prevent_user_access   77 arch/powerpc/include/asm/kup.h 	prevent_user_access(NULL, from, size, KUAP_READ);
prevent_user_access   82 arch/powerpc/include/asm/kup.h 	prevent_user_access(to, NULL, size, KUAP_WRITE);
prevent_user_access   88 arch/powerpc/include/asm/kup.h 	prevent_user_access(to, from, size, KUAP_READ_WRITE);