Hi, I am new to GPU passthrough. Im able to create a VM now with GPU passthrough with 1 card (GTX960 ) but since i have additional card (GTX1060) i hope to use it with my host. The problem i have now is i have two GPU under the same IOMMU group and hope to split it with patching asc override 4.17 kernel from https://queuecumber.gitlab.io/linux-acs-override/ . But it still appear under the same group after patching.
Specs:
intel core i5 7600k
Asus Z270-A Prime
24GB DDR4 RAM
IntelHD Graphic (Host for now)
GTX960 (Guest)
GTX1060 (Guest)
Ubuntu Desktop 18.04.1 LTS
After patching, i updated /etc/default/grub and update-grub with
GRUB_CMDLINE_LINUX_DEFAULT=“quiet splash intel_iommu=on pcie_acs_override=downstream,multifunction”
[IOMMU 0] 00:00.0 Host bridge [0600]: Intel Corporation Intel Kaby Lake Host Bridge [8086:591f] (rev 05)
[IOMMU 10] 00:1f.0 ISA bridge [0601]: Intel Corporation 200 Series PCH LPC Controller (Z270) [8086:a2c5]
[IOMMU 10] 00:1f.2 Memory controller [0580]: Intel Corporation 200 Series PCH PMC [8086:a2a1]
[IOMMU 10] 00:1f.3 Audio device [0403]: Intel Corporation 200 Series PCH HD Audio [8086:a2f0]
[IOMMU 10] 00:1f.4 SMBus [0c05]: Intel Corporation 200 Series PCH SMBus Controller [8086:a2a3]
[IOMMU 11] 00:1f.6 Ethernet controller [0200]: Intel Corporation Ethernet Connection (2) I219-V [8086:15b8]
[IOMMU 12] 05:00.0 USB controller [0c03]: ASMedia Technology Inc. Device [1b21:2142]
[IOMMU 13] 06:00.0 Non-Volatile memory controller [0108]: Samsung Electronics Co Ltd Device [144d:a808]
[IOMMU 1] 00:01.0 PCI bridge [0604]: Intel Corporation Skylake PCIe Controller (x16) [8086:1901] (rev 05)
[IOMMU 1] 00:01.1 PCI bridge [0604]: Intel Corporation Skylake PCIe Controller (x8) [8086:1905] (rev 05)
[IOMMU 1] 01:00.0 VGA compatible controller [0300]: NVIDIA Corporation GM206 [GeForce GTX 960] [10de:1401] (rev a1)
[IOMMU 1] 01:00.1 Audio device [0403]: NVIDIA Corporation Device [10de:0fba] (rev a1)
[IOMMU 1] 02:00.0 VGA compatible controller [0300]: NVIDIA Corporation GP104 [GeForce GTX 1060 3GB] [10de:1b84] (rev a1)
[IOMMU 1] 02:00.1 Audio device [0403]: NVIDIA Corporation GP104 High Definition Audio Controller [10de:10f0] (rev a1)
[IOMMU 2] 00:02.0 VGA compatible controller [0300]: Intel Corporation HD Graphics 630 [8086:5912] (rev 04)
[IOMMU 3] 00:14.0 USB controller [0c03]: Intel Corporation 200 Series PCH USB 3.0 xHCI Controller [8086:a2af]
[IOMMU 4] 00:16.0 Communication controller [0780]: Intel Corporation 200 Series PCH CSME HECI #1 [8086:a2ba]
[IOMMU 5] 00:17.0 RAID bus controller [0104]: Intel Corporation SATA Controller [RAID mode] [8086:2822]
[IOMMU 6] 00:1b.0 PCI bridge [0604]: Intel Corporation 200 Series PCH PCI Express Root Port #17 [8086:a2e7] (rev f0)
[IOMMU 7] 00:1c.0 PCI bridge [0604]: Intel Corporation 200 Series PCH PCI Express Root Port #1 [8086:a290] (rev f0)
[IOMMU 8] 00:1c.4 PCI bridge [0604]: Intel Corporation 200 Series PCH PCI Express Root Port #5 [8086:a294] (rev f0)
[IOMMU 9] 00:1d.0 PCI bridge [0604]: Intel Corporation 200 Series PCH PCI Express Root Port #9 [8086:a298] (rev f0)
From above output you can see that both GTX 950 and GTX 1060 are under the same group. I have isolate both card with pci-stub before patching the kernel. Will this be an issues?
01:00.0 VGA compatible controller: NVIDIA Corporation GM206 [GeForce GTX 960] (rev a1)
Subsystem: ZOTAC International (MCO) Ltd. GM206 [GeForce GTX 960]
Kernel driver in use: pci-stub
Kernel modules: nvidiafb, nouveau
01:00.1 Audio device: NVIDIA Corporation Device 0fba (rev a1)
Subsystem: ZOTAC International (MCO) Ltd. Device 1376
Kernel driver in use: pci-stub
Kernel modules: snd_hda_intel
02:00.0 VGA compatible controller: NVIDIA Corporation GP104 [GeForce GTX 1060 3GB] (rev a1)
Subsystem: NVIDIA Corporation GP104 [GeForce GTX 1060 3GB]
Kernel driver in use: pci-stub
Kernel modules: nvidiafb, nouveau
02:00.1 Audio device: NVIDIA Corporation GP104 High Definition Audio Controller (rev a1)
Subsystem: NVIDIA Corporation GP104 High Definition Audio Controller
Kernel driver in use: pci-stub
Kernel modules: snd_hda_intel