containers Architecture Committee Call, slides (pdf)

virtio-fs: A Shared File System for Virtual Machines at KVM Forum 2019, slides (pdf)

2018

Security in QEMU: How Virtual Machines provide Isolation at KVM Forum 2018, slides (pdf)

2017

Applying Polling Techniques to QEMU: Reducing virtio-blk I/O Latency at KVM Forum 2017, slides (pdf)

Using NVDIMM under KVM: Applications of persistent memory in virtualization at FOSDEM 2017, slides (pdf)

2016

QEMU Community Growth Through Open Source Internships at KVM Forum 2016, slides (pdf)

NFS over virtio-vsock: Host/guest file sharing for virtual machines at Connectathon 2016, slides (pdf)

2015

Speeding up your kernel development cycle with QEMU at Kernel Recipes 2015, slides (pdf)

virtio-vsock: Zero-configuration host/guest communication at KVM Forum 2015, slides (pdf)

KVM Architecture Overview: 2015 Edition, slides (pdf)

Observability in KVM: Troubleshooting virtual machines at FOSDEM 2015, slides (pdf)

2014

Towards multi-threaded device emulation in QEMU at KVM Forum 2014, slides (pdf)

User Case Study: Tracing in the QEMU emulator at Tracing Summit 2014, slides (pdf)

VIRTIO 1.0: Paravirtualized I/O for KVM and beyond at devconf.cz 2014, slides (pdf)

2013

Block Layer Status Report at KVM Forum 2013 with Kevin Wolf, slides (pdf)

QEMU Code Overview, high-level training material for new QEMU contributors, slides (pdf)

2012

GlusterFS for KVM Users and Developers at KVM Forum 2012, slides (pdf)

2011

Running and Tuning KVM at LinuxCon North America 2011, slides (pdf)

Virtio SCSI: An alternative virtualized storage stack for KVM at KVM Forum 2011 with Paolo Bonzini, slides (pdf)

An Updated Overview of the QEMU Storage Stack at LinuxCon Japan 2011, slides (pdf)

2010

Optimizing the QEMU Storage Stack at Linux Plumbers Conference 2010, slides (pdf)

Papers

MORPHUZZ: Bending (Input) Space to Fuzz Virtual Devices in 31st USENIX Security Symposium (USENIX Security 22), paper link

QEMU/CPC: Static Analysis and CPS Conversion for Safe, Portable, and Efficient Coroutines in PEPM '14 Proceedings of the ACM SIGPLAN 2014 Workshop on Partial Evaluation and Program Manipulation, paper (pdf)