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vmm: Build and set the list of external mappings for VFIO

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When VFIO devices are created and if the device is attached to the
virtual IOMMU, the ExternalDmaMapping trait implementation is created
and associated with the device. The idea is to build a hash map of
device IDs with their associated trait implementation.

This hash map is provided to the virtual IOMMU device so that it knows
how to properly trigger external mappings associated with VFIO devices.

Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
This commit is contained in:
Sebastien Boeuf
2019-10-07 22:05:08 -07:00
committed by Samuel Ortiz
parent c65ead5de8
commit 63c30a6e79
3 changed files with 44 additions and 40 deletions
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4
test_data/cloud-init/clear/openstack/latest/user_data
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@@ -48,7 +48,7 @@ write_files:
#!/bin/bash
mount -t virtio_fs virtiofs /mnt -o rootmode=040000,user_id=0,group_id=0,dax
bash -c "echo 0000:00:06.0 > /sys/bus/pci/devices/0000\:00\:06.0/driver/unbind"
bash -c "echo 0000:00:05.0 > /sys/bus/pci/devices/0000\:00\:05.0/driver/unbind"
bash -c "echo 1af4 1041 > /sys/bus/pci/drivers/vfio-pci/new_id"
/mnt/cloud-hypervisor --kernel /mnt/vmlinux --cmdline "console=hvc0 reboot=k panic=1 nomodules i8042.noaux i8042.nomux i8042.nopnp i8042.dumbkbd root=/dev/vda2 VFIOTAG" --disk path=/mnt/clear-cloudguest.img path=/mnt/cloudinit.img --cpus 1 --memory size=512M --rng --device path=/sys/bus/pci/devices/0000:00:06.0/
/mnt/cloud-hypervisor --kernel /mnt/vmlinux --cmdline "console=hvc0 reboot=k panic=1 nomodules i8042.noaux i8042.nomux i8042.nopnp i8042.dumbkbd root=/dev/vda2 VFIOTAG" --disk path=/mnt/clear-cloudguest.img path=/mnt/cloudinit.img --cpus 1 --memory size=512M --rng --device path=/sys/bus/pci/devices/0000:00:05.0/