+ 'slub_debug', # See setup_slub_debug() in mm/slub.c
+ 'iommu', # See iommu_setup() in arch/x86/kernel/pci-dma.c
+ 'vsyscall', # See vsyscall_setup() in arch/x86/entry/vsyscall/vsyscall_64.c
+ 'vdso32', # See vdso32_setup() in arch/x86/entry/vdso/vdso32-setup.c
+ 'vdso', # See vdso32_setup() in arch/x86/entry/vdso/vdso32-setup.c