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October 24-26, 2018 - Edinburgh, Scotland, UK
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Friday, October 26 • 12:00 - 12:30
KVM/arm Meets the Villain: Mitigating Spectre - Marc Zyngier, ARM

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The recent discovery of the Spectre and Meltdown vulnerabilities has
been an unfortunate disruption in the otherwise rapid pace of KVM/arm
development. Significant efforts have been put into analysing how CPU
implementations are affected, and in developing a mitigation framework
that covers both KVM and VMs by allowing VMs to call hypervisor
services to mitigate the vulnerabilities in the virtual machine.

This talk will briefly explain how the vulnerabilities affect ARM
systems and describe the range of techniques introduced in KVM/arm to
mitigate Spectre v2, v3, v3a and v4. We will explain how our
mitigation framework hides as much of the diversity of CPU
implementations and system integration while trying to keep the
overhead as low as possible.

avatar for Marc Zyngier

Marc Zyngier

Kernel Nacker, ARM
Marc has been working on the Linux kernel since an unexpected encounter with 0.99pl13 in 1993. His first contribution was merged in 1996 in the form of the original version of the MD driver. Having played with fault tolerant systems at Bull, worked on exotic (and ultimately doomed... Read More →

Friday October 26, 2018 12:00 - 12:30 BST
Sidlaw Auditorium