mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-11 14:53:56 +08:00
PCI: Never treat a VF as a multifunction device
Per the SR-IOV spec rev 1.1: 3.4.1.9 Header Type (Offset 0Eh) "... For VFs, this register must be RO Zero." Unfortunately some devices get this wrong, ex. Emulex OneConnect 10Gb NIC. When they do it makes us handle ACS testing and therefore IOMMU groups as if they were actual multifunction devices and require ACS capabilities to make sure there's no peer-to-peer between functions. VFs are never traditional multifunction devices, so simply clear this bit before we get any further into setup. Link: https://bugzilla.kernel.org/show_bug.cgi?id=68431 Signed-off-by: Alex Williamson <alex.williamson@redhat.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
This commit is contained in:
parent
c2a5a829e2
commit
aa93197736
@ -84,6 +84,7 @@ static int virtfn_add(struct pci_dev *dev, int id, int reset)
|
||||
virtfn->dev.parent = dev->dev.parent;
|
||||
virtfn->physfn = pci_dev_get(dev);
|
||||
virtfn->is_virtfn = 1;
|
||||
virtfn->multifunction = 0;
|
||||
|
||||
for (i = 0; i < PCI_SRIOV_NUM_BARS; i++) {
|
||||
res = dev->resource + PCI_IOV_RESOURCES + i;
|
||||
|
Loading…
Reference in New Issue
Block a user