On 29.11.2021 16:33, Roger Pau Monne wrote:
> Introduce an interface that returns a specific leaf/subleaf from a cpu
> policy in xen_cpuid_leaf_t format.
> 
> This is useful to callers can peek data from the opaque
> xc_cpu_policy_t type.
> 
> No caller of the interface introduced on this patch.
> 
> Note that callers of find_leaf need to be slightly adjusted to use the
> new helper parameters.

Is this sentence a leftover from an earlier version? I can't associate
it with anything.

> --- a/tools/libs/guest/xg_cpuid_x86.c
> +++ b/tools/libs/guest/xg_cpuid_x86.c
> @@ -855,6 +855,29 @@ int xc_cpu_policy_update_msrs(xc_interface *xch, 
> xc_cpu_policy_t *policy,
>      return rc;
>  }
>  
> +int xc_cpu_policy_get_cpuid(xc_interface *xch, const xc_cpu_policy_t *policy,
> +                            uint32_t leaf, uint32_t subleaf,
> +                            xen_cpuid_leaf_t *out)

Is it common practice in libxc / libxg to have xch parameters even if
they're unused?

Jan


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