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authorAlex Williamson <alex.williamson@redhat.com>2011-12-20 21:59:03 -0700
committerAvi Kivity <avi@redhat.com>2011-12-25 17:13:31 +0200
commit423873736b78f549fbfa2f715f2e4de7e6c5e1e9 (patch)
tree62526563ccca81957a4c100aa0bc359dcd10af08 /Documentation
parent0924ab2cfa98b1ece26c033d696651fd62896c69 (diff)
downloadlinux-423873736b78f549fbfa2f715f2e4de7e6c5e1e9.tar.bz2
KVM: Remove ability to assign a device without iommu support
This option has no users and it exposes a security hole that we can allow devices to be assigned without iommu protection. Make KVM_DEV_ASSIGN_ENABLE_IOMMU a mandatory option. Signed-off-by: Alex Williamson <alex.williamson@redhat.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/virtual/kvm/api.txt3
1 files changed, 3 insertions, 0 deletions
diff --git a/Documentation/virtual/kvm/api.txt b/Documentation/virtual/kvm/api.txt
index 7945b0bd35e2..ee2c96b3ba5a 100644
--- a/Documentation/virtual/kvm/api.txt
+++ b/Documentation/virtual/kvm/api.txt
@@ -1151,6 +1151,9 @@ following flags are specified:
/* Depends on KVM_CAP_IOMMU */
#define KVM_DEV_ASSIGN_ENABLE_IOMMU (1 << 0)
+The KVM_DEV_ASSIGN_ENABLE_IOMMU flag is a mandatory option to ensure
+isolation of the device. Usages not specifying this flag are deprecated.
+
4.49 KVM_DEASSIGN_PCI_DEVICE
Capability: KVM_CAP_DEVICE_DEASSIGNMENT