Intel Gets Back To Working On Linear Address Masking Support For The Linux Kernel

Back in December 2020 Intel's programming reference manual was updated to cover Linear Address Masking (LAM) as a future CPU feature and there was some GNU toolchain activity around LAM while not much to report on the effort since then -- until today. A revised "request for comments" has been posted on the Intel Linear Address Masking enabling for the Linux kernel that allows for using untranslated address bits of 64-bit linear addresses to be used for storing arbitrary software metadata...