KVM_REG_MIPS_VEC_128
index = KVM_REG_MIPS_VEC_128(i);
case KVM_REG_MIPS_VEC_128(0) ... KVM_REG_MIPS_VEC_128(31):
idx = reg->id - KVM_REG_MIPS_VEC_128(0);
case KVM_REG_MIPS_VEC_128(0) ... KVM_REG_MIPS_VEC_128(31):
idx = reg->id - KVM_REG_MIPS_VEC_128(0);