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e0146a108c
Compiling the nvlink stuff relies on the SPAPR_TCE_IOMMU otherwise there
are compile errors:
drivers/vfio/pci/vfio_pci_nvlink2.c:101:10: error: implicit declaration of function 'mm_iommu_put' [-Werror,-Wimplicit-function-declaration]
ret = mm_iommu_put(data->mm, data->mem);
As PPC only defines these functions when the config is set.
Previously this wasn't a problem by chance as SPAPR_TCE_IOMMU was the only
IOMMU that could have satisfied IOMMU_API on POWERNV.
Fixes: 179209fa12 ("vfio: IOMMU_API should be selected")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Message-Id: <0-v1-83dba9768fc3+419-vfio_nvlink2_kconfig_jgg@nvidia.com>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
48 lines
1.3 KiB
Plaintext
48 lines
1.3 KiB
Plaintext
# 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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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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