USR_REG_OFFSET     26 arch/arm/kvm/emulate.c #define USR_REG_OFFSET(_num) REG_OFFSET(usr_regs.uregs[_num])
USR_REG_OFFSET     20 arch/arm64/kvm/regmap.c #define USR_REG_OFFSET(R) REG_OFFSET(compat_usr(R))