Elf64_Fdesc
#define Elf_Fdesc Elf64_Fdesc
typedef Elf64_Fdesc func_desc_t;
Elf64_Fdesc desc;
mod->arch.fdesc_count * sizeof(Elf64_Fdesc);
Elf64_Fdesc fdesc;
Elf64_Fdesc __user *ufdesc = (Elf64_Fdesc __user *)A(haddr & ~3);