This is a respin of [1] [PATCH v5 0/4] VIRTIO-IOMMU: Introduce an aw-bits option (https://lore.kernel.org/all/20240215084315.863897-1-eric.au...@redhat.com/)
which now also integrates [PATCH v6 0/3] VIRTIO-IOMMU: Set default granule to host page size (https://lore.kernel.org/all/20240227165730.14099-1-eric.au...@redhat.com/) The introduction of those 2 new options and their new default values fix bugs when assigning VFIO devices protected by a virtio-iommu. patches 1 - 4: intro of the granule property, collected reviews - we used to set the default granule to 4k. This causes failures when hotplugging a VFIO device on a 64kB/64kB host/guest config: "vfio: DMA mapping failed, unable to continue". When the device is hotplugged the granule is already frozen to 4k wheras 64k is needed. This series introduces a new granule option which is set by default to the host page size. patches 5 - 9: intro of the aw-bits property, needs further review - we used to set the input address width to 64b. This causes failures with some assigned devices where the guest driver tries to use the full 64b input range whereas the physical IOMMU supports less bits (39/48 gaw for instance on VTD). New default usually match the host HW capability. For more details please see the cover letter of [1] and [2]. This series can be found at: https://github.com/eauger/qemu/tree/granule_aw_bits_v4 Eric Auger (9): qdev: Add a granule_mode property virtio-iommu: Add a granule property virtio-iommu: Change the default granule to the host page size qemu-options.hx: Document the virtio-iommu-pci granule option virtio-iommu: Trace domain range limits as unsigned int virtio-iommu: Add an option to define the input range width hw/i386/q35: Set virtio-iommu aw-bits default value to 39 hw/arm/virt: Set virtio-iommu aw-bits default value to 48 qemu-options.hx: Document the virtio-iommu-pci aw-bits option qapi/virtio.json | 18 +++++++++++++++ include/hw/i386/pc.h | 3 +++ include/hw/qdev-properties-system.h | 3 +++ include/hw/virtio/virtio-iommu.h | 3 +++ hw/arm/virt.c | 17 ++++++++++++++ hw/core/machine.c | 6 ++++- hw/core/qdev-properties-system.c | 14 ++++++++++++ hw/i386/pc.c | 6 +++++ hw/i386/pc_q35.c | 2 ++ hw/virtio/virtio-iommu.c | 35 +++++++++++++++++++++++++---- tests/qtest/virtio-iommu-test.c | 2 +- hw/virtio/trace-events | 2 +- qemu-options.hx | 11 +++++++++ 13 files changed, 115 insertions(+), 7 deletions(-) -- 2.41.0
