From: "Kishan Simha (ksimha)" <ksimha@cisco.com>
To: "users@dpdk.org" <users@dpdk.org>
Subject: DPDK 21.11: __hn_nvs_execute() error on Hyper-V
Date: Tue, 7 Oct 2025 01:52:58 +0000 [thread overview]
Message-ID: <CY8PR11MB72448C85CB32C4B7A1DA15A4D5E0A@CY8PR11MB7244.namprd11.prod.outlook.com> (raw)
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Hello DPDK community,
I am encountering an issue with the Hyper-V network driver (net_netvsc) when running a DPDK application in a virtual machine environment.
I consistently see the following error logged:
__hn_nvs_execute(): invalid NVS resp len 32 (expect 40)
hn_dev_configure(): subchannel configuration failed
The issue was not present when using DPDK version 19.11.3 on the same VM and Hyper-V setup.
The issue began after migrating to DPDK version 21.11.0. The application fails to initialize the network ports with this error.
Hyper-V Host OS : Window Server 2019
Guest OS : Linux version 5.10
Based on the version information, it appears a change between DPDK 19 and 21.11 is causing a communication incompatibility with my Hyper-V environment. Is this a known regression, and are there any recommended workarounds or patches available? Has anyone else observed this behavior?
Any insight or direction would be greatly appreciated.
Regards,
Kishan
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reply other threads:[~2025-10-08 6:22 UTC|newest]
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