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: Paolo Bonzini <pbonzini@xxxxxxxxxx> --- arch/x86/kvm/Kconfig | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/arch/x86/kvm/Kconfig b/arch/x86/kvm/Kconfig index 413a7bf9efbb..a0f06a5947c5 100644 --- a/arch/x86/kvm/Kconfig +++ b/arch/x86/kvm/Kconfig @@ -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. -- 1.8.3.1 -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
