|From:||Pandey, Prabhat Chand|
|Subject:||Passthrough device to QEMU without IOMMU split|
|Date:||Thu, 23 Jan 2020 04:38:57 +0000|
I have 3 PCIe Endpoint devices, all are fall in the same IOMMU group.
I am using vfio-pci to passthrough PCIe devices, and QEMU version 4.2.
What I understood that if I wants to passthrough any devices, I need to bind all the devices
fall under the same IOMMU group to the vfio-pci, then only I will be able to launch QEMU.
I am able to passthrough all the 3 devices to the guest OS using below steps:
But I just want to passthrough only 1 out of 3 devices from the same IOMMU group.
I have found 1 solution, i.e. split devices into multiple IOMMU group is solving this problem, below is the patch I used:
Now my question, Is there any other way to passthrough 1 devices out of 3 PCIe devices which all are there in a same IOMMU group, without splitting IOMMU group?
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