netdev - Re: [Qemu-devel] PCI passthrough of 40G ethernet interface (Openstack/KVM)

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <550FBE70.40201@redhat.com>
Date:	Mon, 23 Mar 2015 08:19:12 +0100
From:	Stefan Assmann <sassmann@...hat.com>
To:	jacob jacob <opstkusr@...il.com>
CC:	Shannon Nelson <shannon.nelson@...el.com>,
	Bandan Das <bsd@...hat.com>,
	Alex Williamson <alex.williamson@...hat.com>,
	QEMU Developers <qemu-devel@...gnu.org>,
	kvm-devel <kvm@...r.kernel.org>, netdev@...r.kernel.org
Subject: Re: [Qemu-devel] PCI passthrough of 40G ethernet interface (Openstack/KVM)

On 20.03.2015 21:55, jacob jacob wrote:
> On Thu, Mar 19, 2015 at 10:18 AM, Stefan Assmann <sassmann@...hat.com> wrote:
>> On 19.03.2015 15:04, jacob jacob wrote:
>>> Hi Stefan,
>>> have you been able to get PCI passthrough working without any issues
>>> after the upgrade?
>>
>> My XL710 fails to transfer regular TCP traffic (netperf). If that works
>> for you then you're already one step ahead of me. Afraid I can't help
>> you there.
> 
> I have data transfer working when trying the test runs on the host
> itself. Are you seeing problems when directly trying the TCP traffic
> from the host itself?

Correct.

> The issues that i am seeing are specific to the case when the devices
> are passed via PCI passthrough into the VM.
> 
> Any ideas whether this would be a kvm/qemu or i40e driver issue?
> (Updating to the latest firmware and using latest i40e driver didn't
> seem to help.)

Hard to say, that's probably something for Intel to look into.

  Stefan
--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html