Re: PCI passthrough of 40G ethernet interface (Openstack/KVM)

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jacob jacob <opstkusr@xxxxxxxxx> writes:

>  Hi,
>
>  Seeing failures when trying to do PCI passthrough of Intel XL710 40G
> interface to KVM vm.
>      0a:00.1 Ethernet controller: Intel Corporation Ethernet
> Controller XL710 for 40GbE QSFP+ (rev 01)

You are assigning the PF right ? Does assigning VFs work or it's
the same behavior ?

> From dmesg on host:
>
>> [80326.559674] kvm: zapping shadow pages for mmio generation wraparound
>> [80327.271191] kvm [175994]: vcpu0 unhandled rdmsr: 0x1c9
>> [80327.271689] kvm [175994]: vcpu0 unhandled rdmsr: 0x1a6
>> [80327.272201] kvm [175994]: vcpu0 unhandled rdmsr: 0x1a7
>> [80327.272681] kvm [175994]: vcpu0 unhandled rdmsr: 0x3f6
>> [80327.376186] kvm [175994]: vcpu0 unhandled rdmsr: 0x606

These are harmless and are related to unimplemented PMU msrs,
not VFIO.

Bandan
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