LOONGARCH_CSR_LLBCTL
#define read_gcsr_llbctl() gcsr_read(LOONGARCH_CSR_LLBCTL)
#define write_gcsr_llbctl(val) gcsr_write(val, LOONGARCH_CSR_LLBCTL)
int llbit = (csr_read32(LOONGARCH_CSR_LLBCTL) & 0x1);
csr_write32(CSR_LLBCTL_KLO, LOONGARCH_CSR_LLBCTL);
set_gcsr_hw_flag(LOONGARCH_CSR_LLBCTL);
kvm_restore_hw_gcsr(csr, LOONGARCH_CSR_LLBCTL);
kvm_save_hw_gcsr(csr, LOONGARCH_CSR_LLBCTL);