He has contributed to the KVM port for BookE.HV platforms and the e500mc core. He is the author for Freescale PAMU (IOMMU) driver. He’s working on enhancements for the ARM SMMU driver for Freescale Layerscape platforms. Varun is also looking at Virtio performance analysis and optimizations. He has made presentations on KVM and Virtio optimizations at KVM Forum (2012/2014). He has also conducted talks, on dependability in case of virtualized platforms at the IEEE DSN conference. He has a publication on KVM optimizations for BookE platforms without hardware virtualization assists, at ASPLOS 2013. He has conducted a joint talk on network virtualization at the Linux foundation collaboration summit.