[libvirt] [PATCH 1/5] conf: add support for specifying CPU "dies" parameter

Daniel Henrique Barboza danielhb413 at gmail.com
Tue Jan 7 17:48:32 UTC 2020


FWIW, this patch is conflicting with current master to apply due to changes
of labels made recently. The fix is rather simple:



On 12/19/19 9:42 AM, Daniel P. Berrangé wrote:
> Recently CPU hardware vendors have started to support a new level of
> inside the CPU package topology known as a "die". Thus the hierarchy
> is now:
> 
>    sockets > dies > cores > threads
> 
> This adds support for "dies" in the XML parser, with the value
> defaulting to 1 if not specified for backwards compatibility.
> 
> For example a system with 64 logical CPUs might report
> 
>     <topology sockets="4" dies="2" cores="4" threads="2"/>
> 
> Signed-off-by: Daniel P. Berrangé <berrange at redhat.com>
> ---
>   docs/formatcaps.html.in                        |  2 +-

[...]

> @@ -1059,6 +1067,12 @@ virCPUDefIsEqual(virCPUDefPtr src,
>           goto cleanup;
>       }
>   
> +    if (src->dies != dst->dies) {
> +        MISMATCH(_("Target CPU dies %d does not match source %d"),
> +                 dst->dies, src->dies);
> +        goto cleanup;
> +    }
> +
>       if (src->cores != dst->cores) {
>           MISMATCH(_("Target CPU cores %d does not match source %d"),
>                    dst->cores, src->cores);


In this chunk there is no 'cleanup' anymore, thus you'll just 'return false'
in the new code you're adding.





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