| Message ID | 20240626082727.1278530-1-eric.auger@redhat.com (mailing list archive) |
|---|---|
| Headers | show |
| Series | VIRTIO-IOMMU/HostIOMMUDevice: Fixes and page size mask rework | expand |
On Wed, Jun 26, 2024 at 10:26:45AM +0200, Eric Auger wrote: > The 2 first patches are fixes of > cf2647a76e ("virtio-iommu: Compute host reserved regions") > They can be taken separately of the rest. > > Then the series uses the HostIOMMUDevice interface to fetch > information about the page size mask supported along the assigned > device and propagate it to the virtio-iommu. This is a similar > work as what was done in > > VIRTIO-IOMMU/VFIO: Fix host iommu geometry handling series > > but this time for the page size mask. Using this new > infrastructure allows to handle page size mask conflicts > earlier on device hotplug as opposed to current QEMU > abort: > > qemu-system-aarch64: virtio-iommu virtio-iommu-memory-region-8-0 > does not support frozen granule 0x10000 > qemu: hardware error: vfio: DMA mapping failed, unable to continue > > With this series the hotplug nicely fails. > > Also this allows to remove hacks consisting in transiently enabling > IOMMU MRs to collect coldplugged device page size mask before machine > init. Those hacks were introduced by > > 94df5b2180d6 ("virtio-iommu: Fix 64kB host page size VFIO device > assignment") > > The series can be found at: > https://github.com/eauger/qemu/tree/virtio-iommu-psmask-rework-v1 virtio things: Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Feel free to merge. > > Eric Auger (7): > virtio-iommu: Fix error handling in > virtio_iommu_set_host_iova_ranges() > vfio-container-base: Introduce vfio_container_get_iova_ranges() helper > HostIOMMUDevice : remove Error handle from get_iova_ranges callback > HostIOMMUDevice: Introduce get_page_size_mask() callback > virtio-iommu : Retrieve page size mask on > virtio_iommu_set_iommu_device() > memory: remove IOMMU MR iommu_set_page_size_mask() callback > virtio-iommu: Revert transient enablement of IOMMU MR in bypass mode > > include/exec/memory.h | 38 -------- > include/hw/vfio/vfio-container-base.h | 9 ++ > include/sysemu/host_iommu_device.h | 11 ++- > hw/vfio/common.c | 8 -- > hw/vfio/container-base.c | 15 ++++ > hw/vfio/container.c | 16 ++-- > hw/vfio/iommufd.c | 21 +++-- > hw/virtio/virtio-iommu.c | 121 +++++++++++++------------- > system/memory.c | 13 --- > hw/virtio/trace-events | 2 +- > 10 files changed, 117 insertions(+), 137 deletions(-) > > -- > 2.41.0
The 2 first patches are fixes of cf2647a76e ("virtio-iommu: Compute host reserved regions") They can be taken separately of the rest. Then the series uses the HostIOMMUDevice interface to fetch information about the page size mask supported along the assigned device and propagate it to the virtio-iommu. This is a similar work as what was done in VIRTIO-IOMMU/VFIO: Fix host iommu geometry handling series but this time for the page size mask. Using this new infrastructure allows to handle page size mask conflicts earlier on device hotplug as opposed to current QEMU abort: qemu-system-aarch64: virtio-iommu virtio-iommu-memory-region-8-0 does not support frozen granule 0x10000 qemu: hardware error: vfio: DMA mapping failed, unable to continue With this series the hotplug nicely fails. Also this allows to remove hacks consisting in transiently enabling IOMMU MRs to collect coldplugged device page size mask before machine init. Those hacks were introduced by 94df5b2180d6 ("virtio-iommu: Fix 64kB host page size VFIO device assignment") The series can be found at: https://github.com/eauger/qemu/tree/virtio-iommu-psmask-rework-v1 Eric Auger (7): virtio-iommu: Fix error handling in virtio_iommu_set_host_iova_ranges() vfio-container-base: Introduce vfio_container_get_iova_ranges() helper HostIOMMUDevice : remove Error handle from get_iova_ranges callback HostIOMMUDevice: Introduce get_page_size_mask() callback virtio-iommu : Retrieve page size mask on virtio_iommu_set_iommu_device() memory: remove IOMMU MR iommu_set_page_size_mask() callback virtio-iommu: Revert transient enablement of IOMMU MR in bypass mode include/exec/memory.h | 38 -------- include/hw/vfio/vfio-container-base.h | 9 ++ include/sysemu/host_iommu_device.h | 11 ++- hw/vfio/common.c | 8 -- hw/vfio/container-base.c | 15 ++++ hw/vfio/container.c | 16 ++-- hw/vfio/iommufd.c | 21 +++-- hw/virtio/virtio-iommu.c | 121 +++++++++++++------------- system/memory.c | 13 --- hw/virtio/trace-events | 2 +- 10 files changed, 117 insertions(+), 137 deletions(-)