From 3f68b0318bbbd61bf08478ab99a149f0d9e5156e Mon Sep 17 00:00:00 2001 From: Alex Williamson Date: Thu, 14 Jul 2011 13:27:03 -0600 Subject: [PATCH] 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-format-patch failed