AMD INVLPGB Linux Patches Updated For Broadcast TLB Invalidation

Right before Christmas Mesa engineer Rik van Riel posted Linux kernel patches to make use of the AMD INVLPGB instruction for broadcast TLB invalidation. INVLPGB is present in AMD Ryzen and EPYC processors since Zen 3 and early data showed by Rik indicated nice improvement. A third iteration of those patches have already been posted as this AMD INLVPGB usage works its way to the mainline kernel...