LOONGARCH_CSR_ISR2
set_gcsr_hw_flag(LOONGARCH_CSR_ISR2);
kvm_restore_hw_gcsr(csr, LOONGARCH_CSR_ISR2);
kvm_save_hw_gcsr(csr, LOONGARCH_CSR_ISR2);
isr = csr_read(LOONGARCH_CSR_ISR2);