Re: [Xen-devel] SR-IOV problems - HVM cannot access network

[Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>]

On Wed, 2 Mar 2011, David White wrote:
> Thanks for your help so far.
> 
> Ubuntu Maverick is only running in the guest HVM domains.
> 
> I have two boards I am testing with, both with Intel 5520 chipset.  I'm using
> two 82576 nics from two different vendors, one attached to either board.  Both
> systems have AMI bios.  One system (call it systemA) has bios options for both
> VT-d and SR-IOV, and both are enabled, as is I/OAT.  The other system 
> (systemB)
> has bios options for VT-d and "Coherency support" (which seemed to help me
> enumerate the VFs), and both are enabled (no mention of I/OAT).
> 
> SystemA runs Debian Squeeze and the xen kernel, vmm and tools from that 
> distro.
> SystemB runs Fedora14 with the well-known "jeremy" kernel
> (http://git.kernel.org/?p=linux/kernel/git/jeremy/xen.git;a=shortlog;h=xen/stable-2.6.32.x),
> and xen-4.0.1 hypervisor built from source (unaltered).
> 
> Both systems are experiencing the same behavior.
> 
> attached are dom0 and hvm ethregs output for the VF using '-o -m'
> flags.  This one was taken from the Debian host ("systemA")
 
could you please try adding

acpi=0

in your VM config file?

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