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A new batch of Intel Xe kernel graphics driver improvements has been queued for the Linux 7.1 kernel cycle. The headline change is enabling Transparent Hugepages (THP) support for device pages (drm_pagemap), which delivers a major performance boost for Shared Virtual Memory (SVM) workloads. Intel engineer Francois Dugast reports that after a 2MB page fault, overall SVM servicing is more than 7x faster, and the proportion of time spent on the actual data copy jumps from 23% to 80% thanks to reduced CPU overhead. The pull also adds a new xe_vm_get_property_ioctl interface for querying failed page faults from user-space, improved VF FLR synchronization for Xe VFIO support, an L2 cache flush optimization for Xe3P_LPG, and various page reclamation fixes.

Intel Xe Driver In Linux 7.1 Enabling THP For Device Pages As A Big SVM Win