# SPDX-License-Identifier: GPL-2.0-only
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config VFIO_PCI
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tristate "VFIO support for PCI devices"
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depends on VFIO && PCI && EVENTFD
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depends on MMU
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select VFIO_VIRQFD
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select IRQ_BYPASS_MANAGER
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help
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Support for the PCI VFIO bus driver. This is required to make
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use of PCI drivers using the VFIO framework.
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If you don't know what to do here, say N.
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config VFIO_PCI_VGA
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bool "VFIO PCI support for VGA devices"
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depends on VFIO_PCI && X86 && VGA_ARB
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help
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Support for VGA extension to VFIO PCI. This exposes an additional
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region on VGA devices for accessing legacy VGA addresses used by
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BIOS and generic video drivers.
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If you don't know what to do here, say N.
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config VFIO_PCI_MMAP
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depends on VFIO_PCI
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def_bool y if !S390
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config VFIO_PCI_INTX
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depends on VFIO_PCI
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def_bool y if !S390
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config VFIO_PCI_IGD
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bool "VFIO PCI extensions for Intel graphics (GVT-d)"
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depends on VFIO_PCI && X86
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default y
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help
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Support for Intel IGD specific extensions to enable direct
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assignment to virtual machines. This includes exposing an IGD
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specific firmware table and read-only copies of the host bridge
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and LPC bridge config space.
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To enable Intel IGD assignment through vfio-pci, say Y.
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config VFIO_PCI_NVLINK2
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def_bool y
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depends on VFIO_PCI && PPC_POWERNV && SPAPR_TCE_IOMMU
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help
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VFIO PCI support for P9 Witherspoon machine with NVIDIA V100 GPUs
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config VFIO_PCI_ZDEV
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bool "VFIO PCI ZPCI device CLP support"
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depends on VFIO_PCI && S390
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default y
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help
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Enabling this option exposes VFIO capabilities containing hardware
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configuration for zPCI devices. This enables userspace (e.g. QEMU)
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to supply proper configuration values instead of hard-coded defaults
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for zPCI devices passed through via VFIO on s390.
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Say Y here.
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