[$] A call to reconsider address-space isolation

When the kernel is running, it has access to its entire address space -usually including all of physical memory - evenif only a small portion of that address space is actually needed. Thatincreases the kernel's vulnerability to speculative attacks. An address-spaceisolation patch set aiming to change this situation has beencirculating for a few years, but has never been seriously considered formerging into the mainline. At the 2022 LinuxPlumbers Conference, Ofir Weisse sought to convince the developmentcommunity to reconsider address-space isolation.