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Commit e194bbdf authored by Paolo Bonzini's avatar Paolo Bonzini
Browse files

kvm: x86: default legacy PCI device assignment support to "n" 



VFIO has proved itself a much better option than KVM's built-in
device assignment.  It is mature, provides better isolation because
it enforces ACS, and even the userspace code is being tested on
a wider variety of hardware these days than the legacy support.

Disable legacy device assignment by default.

Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
parent f71f81d7

arch/x86/kvm/Kconfig

+4 −3
Original line number Diff line number Diff line
@@ -88,13 +88,14 @@ config KVM_MMU_AUDIT 
config KVM_DEVICE_ASSIGNMENT

	bool "KVM legacy PCI device assignment support"

	depends on KVM && PCI && IOMMU_API

	default y

	default n

	---help---

	  Provide support for legacy PCI device assignment through KVM.  The

	  kernel now also supports a full featured userspace device driver

	  framework through VFIO, which supersedes much of this support.

	  framework through VFIO, which supersedes this support and provides

	  better security.



	  If unsure, say Y.

	  If unsure, say N.



# OK, it's a little counter-intuitive to do this, but it puts it neatly under

# the virtualization menu.