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Add PCI device support for VFIO. PCI devices expose regions for accessing config space, I/O port space, and MMIO areas of the device. PCI config access is virtualized in the kernel, allowing us to ensure the integrity of the system, by preventing various accesses while reducing duplicate support across various userspace drivers. I/O port supports read/write access while MMIO also supports mmap of sufficiently sized regions. Support for INTx, MSI, and MSI-X interrupts are provided using eventfds to userspace. Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
9 lines
258 B
Plaintext
9 lines
258 B
Plaintext
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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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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