MAX_PHYSMEM_BITS 21 include/asm-x86/sparsemem.h # define MAX_PHYSMEM_BITS 36 MAX_PHYSMEM_BITS 25 include/asm-x86/sparsemem.h # define MAX_PHYSMEM_BITS 32 MAX_PHYSMEM_BITS 30 include/asm-x86/sparsemem.h # define MAX_PHYSMEM_BITS 44