Intel vIOMMU is still lacking of a complete IOMMU notifier mechanism.
Before that is achieved, let's open a door for vhost DMAR support, which
only requires device-IOTLB based cache invalidations (IOMMU_NONE typed
notifies).
Signed-off-by: Peter Xu <pet...@redhat.com>
---
hw/i386/intel_iommu.c | 10 ++++++----
1 file changed, 6 insertions(+), 4 deletions(-)
diff --git a/hw/i386/intel_iommu.c b/hw/i386/intel_iommu.c
index e0d4f23..5a78cb2 100644
--- a/hw/i386/intel_iommu.c
+++ b/hw/i386/intel_iommu.c
@@ -1979,10 +1979,12 @@ static void vtd_iommu_notify_started(MemoryRegion
*iommu,
{
VTDAddressSpace *vtd_as = container_of(iommu, VTDAddressSpace, iommu);
- hw_error("Device at bus %s addr %02x.%d requires iommu notifier which "
- "is currently not supported by intel-iommu emulation",
- vtd_as->bus->qbus.name, PCI_SLOT(vtd_as->devfn),
- PCI_FUNC(vtd_as->devfn));
+ if (flag == IOMMU_RW) {
+ hw_error("Device at bus %s addr %02x.%d requires iommu notifier which "
+ "is currently not supported by intel-iommu emulation",
+ vtd_as->bus->qbus.name, PCI_SLOT(vtd_as->devfn),
+ PCI_FUNC(vtd_as->devfn));
+ }
}
static const VMStateDescription vtd_vmstate = {
--
2.7.4
