Dave Young <dyo...@redhat.com> wrote: > > > This option allows userspace to pass the RSDP address to the kernel, which > > > makes it possible for a user to circumvent any restrictions imposed on > > > loading modules. Ignore the option when the kernel is locked down. > > > > I'm not really sure here. > > > > What exactly is the mechanism? > > Actually this acpi_rsdp param is created for EFI kexec reboot in old > days when we had not supported persistent efi vm space across kexec > reboot. At that time kexec reboot runs as noefi mode, it can not find > the acpi root table thus kernel will hang early. > > Now kexec can support EFI boot so this param is not necessary for most > user unless they still use efi=old_map.
Is this patch now unnecessary? David
