From bf3551e150e5a231ac60f2bd750f63ab5484010a Mon Sep 17 00:00:00 2001 From: Alex Williamson Date: Mon, 27 Jul 2020 13:43:37 -0600 Subject: [PATCH] vfio/pci: Add Intel X550 to hidden INTx devices MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 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 Signed-off-by: Alex Williamson --- drivers/vfio/pci/vfio_pci.c | 2 ++ 1 file changed, 2 insertions(+) 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;