__vcpu_set_reg
r = __vcpu_set_reg(vcpu, reg_id, BAD_ID_REG_VAL);
ret = __vcpu_set_reg(vcpu, reg_info->reg, set_val);
ret = __vcpu_set_reg(vcpu, reg_info->reg, 0);
ret = __vcpu_set_reg(vcpu, reg_info->reg, BIT(reg_info->max_feat_bit + 1));
ret = __vcpu_set_reg(vcpu, reg_info->reg, FW_REG_ULIMIT_VAL(reg_info->max_feat_bit));
r = __vcpu_set_reg(vcpu, reg, val);
err = __vcpu_set_reg(vcpu, KVM_ARM64_SYS_REG(SYS_ID_AA64PFR0_EL1), val);
err = __vcpu_set_reg(vcpu, KVM_ARM64_SYS_REG(SYS_ID_AA64PFR0_EL1), val);
err = __vcpu_set_reg(vcpu, KVM_ARM64_SYS_REG(SYS_ID_AA64PFR0_EL1), val);
err = __vcpu_set_reg(vcpu, KVM_ARM64_SYS_REG(SYS_ID_AA64PFR1_EL1), val);
err = __vcpu_set_reg(vcpu, KVM_ARM64_SYS_REG(SYS_ID_AA64PFR1_EL1), val);
err = __vcpu_set_reg(vcpu, KVM_ARM64_SYS_REG(SYS_ID_AA64PFR1_EL1), val);
err = __vcpu_set_reg(vcpu, KVM_ARM64_SYS_REG(SYS_ID_AA64PFR1_EL1), val);
__vcpu_set_reg(vcpu, id, val);
__vcpu_set_reg(vcpu, cfgid, val);
__vcpu_set_reg(vcpu, csrid, val);
rc = __vcpu_set_reg(vcpu, feature, 1);
rc = __vcpu_set_reg(vcpu, feature, 1);
rc = __vcpu_set_reg(vcpu, RISCV_ISA_EXT_REG(i), 0);
rc = __vcpu_set_reg(vcpu, RISCV_SBI_EXT_REG(i), 0);
__vcpu_set_reg(vcpu, feature, 1);
r = __vcpu_set_reg(vcpu, KVM_X86_REG_KVM(reg), rsvd_val);