KVM: arm64: Block module loading based on cmdline or HVC

Disable module loading, based on the cmdline option
kvm-arm.protected_modules. If enabled, the feature can later be
irreversibly disabled with the HVC __pkvm_close_module_registration().

Signed-off-by: Vincent Donnefort <vdonnefort@google.com>
Signed-off-by: Quentin Perret <qperret@google.com>
7 files changed