On Sun, 22 May 2016 13:21:51 +0300 David Kiarie <davidkiar...@gmail.com> wrote:
> Add AMD IOMMU emulaton to Qemu in addition to Intel IOMMU > The IOMMU does basic translation, error checking and has a > minimal IOTLB implementation. This IOMMU bypassed the need > for target aborts by responding with IOMMU_NONE access rights > and exempts the region 0xfee00000-0xfeefffff from translation > as it is the q35 interrupt region. We also advertise features > that are not yet implemented to please the Linux IOMMU driver. > > IOTLB aims at implementing commands on real IOMMUs which is > essential for debugging and may not offer any performance > benefits > > Signed-off-by: David Kiarie <davidkiar...@gmail.com> > --- > hw/i386/Makefile.objs | 1 + > hw/i386/amd_iommu.c | 1401 > +++++++++++++++++++++++++++++++++++++++++++++++++ > hw/i386/amd_iommu.h | 340 ++++++++++++ > include/hw/pci/pci.h | 2 + > 4 files changed, 1744 insertions(+) > create mode 100644 hw/i386/amd_iommu.c > create mode 100644 hw/i386/amd_iommu.h I don't see any callouts to memory_region_notify_iommu() here, so this won't yet support assigned devices. Do you have any plans to add that support? Thanks, Alex
