Intel Developer's Patch To Let SECCOMP Processes Like Web Browsers Opt Out Of Spectre V4

Currently the Linux kernel SECCOMP secure computing mode force-enables Spectre protections, which comes with obvious performance implications. When force-enabled, however, processes can't opt-out of the protection if they are not at risk to the likes of Spectre V4 "Speculative Store Bypass" issues. But a simple change being proposed would let such processes opt out if desired...