[prev in list] [next in list] [prev in thread] [next in thread] 

List:       linux-iommu
Subject:    [PATCH] kvm: Disable device assignment without interrupt remapping
From:       mtosatti () redhat ! com (Marcelo Tosatti)
Date:       2011-07-19 14:43:04
Message-ID: 20110719144304.GA31520 () amt ! cnet
[Download RAW message or body]

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 at redhat.com>

Applied, thanks.


[prev in list] [next in list] [prev in thread] [next in thread]