On Tue, Dec 20, 2022 at 9:53 PM Michael S. Tsirkin <m...@redhat.com> wrote: > > On Tue, Nov 29, 2022 at 04:10:34PM +0800, Jason Wang wrote: > > Hi All: > > > > According to ATS, device should work if ATS is disabled. This is not > > correctly implemented in the current intel-iommu since it doesn't > > handle the UNMAP notifier correctly. This breaks the vhost-net + > > vIOMMU without dt. > > > > The root casue is that the when there's a device IOTLB miss (note that > > it's not specific to PCI so it can work without ATS), Qemu doesn't > > build the IOVA tree, so when guest start an IOTLB invalidation, Qemu > > won't trigger the UNMAP notifier. > > > > Fixing by build IOVA tree during IOMMU translsation. > > > > Thanks > > > IIUC you were going to post v2? At least commit log fixes.
Yes. Thanks > > > Jason Wang (3): > > intel-iommu: fail MAP notifier without caching mode > > intel-iommu: fail DEVIOTLB_UNMAP without dt mode > > intel-iommu: build iova tree during IOMMU translation > > > > hw/i386/intel_iommu.c | 58 ++++++++++++++++++++++++------------------- > > 1 file changed, 33 insertions(+), 25 deletions(-) > > > > -- > > 2.25.1 >
