KVM_DEV_RISCV_AIA_IMSIC_ISEL_BITS
((1U << KVM_DEV_RISCV_AIA_IMSIC_ISEL_BITS) - 1)
(((__vcpu) << KVM_DEV_RISCV_AIA_IMSIC_ISEL_BITS) | \
((__attr) >> KVM_DEV_RISCV_AIA_IMSIC_ISEL_BITS)