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| author | Alex Williamson <alex.williamson@redhat.com> | 2020-07-27 13:43:37 -0600 |
|---|---|---|
| committer | Alex Williamson <alex.williamson@redhat.com> | 2020-07-27 13:43:37 -0600 |
| commit | bf3551e150e5a231ac60f2bd750f63ab5484010a (patch) | |
| tree | 5253414921777f90e6cf254ebf4a6c593ba72429 /drivers/vfio | |
| parent | 26afdd98821bd36e4e1de88dd00a8c70d83accdf (diff) | |
| download | lwn-bf3551e150e5a231ac60f2bd750f63ab5484010a.tar.gz lwn-bf3551e150e5a231ac60f2bd750f63ab5484010a.zip | |
vfio/pci: Add Intel X550 to hidden INTx devices
Intel document 333717-008, "Intel® Ethernet Controller X550
Specification Update", version 2.7, dated June 2020, includes errata
#22, added in version 2.1, May 2016, indicating X550 NICs suffer from
the same implementation deficiency as the 700-series NICs:
"The Interrupt Status bit in the Status register of the PCIe
configuration space is not implemented and is not set as described
in the PCIe specification."
Without the interrupt status bit, vfio-pci cannot determine when
these devices signal INTx. They are therefore added to the nointx
quirk.
Cc: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Diffstat (limited to 'drivers/vfio')
| -rw-r--r-- | drivers/vfio/pci/vfio_pci.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/vfio/pci/vfio_pci.c b/drivers/vfio/pci/vfio_pci.c index de881a6cff35..b0258b79bb5b 100644 --- a/drivers/vfio/pci/vfio_pci.c +++ b/drivers/vfio/pci/vfio_pci.c @@ -207,6 +207,8 @@ static bool vfio_pci_nointx(struct pci_dev *pdev) case 0x1580 ... 0x1581: case 0x1583 ... 0x158b: case 0x37d0 ... 0x37d2: + /* X550 */ + case 0x1563: return true; default: return false; |