On Tue, Jun 24, 2025 at 08:11:15AM +0000, Khalid Ali wrote: > This will break x86_64 cpus that doesn't support 5-level paging. No, it won't. The patchset removes compile-time config option to disable 5-level paging. After tha patchset all kernels will be built with 5-level paging *support*. The actual paging mode is chosen at boot time based on machine capabilities and kernel command line. Older HW will boot in 4-level paging mode just fine. -- Kiryl Shutsemau / Kirill A. Shutemov