Documentation
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Index ¶
Constants ¶
This section is empty.
Variables ¶
This section is empty.
Functions ¶
func CreateMemfdFromReader ¶
CreateMemfdFromReader creates an anonymous file in memory via memfd_create and copies data from reader.
func HandleNo5LVLWorkaround ¶
func HandleNo5LVLWorkaround()
HandleNo5LVLWorkaround adds "no5lvl" to GRUB config and reboots to disable 5-level paging, which is incompatible with the Talos kernel (compiled without CONFIG_X86_5LEVEL).
After the reboot the user must re-run boot-to-talos.
func Is5LevelPagingActive ¶
func Is5LevelPagingActive() bool
Is5LevelPagingActive detects if the host kernel uses 5-level page tables (LA57).
5-level paging extends the virtual address space from 48-bit (4-level) to 57-bit. Detection works by attempting mmap at an address above the 4-level canonical limit (2^48). If the mapping succeeds, the kernel is using 5-level page tables.
This matters for kexec: if the host runs 5-level paging but the target kernel (Talos) is compiled without CONFIG_X86_5LEVEL, the kexec handoff will triple-fault because the target decompressor cannot handle the 5→4 level paging transition.
func KexecLoadFromAssets ¶
func KexecLoadFromAssets(assets *types.BootAssets, extraCmdline string) error
KexecLoadFromAssets loads kernel via kexec_file_load syscall from BootAssets.
func RunBootMode ¶
func RunBootMode(source types.ImageSource, extraArgs []string)
RunBootMode executes boot mode: shows summary, asks confirmation, loads kernel via kexec.
Types ¶
This section is empty.
Source Files