25、x86_64 Support — The Linux Kernel documentationhttps://www.kernel.org/doc/html/latest/x86/x86_64/index.html
25.1、AMD64 Specific Boot Options
25.1.1、Machine check25.1.2、APICs25.1.3、Timing25.1.4、Idle loop25.1.5、Rebooting25.1.6、Non Executable Mappings25.1.7、NUMA25.1.8、ACPI25.1.9、PCI25.1.10、IOMMU (input/output memory management unit)25.1.11、Miscellaneous25.2、General note on [U]EFI x86_64 support
25.2.1、Mechanics25.3、Memory Management
25.3.1、Complete virtual memory map with 4-level page tables25.3.2、Complete virtual memory map with 5-level page tables25.4、5-level paging
25.4.1、Overview25.4.2、Enabling 5-level paging25.4.3、User-space and large virtual address space25.5、Fake NUMA For CPUSets25.6、Firmware support for CPU hotplug under Linux/x86-6425.7、Configurable sysfs parameters for the x86-64 machine check code25.8、Using FS and GS segments in user space applications
25.8.1、Common FS and GS usage25.8.2、Reading and writing the FS/GS base address25.8.3、Accessing FS/GS base with arch_prctl()25.8.4、Accessing FS/GS base with the FSGSbase instructions25.8.5、Compiler support for FS/GS based addressing25.8.6、FS/GS based addressing with inline assembly