Tejas Upadhyay focused on stabilizing the DRM XE Virtual Function (VF) path under SR-IOV in the geerlingguy/linux repository, addressing a critical issue that caused unrecoverable faults due to skipped TLB invalidations for VFs. By reintroducing proper TLB flushing and implementing VF-specific handling in the drm/xe driver, Tejas improved VF stability and reduced downtime for virtualization workloads. The work involved targeted C code changes in kernel development, specifically within device driver and GPU programming contexts. Delivered as a focused patch series, these updates enhanced system reliability and ensured more resilient VF operations in production SR-IOV environments.