Shrinking the Hypervisor One Subsystem at a Time

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Provided by: Association for Computing Machinery
Topic: Data Centers
Format: PDF
Efficient and secure networking between virtual machines is crucial in a time where a large share of the services on the Internet and in private datacenters run in virtual machines. To achieve this efficiency, virtualization solutions, such as Qemu/KVM, move towards a monolithic system architecture in which all performance critical functionality is implemented directly in the hypervisor in privileged mode. This is an attack surface in the hypervisor that can be used from compromised VMs to take over the virtual machine host and all VMs running on it.
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