Re: Question about Spectre/Meltdown patches in early Core processors
Posted on 2025-05-06, 03:14
As I recall, the most expensive mitigation in the whole Meltdown/Spectre mess was kernel page table isolation (called KVAS on Windows). It relies on changing out the page table when switching between kernel and user space. In other words, rather than relying on x86 privilege levels to block user …