Scoped User Access In Linux 6.19 To Reduce Speculation Barriers & Its Performance Hit
Merged yesterday to the Linux 6.19 Git codebase was the “core/uaccess” pull that introduces new scoped user-mode access with auto-cleanup functionality. This can reduce the number of speculation barriers encountered when needing to access user-mode memory and thereby avoiding some of the performance penalties incurred by speculation barriers… ⌘ Read more