LOONGARCH_CSR_KS0
#define read_gcsr_kscratch0() gcsr_read(LOONGARCH_CSR_KS0)
#define write_gcsr_kscratch0(val) gcsr_write(val, LOONGARCH_CSR_KS0)
#define EXCEPTION_KS0 LOONGARCH_CSR_KS0
set_gcsr_hw_flag(LOONGARCH_CSR_KS0);
kvm_restore_hw_gcsr(csr, LOONGARCH_CSR_KS0);
kvm_save_hw_gcsr(csr, LOONGARCH_CSR_KS0);