Re: [Xen-devel] pci pass-through, NIC card

[Jean Guyader <jean.guyader@xxxxxxxxxxxxx>]

Kay, Allen M wrote:
> Does this happen during xen/dom0 boot time or during HVM guest boot?
>
> Are you using and desktop or server platform?  Are you using the latest
> BIOS?  Some older BIOS does not initialize VT-d HW properly.
>
> Allen
It's a server platform, I could indeed check if it is the latest bios.

This is happen during the HVM guest boot, all initialisation in dom0 are 
ok. The device I tried to pass-through was a pci NIC.
I have tried to pass-through a PCIe NIC and it works better, I mean the 
hvm guest boot. The NIC card is well detected by the hvm guest but, 
there is still a problem. When I tried to get an ip address from dhcp I 
received a storm of "iommu_page_fault" (enclosed the log).
The pci device I try to pass-through is at the address 8:0:0.

I have disable the pci msi in the guest.

Thanks,

--
Jean Guyader

(XEN) [VT-D]iommu.c:882: iommu_page_fault: iommu->reg = ffff828bfff57000
(XEN) [VT-D]iommu.c:854: iommu_fault_status: Primary Pending Fault
(XEN) [VT-D]iommu.c:839: iommu_fault:DMA Read: 8:0.0 addr eb0f000 REASON c 
iommu->reg = ffff828bfff57000
(XEN) print_vtd_entries: domain_id = 7fff bdf = 8:0:0 gmfn = eb0f
(XEN)     hg->pgd == NULL
(XEN) [VT-D]io.c:265:d1 hvm_dpci_eoi:: mirq = 14
(XEN) [VT-D]iommu.c:882: iommu_page_fault: iommu->reg = ffff828bfff57000
(XEN) [VT-D]iommu.c:854: iommu_fault_status: Primary Pending Fault
(XEN) [VT-D]iommu.c:839: iommu_fault:DMA Read: 8:0.0 addr eb0f000 REASON c 
iommu->reg = ffff828bfff57000
(XEN) print_vtd_entries: domain_id = 7fff bdf = 8:0:0 gmfn = eb0f

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