From: Alex Williamson Date: Thu, 14 Jul 2011 19:27:03 +0000 (-0600) Subject: KVM: IOMMU: Disable device assignment without interrupt remapping X-Git-Tag: v3.1-rc1~264^2 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3f68b0318bbbd61bf08478ab99a149f0d9e5156e;p=pandora-kernel.git KVM: IOMMU: Disable device assignment without interrupt remapping 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. [avi: break long lines] Signed-off-by: Alex Williamson Signed-off-by: Marcelo Tosatti Signed-off-by: Avi Kivity --- Reading git-diff-tree failed