Re: [RFC 13/13] i386: enable rust hpet for pc when rust is enabled

[Paolo Bonzini <pbonzini@redhat.com>]

On 12/5/24 07:07, Zhao Liu wrote:
> Add HPET configuration in PC's Kconfig options, and select HPET device
> (Rust version) if Rust is supported.
> 
> Signed-off-by: Zhao Liu <zhao1.liu@intel.com>
> ---
>   hw/i386/Kconfig       | 2 ++
>   hw/timer/Kconfig      | 1 -
>   rust/hw/Kconfig       | 1 +
>   rust/hw/timer/Kconfig | 2 ++
>   4 files changed, 5 insertions(+), 1 deletion(-)
>   create mode 100644 rust/hw/timer/Kconfig
> 
> diff --git a/hw/i386/Kconfig b/hw/i386/Kconfig
> index 32818480d263..83ab3222c4f0 100644
> --- a/hw/i386/Kconfig
> +++ b/hw/i386/Kconfig
> @@ -39,6 +39,8 @@ config PC
>       select PCSPK
>       select I8257
>       select MC146818RTC
> +    select HPET if !HAVE_RUST
> +    select X_HPET_RUST if HAVE_RUST

HPET is optional, so you need to have...

>   config HPET
>       bool
> -    default y if PC
>   

+default y if PC && !HAVE_RUST

with a matching "default y if PC && HAVE_RUST" for X_HPET_RUST.

Paolo

>   config I8254
>       bool
> diff --git a/rust/hw/Kconfig b/rust/hw/Kconfig
> index 4d934f30afe1..36f92ec02874 100644
> --- a/rust/hw/Kconfig
> +++ b/rust/hw/Kconfig
> @@ -1,2 +1,3 @@
>   # devices Kconfig
>   source char/Kconfig
> +source timer/Kconfig
> diff --git a/rust/hw/timer/Kconfig b/rust/hw/timer/Kconfig
> new file mode 100644
> index 000000000000..afd980335037
> --- /dev/null
> +++ b/rust/hw/timer/Kconfig
> @@ -0,0 +1,2 @@
> +config X_HPET_RUST
> +    bool