Re: [PATCH] kvm: Disable device assignment without interruptremapping

From: Marcelo Tosatti
Date: Tue Jul 19 2011 - 11:46:40 EST

On Thu, Jul 14, 2011 at 01:27:03PM -0600, Alex Williamson wrote:
> IOMMU interrupt remapping support provides a further layer of
> isolation for device assignment by preventing arbitrary interrupt
> block DMA writes by a malicious guest from reaching the host. By
> default, we should require that the platform provides interrupt
> remapping support, with an opt-in mechanism for existing behavior.
> Both AMD IOMMU and Intel VT-d2 hardware support interrupt
> remapping, however we currently only have software support on
> the Intel side. Users wishing to re-enable device assignment
> when interrupt remapping is not supported on the platform can
> use the "allow_unsafe_assigned_interrupts=1" module option.
> Signed-off-by: Alex Williamson <alex.williamson@xxxxxxxxxx>

Applied, thanks.

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