Re: [PATCH v6 03/16] target-i386: Add cpu object access routines for Hypervisor level.

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On Mon, Sep 24, 2012 at 10:32:05AM -0400, Don Slutz wrote:
> These are modeled after x86_cpuid_get_xlevel and x86_cpuid_set_xlevel.
> 
> Signed-off-by: Don Slutz <Don@xxxxxxxxxxxxxxx>
> ---
>  target-i386/cpu.c |   29 +++++++++++++++++++++++++++++
>  1 files changed, 29 insertions(+), 0 deletions(-)
> 
> diff --git a/target-i386/cpu.c b/target-i386/cpu.c
> index 25ca986..451de12 100644
> --- a/target-i386/cpu.c
> +++ b/target-i386/cpu.c
> @@ -1166,6 +1166,32 @@ static void x86_cpuid_set_tsc_freq(Object *obj, Visitor *v, void *opaque,
>      cpu->env.tsc_khz = value / 1000;
>  }
>  
> +static void x86_cpuid_get_hv_level(Object *obj, Visitor *v, void *opaque,
> +                                const char *name, Error **errp)
> +{
> +    X86CPU *cpu = X86_CPU(obj);
> +
> +    visit_type_uint32(v, &cpu->env.cpuid_hv_level, name, errp);
> +}
> +
> +static void x86_cpuid_set_hv_level(Object *obj, Visitor *v, void *opaque,
> +                                const char *name, Error **errp)
> +{
> +    X86CPU *cpu = X86_CPU(obj);
> +    uint32_t value;
> +
> +    visit_type_uint32(v, &value, name, errp);
> +    if (error_is_set(errp)) {
> +        return;
> +    }
> +
> +    if (value != 0 && value < 0x40000000) {
> +        value += 0x40000000;
> +    }

Whats the purpose of this? Adds ambiguity.
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