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Friday, August 26 • 2:30pm - 3:00pm
Vhost with Guest vIOMMU - Peter Xu & Wei Xu, Red Hat

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Vhost is the technique used in QEMU/KVM to accelerate IOs for virtio devices, so that guest IOs can be handled without trapping into QEMU userspace. While vhost boosts guest block/network performance, it also brings security issues considering it is (before this work) bypassing protection of vIOMMUs. This becomes a more critical issue for NFV scenarios, in which user-space drivers are vastly used. A problematic user space driver inside guest can directly corrupt guest kernel in no time. In this presentation, Jason Wang (Wei Xu as presenter) and Peter Xu will propose a solution to add guest vIOMMU protection for vhost devices, and some performance numbers.

avatar for Peter Xu

Peter Xu

Software Engineer, Red Hat
Software engineer at Red Hat virtualization team.

Wei Xu

Red Hat

Friday August 26, 2016 2:30pm - 3:00pm
Pier 3

Attendees (13)