[libvirt] [PATCH v2] vz: allow to start vz driver without host cache info

[Martin Kletzander]

On Tue, Jul 11, 2017 at 03:20:38PM +0300, Mikhail Feoktistov wrote:
>
>On 11.07.2017 12:22, Martin Kletzander wrote:
>> On Tue, Jul 11, 2017 at 04:59:05AM -0400, Mikhail Feoktistov wrote:
>>> Show warning message instead of fail operation.
>>> It happens if kernel or cpu doesn't support reporting cpu cache info.
>>> In case of Virtuozzo file "id" doesn't exist.
>>
>> What is your kernel version?
>>
>  3.10.0-514.16.1.vz7.30.10
>> Is there another way of getting the information about the cache ID?
>> Maybe we need to parse the name of the cache directory 'index2' would be
>> id 2 maybe?  If there is no other way, then this fix is fine (as most
>> drivers do the same thing), but I would rather fix it if that's
>> possible.  Unfortunately the cache information is structured stupidly
>> compared to other kernel-provided topology-related information.
>Only kernel 4.11 reports cache ID (maybe 4.10, but not checked)
>4.9 doesn't report ID

Oh, so that is just older kernel.  OK, then.

Reviewed-by: Martin Kletzander <mkletzan at redhat.com>

>ID doesn't match to indexN
>

Yeah, in vanilla it is number per level and easily deductible, but not
really something we want to add into the code.
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