Xen and the art of virtualization
SOSP '03 Proceedings of the nineteenth ACM symposium on Operating systems principles
Protection strategies for direct access to virtualized I/O devices
ATC'08 USENIX 2008 Annual Technical Conference on Annual Technical Conference
Bridging the gap between software and hardware techniques for I/O virtualization
ATC'08 USENIX 2008 Annual Technical Conference on Annual Technical Conference
Q-clouds: managing performance interference effects for QoS-aware clouds
Proceedings of the 5th European conference on Computer systems
On the DMA mapping problem in direct device assignment
Proceedings of the 3rd Annual Haifa Experimental Systems Conference
Seawall: performance isolation for cloud datacenter networks
HotCloud'10 Proceedings of the 2nd USENIX conference on Hot topics in cloud computing
Ally: OS-transparent packet inspection using sequestered cores
WIOV'10 Proceedings of the 2nd conference on I/O virtualization
SideCar: building programmable datacenter networks without programmable switches
Hotnets-IX Proceedings of the 9th ACM SIGCOMM Workshop on Hot Topics in Networks
VAMOS: virtualization aware middleware
WIOV'11 Proceedings of the 3rd conference on I/O virtualization
SOSP '11 Proceedings of the Twenty-Third ACM Symposium on Operating Systems Principles
Ally: OS-Transparent Packet Inspection Using Sequestered Cores
Proceedings of the 2011 ACM/IEEE Seventh Symposium on Architectures for Networking and Communications Systems
vPF_RING: towards wire-speed network monitoring using virtual machines
Proceedings of the 2011 ACM SIGCOMM conference on Internet measurement conference
ELI: bare-metal performance for I/O virtualization
ASPLOS XVII Proceedings of the seventeenth international conference on Architectural Support for Programming Languages and Operating Systems
Virtualization challenges: a view from server consolidation perspective
VEE '12 Proceedings of the 8th ACM SIGPLAN/SIGOPS conference on Virtual Execution Environments
CompSC: live migration with pass-through devices
VEE '12 Proceedings of the 8th ACM SIGPLAN/SIGOPS conference on Virtual Execution Environments
WiP Abstract: Virtual Network Platform for Large Scale CPS Testbed
ICCPS '12 Proceedings of the 2012 IEEE/ACM Third International Conference on Cyber-Physical Systems
Coexisting scheduling policies boosting i/o virtual machines
Euro-Par'11 Proceedings of the 2011 international conference on Parallel Processing - Volume 2
Towards exitless and efficient paravirtual I/O
Proceedings of the 5th Annual International Systems and Storage Conference
Detecting co-residency with active traffic analysis techniques
Proceedings of the 2012 ACM Workshop on Cloud computing security workshop
Rigorous rental memory management for embedded systems
ACM Transactions on Embedded Computing Systems (TECS) - Special section on ESTIMedia'12, LCTES'11, rigorous embedded systems design, and multiprocessor system-on-chip for cyber-physical systems
Secure I/O device sharing among virtual machines on multiple hosts
Proceedings of the 40th Annual International Symposium on Computer Architecture
Protocol Responsibility Offloading to Improve TCP Throughput in Virtualized Environments
ACM Transactions on Computer Systems (TOCS)
Empirical study of performance benefits of hardware assisted virtualization
Proceedings of the 6th ACM India Computing Convention
FasTrak: enabling express lanes in multi-tenant data centers
Proceedings of the ninth ACM conference on Emerging networking experiments and technologies
vTurbo: accelerating virtual machine I/O processing using designated turbo-sliced core
USENIX ATC'13 Proceedings of the 2013 USENIX conference on Annual Technical Conference
I/o paravirtualization at the device file boundary
Proceedings of the 19th international conference on Architectural support for programming languages and operating systems
SR-IOV based Virtual Network Sharing
Proceedings of the Second International Conference on Innovative Computing and Cloud Computing
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SR-IOV capable network devices offer the benefits of direct I/O throughput and reduced CPU utilization while greatly increasing the scalability and sharing capabilities of the device. SR-IOV allows the benefits of the paravirtualized driver's throughput increase and additional CPU usage reductions in HVMs (Hardware Virtual Machines). SR-IOV uses direct I/O assignment of a network device to multiple VMs, maximizing the potential for using the full bandwidth capabilities of the network device, as well as enabling unmodified guest OS based device drivers which will work for different underlying VMMs. Drawing on our recent experience in developing an SR-IOV capable networking solution for the Xen hypervisor we discuss the system level requirements and techniques for SR-IOV enablement on the platform. We discuss PCI configuration considerations, direct MMIO, interrupt handling and DMA into an HVM using an IOMMU (I/O Memory Management Unit). We then explain the architectural, design and implementation considerations for SR-IOV networking in Xen in which the Physical Function has a driver running in the driver domain that serves as a "master" and each Virtual Function exposed to a guest VM has its own virtual driver.