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