Re: [PATCH] target-i386: adds PV_DEDICATED hint CPUID feature bit

[Paolo Bonzini <pbonzini@xxxxxxxxxx>]

On 09/02/2018 13:24, Wanpeng Li wrote:
> The guest fails to detect the new cpuid this time.

You have to debug the KVM_SET_CPUID2 ioctls and see why it is not set.

Paolo

> diff --git a/target/i386/cpu.c b/target/i386/cpu.c
> index d70954b..e2974ad 100644
> --- a/target/i386/cpu.c
> +++ b/target/i386/cpu.c
> @@ -358,6 +358,20 @@ static FeatureWordInfo feature_word_info[FEATURE_WORDS] = {
>          .cpuid_eax = KVM_CPUID_FEATURES, .cpuid_reg = R_EAX,
>          .tcg_features = TCG_KVM_FEATURES,
>      },
> +    [FEAT_KVM_HINTS] = {
> +        .feat_names = {
> +            "hint-dedicated", NULL, NULL, NULL,
> +            NULL, NULL, NULL, NULL,
> +            NULL, NULL, NULL, NULL,
> +            NULL, NULL, NULL, NULL,
> +            NULL, NULL, NULL, NULL,
> +            NULL, NULL, NULL, NULL,
> +            NULL, NULL, NULL, NULL,
> +            NULL, NULL, NULL, NULL,
> +        },
> +        .cpuid_eax = KVM_CPUID_FEATURES, .cpuid_reg = R_EDX,
> +        .tcg_features = TCG_KVM_FEATURES,
> +    },