RADIX_KERN_VIRT_START  101 arch/powerpc/include/asm/book3s/64/radix.h #define RADIX_VMALLOC_START	RADIX_KERN_VIRT_START
RADIX_KERN_VIRT_START  579 arch/powerpc/mm/book3s64/radix_pgtable.c 	__kernel_virt_start = RADIX_KERN_VIRT_START;