Hi, Changes from v3: https://lore.kernel.org/qemu-devel/[email protected]/
-Addressed feedback and picked up tags. Thanks! -Added an helper for viommu free(patch #2) -Removed explicit overflow handling in sequence checking, since sequence numbers are uint32_t (patch #5) >From v2: When accel=on is enabled for an SMMUv3 instance, the host hardware SMMUv3 may generate Stage-1 (S1) event notifications that are intended for the vIOMMU instance in userspace. This series adds QEMU support for receiving such host events through the vEVENTQ interface and propagating them to the guest. The implementation uses the vEVENTQ support provided by the IOMMUFD subsystem in the kernel. I have tested this on a Grace platform using some hacks to generate events. Further testing and feedback are welcome. The complete branch is here: https://github.com/shamiali2008/qemu-master/tree/master-smmuv3-accel-v9-dmabuf-v4-veventq-v4 Given that the accelerated SMMUv3 v9 series is now applied, I think it makes sense for this small series to go along with it. Thanks, Shameer [0] https://lore.kernel.org/qemu-devel/[email protected]/ Nicolin Chen (2): backends/iommufd: Introduce iommufd_backend_alloc_veventq hw/arm/smmuv3-accel: Allocate vEVENTQ for accelerated SMMUv3 devices Shameer Kolothum (3): hw/arm/smmuv3-accel: Add viommu free helper hw/arm/smmuv3: Introduce a helper function for event propagation hw/arm/smmuv3-accel: Read and propagate host vIOMMU events backends/iommufd.c | 31 +++++++++ backends/trace-events | 1 + hw/arm/smmuv3-accel.c | 144 ++++++++++++++++++++++++++++++++++++--- hw/arm/smmuv3-accel.h | 8 +++ hw/arm/smmuv3-internal.h | 4 ++ hw/arm/smmuv3.c | 25 +++++-- hw/arm/trace-events | 2 +- include/system/iommufd.h | 12 ++++ 8 files changed, 212 insertions(+), 15 deletions(-) -- 2.43.0
