[PATCH v1 01/15] power/kvm_vm: enforce enabled lcore ID check

[lihuisong (C)]

On 4/16/2026 11:48 PM, Stephen Hemminger wrote:
> On Thu, 16 Apr 2026 11:05:58 +0800
> Huisong Li <lihuisong at huawei.com> wrote:
>
>> The locre ID in cpufreq power must be enabled core in application.
> Spelling error, use checkpatch next time, it runs a spell checker.
> Also run devtools/check-git-log there other issues in the commit messages.
Sorry for this.
Yeah, I used checkpatch.sh and check-git-log.sh before sent out.
But it didn't found this. I guess that because the "locre" is not a word.
>> Use rte_lcore_is_enabled to verify lcore_id.
>>
>> Fixes: 6f987b594fa6 ("power: refactor core power management")
>> Cc: stable at dpdk.org
>>
>> Signed-off-by: Huisong Li <lihuisong at huawei.com>
>> ---
> The rte_lcore_is_enabled() will return false for service lcores.
> Is this a bug or a feature here?
My understanding is that the ROLE_RTE core is used to tasks on data 
plane and the ROLE_SERVICE core is used to periodic or control-plane tasks.
Currently, power management in DPDK is mainly processed based on 
services on the data plane, like the usage in pmd_mgmt or l3fwd-power.
However, the tasks on the service cores may also occupy 100% CPU.
Therefore, power library or driver should be able to be work with these 
tasks.
 From this perspective, allowing the ROLE_SERVICE core to set power has 
the least impact on applications in this series.
what do you think, Stephen?