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Soft-RoCE in qemu on CentOS 7?

From: Matthias Leopold
Subject: Soft-RoCE in qemu on CentOS 7?
Date: Tue, 24 Nov 2020 15:10:57 +0100
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0


I don't know if this really the right place to ask but I want to know if Soft-RoCE (https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/networking_guide/sec-configuring_soft-_roce) is supposed to work between VMs that are running in qemu on CentOS 7 hypervisor hosts.

I found two posts which explain my problem (ibv_rc_pingpong fails with a "Failed to modify QP to RTR"): https://lists.openfabrics.org/pipermail/users/2019-May/000729.html (he's probably using Virtualbox)

I also found this:
which I can't use at the moment, but I'm not even sure I would really need this. I would be happy if someone could just confirm if "Soft-RoCE in qemu on CentOS 7" works or not.

thank you very much

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