Re: [PATCH v3 3/6] target/riscv: check the in-kernel irqchip support

[Daniel Henrique Barboza <dbarboza@ventanamicro.com>]

On 5/26/23 03:25, Yong-Xuan Wang wrote:
> We check the in-kernel irqchip support when using KVM acceleration.
> 
> Signed-off-by: Yong-Xuan Wang <yongxuan.wang@sifive.com>
> Reviewed-by: Jim Shu <jim.shu@sifive.com>
> ---

Reviewed-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>

>   target/riscv/kvm.c | 13 ++++++++++++-
>   1 file changed, 12 insertions(+), 1 deletion(-)
> 
> diff --git a/target/riscv/kvm.c b/target/riscv/kvm.c
> index 0f932a5b96..eb469e8ca5 100644
> --- a/target/riscv/kvm.c
> +++ b/target/riscv/kvm.c
> @@ -433,7 +433,18 @@ int kvm_arch_init(MachineState *ms, KVMState *s)
>   
>   int kvm_arch_irqchip_create(KVMState *s)
>   {
> -    return 0;
> +    if (kvm_kernel_irqchip_split()) {
> +        error_report("-machine kernel_irqchip=split is not supported "
> +                     "on RISC-V.");
> +        exit(1);
> +    }
> +
> +    /*
> +     * If we can create the VAIA using the newer device control API, we
> +     * let the device do this when it initializes itself, otherwise we
> +     * fall back to the old API
> +     */
> +    return kvm_check_extension(s, KVM_CAP_DEVICE_CTRL);
>   }
>   
>   int kvm_arch_process_async_events(CPUState *cs)