Re: [Xen-devel] [PATCH RFC 4/8] libxl: cpuid: add guest topology support

[Wei Liu <wei.liu2@xxxxxxxxxx>]

On Mon, Feb 22, 2016 at 09:02:10PM +0000, Joao Martins wrote:
> Introduce internal cpuid routine for setting the topology
> as seen by the guest. The topology is made based on
> leaf 1 and leaf 4 for Intel, more specifically setting:
> 
> Number of logical processors:
>       proccount  (CPUID.1:EBX[16:24])
> 
> Number of physical cores - 1:
>       procpkg    (CPUID.(4,0):EBX[26:32])
> 
> cache core count - 1:
>       proccountX (CPUID.(4,Y):EBX[14:26])
> 
>       given that X is l1d, l1i, l2 or l3
>       and Y the correspondent subleave [0-3]
> 
> Signed-off-by: Joao Martins <joao.m.martins@xxxxxxxxxx>
> ---
> CC: Ian Jackson <ian.jackson@xxxxxxxxxxxxx>
> CC: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>
> CC: Ian Campbell <ian.campbell@xxxxxxxxxx>
> CC: Wei Liu <wei.liu2@xxxxxxxxxx>
> ---
>  tools/libxl/libxl_cpuid.c    | 38 ++++++++++++++++++++++++++++++++++++++
>  tools/libxl/libxl_internal.h |  2 ++
>  2 files changed, 40 insertions(+)
> 
> diff --git a/tools/libxl/libxl_cpuid.c b/tools/libxl/libxl_cpuid.c
> index deb81d2..e220566 100644
> --- a/tools/libxl/libxl_cpuid.c
> +++ b/tools/libxl/libxl_cpuid.c
> @@ -352,6 +352,44 @@ void libxl_cpuid_set(libxl_ctx *ctx, uint32_t domid,
>                       (const char**)(cpuid[i].policy), cpuid_res);
>  }
>  
> +static int libxl_cpuid_parse_list(libxl_cpuid_policy_list *topo,
> +                                  char **keys, int *vals, size_t sz)

Just call it cpuid_parse_list is fine.

Wei.

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