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vmm: Add iommu=on|off option for --disk

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Having the virtual IOMMU created with --iommu is one thing, but we also
need a way to decide if a virtio-blk device should be attached to this
virtual IOMMU or not. That's why we introduce an extra option "iommu"
with the value "on" or "off". By default, the device is not attached,
which means "iommu=off".

One side effect of this new option is that we had to introduce a new
option for the disk path, simply called "path=".

Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
This commit is contained in:
Sebastien Boeuf 2019-10-02 14:01:36 -07:00 • committed by Samuel Ortiz
parent 6e0aa56f06
commit 4b8d7e718d
10 changed files with 297 additions and 249 deletions
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test_data/cloud-init/clear/openstack/latest/user_data
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@ -53,4 +53,4 @@ write_files:
bash -c "echo 0000:00:03.0 > /sys/bus/pci/devices/0000\:00\:03.0/driver/unbind"
bash -c "echo 1af4 1041 > /sys/bus/pci/drivers/vfio-pci/new_id"
/mnt/cloud-hypervisor --console off --serial tty --kernel /mnt/vmlinux --cmdline "console=ttyS0 reboot=k panic=1 nomodules i8042.noaux i8042.nomux i8042.nopnp i8042.dumbkbd root=/dev/vda2 VFIOTAG" --disk /mnt/clear-cloudguest.img /mnt/cloudinit.img --cpus 1 --memory size=512M --rng --device /sys/bus/pci/devices/0000:00:03.0/
/mnt/cloud-hypervisor --console off --serial tty --kernel /mnt/vmlinux --cmdline "console=ttyS0 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 /sys/bus/pci/devices/0000:00:03.0/