Commit 50173329 authored Jul 27, 2020 by Giovanni Cabiddu Committed by Alex Williamson Jul 27, 2020

vfio/pci: Add QAT devices to denylist

The current generation of Intel® QuickAssist Technology devices
are not designed to run in an untrusted environment because of the
following issues reported in the document "Intel® QuickAssist Technology
(Intel® QAT) Software for Linux" (document number 336211-014):

QATE-39220 - GEN - Intel® QAT API submissions with bad addresses that
             trigger DMA to invalid or unmapped addresses can cause a
             platform hang
QATE-7495  - GEN - An incorrectly formatted request to Intel® QAT can
             hang the entire Intel® QAT Endpoint

The document is downloadable from https://01.org/intel-quickassist-technology
at the following link:
https://01.org/sites/default/files/downloads/336211-014-qatforlinux-releasenotes-hwv1.7_0.pdf



This patch adds the following QAT devices to the denylist: DH895XCC,
C3XXX and C62X.

Signed-off-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Reviewed-by: Fiona Trahe <fiona.trahe@intel.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>

parent 1f97970e

drivers/vfio/pci/vfio_pci.c

+15 −0

Original line number	Diff line number	Diff line
		@@ -75,6 +75,21 @@ static inline bool vfio_vga_disabled(void)

		static bool vfio_pci_dev_in_denylist(struct pci_dev *pdev)
		{
		switch (pdev->vendor) {
		case PCI_VENDOR_ID_INTEL:
		switch (pdev->device) {
		case PCI_DEVICE_ID_INTEL_QAT_C3XXX:
		case PCI_DEVICE_ID_INTEL_QAT_C3XXX_VF:
		case PCI_DEVICE_ID_INTEL_QAT_C62X:
		case PCI_DEVICE_ID_INTEL_QAT_C62X_VF:
		case PCI_DEVICE_ID_INTEL_QAT_DH895XCC:
		case PCI_DEVICE_ID_INTEL_QAT_DH895XCC_VF:
		return true;
		default:
		return false;
		}
		}

		return false;
		}

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