AAAAA

[cd /etc/libvirt/hooks
tree]
.
├── kvm.conf
├── qemu
└── qemu.d
    └── win10
        ├── prepare
        │   └── begin
        │       └── start.sh
        └── release
            └── end
                └── revert.sh




[nano /etc/libvirt/hooks/qemu.d/win10/prepare/begin/start.sh]
# debugging
set -x

# load variables we defined
source "/etc/libvirt/hooks/kvm.conf"

# stop display manager
systemctl stop sddm.service

# Unbind VTconsoles
echo 0 > /sys/class/vtconsole/vtcon0/bind
echo 0 > /sys/class/vtconsole/vtcon1/bind

# Unbind EFI-framebuffer
echo efi-framebuffer.0 > /sys/bus/platform/drivers/efi-framebuffer/unbind

# Avoid race condition
sleep 10

# Unload Nvidia
modprobe -r nvidia_drm
modprobe -r nvidia_modeset
modprobe -r drm_kms_helper
modprobe -r nvidia
modprobe -r i2c_nvidia_gpu
modprobe -r drm
modprobe -r nvidia_uvm

# unbind gpu
virsh nodedev-detach $VIRSH_GPU_VIDEO

# load vfio
modprobe vfio
modprobe vfio_pci
modprobe vfio_iommu_type1




[nano /etc/libvirt/hooks/qemu.d/win10/release/end/revert.sh]
# Debug
set -x

# Load variables
source "/etc/libvirt/hooks/kvm.conf"

# unload vfio-pci
modprobe -r vfio_pci
modprobe -r vfio_iommu_type1
modprobe -r vfio

# Rebind GPU
virsh nodedev-reattach $VIRSH_GPU_VIDEO

# rebind VTconsoles
echo 1 > /sys/class/vtconsole/vtcon0/bind
echo 0 > /sys/class/vtconsole/vtcon1/bind

# Read nvidia x config
nvidia-xconfig --query-gpu-info > /dev/null 2>&1

# Bind EFI-framebuffer
echo "efi-framebuffer.0" > /sys/bus/platform/drivers/efi-framebuffer/bind

# load nvidia
modprobe nvidia_drm
modprobe nvidia_modeset
modprobe drm_kms_helper
modprobe nvidia
modprobe drm
modprobe nvidia_uvm

# Restart Display service
systemctl start sddm.service



[nano /etc/libvirt/hooks/kvm.conf]
VIRSH_GPU_VIDEO=pci_0000_01_00_0



[sudo dmesg | grep -i -e DMAR -e IOMMU]
[    0.000000] Command line: BOOT_IMAGE=/boot/vmlinuz-6.14-x86_64 root=UUID=1d8ab096-a02e-44ba-8b24-ab5827c0c53c rw quiet splash resume=UUID=ca483a09-0317-4cf7-a875-cafb5e3446ed udev.log_priority=3 iommu=pt intel_iommu=on
[    0.010245] ACPI: DMAR 0x0000000067A55000 000088 (v02 GBT    GBTUACPI 00000002 ACPI 00040000)
[    0.010299] ACPI: Reserving DMAR table memory at [mem 0x67a55000-0x67a55087]
[    0.065127] Kernel command line: BOOT_IMAGE=/boot/vmlinuz-6.14-x86_64 root=UUID=1d8ab096-a02e-44ba-8b24-ab5827c0c53c rw quiet splash resume=UUID=ca483a09-0317-4cf7-a875-cafb5e3446ed udev.log_priority=3 iommu=pt intel_iommu=on
[    0.065230] DMAR: IOMMU enabled
[    0.168499] DMAR: Host address width 39
[    0.168500] DMAR: DRHD base: 0x000000fed90000 flags: 0x0
[    0.168506] DMAR: dmar0: reg_base_addr fed90000 ver 4:0 cap 1c0000c40660462 ecap 29a00f0505e
[    0.168508] DMAR: DRHD base: 0x000000fed91000 flags: 0x1
[    0.168513] DMAR: dmar1: reg_base_addr fed91000 ver 5:0 cap d2008c40660462 ecap f050da
[    0.168515] DMAR: RMRR base: 0x00000070000000 end: 0x000000747fffff
[    0.168518] DMAR-IR: IOAPIC id 2 under DRHD base  0xfed91000 IOMMU 1
[    0.168520] DMAR-IR: HPET id 0 under DRHD base 0xfed91000
[    0.168521] DMAR-IR: Queued invalidation will be enabled to support x2apic and Intr-remapping.
[    0.170441] DMAR-IR: Enabled IRQ remapping in x2apic mode
[    0.446821] pci 0000:00:02.0: DMAR: Skip IOMMU disabling for graphics
[    0.463852] iommu: Default domain type: Passthrough (set via kernel command line)
[    0.521216] DMAR: No ATSR found
[    0.521217] DMAR: No SATC found
[    0.521218] DMAR: dmar0: Using Queued invalidation
[    0.521222] DMAR: dmar1: Using Queued invalidation
[    0.521505] pci 0000:00:02.0: Adding to iommu group 0
[    0.521538] pci 0000:00:00.0: Adding to iommu group 1
[    0.521549] pci 0000:00:01.0: Adding to iommu group 2
[    0.521558] pci 0000:00:04.0: Adding to iommu group 3
[    0.521571] pci 0000:00:06.0: Adding to iommu group 4
[    0.521580] pci 0000:00:08.0: Adding to iommu group 5
[    0.521588] pci 0000:00:0a.0: Adding to iommu group 6
[    0.521602] pci 0000:00:0d.0: Adding to iommu group 7
[    0.521612] pci 0000:00:0e.0: Adding to iommu group 8
[    0.521627] pci 0000:00:14.0: Adding to iommu group 9
[    0.521635] pci 0000:00:14.2: Adding to iommu group 9
[    0.521645] pci 0000:00:14.3: Adding to iommu group 10
[    0.521658] pci 0000:00:15.0: Adding to iommu group 11
[    0.521670] pci 0000:00:16.0: Adding to iommu group 12
[    0.521681] pci 0000:00:17.0: Adding to iommu group 13
[    0.521694] pci 0000:00:1d.0: Adding to iommu group 14
[    0.521705] pci 0000:00:1d.2: Adding to iommu group 15
[    0.521727] pci 0000:00:1f.0: Adding to iommu group 16
[    0.521737] pci 0000:00:1f.3: Adding to iommu group 16
[    0.521746] pci 0000:00:1f.4: Adding to iommu group 16
[    0.521755] pci 0000:00:1f.5: Adding to iommu group 16
[    0.521771] pci 0000:01:00.0: Adding to iommu group 17
[    0.521784] pci 0000:02:00.0: Adding to iommu group 18
[    0.521799] pci 0000:03:00.0: Adding to iommu group 19
[    0.521959] DMAR: Intel(R) Virtualization Technology for Directed I/O
[    0.879971] pci 10000:e0:06.0: Adding to iommu group 8
[    0.880150] pci 10000:e0:17.0: Adding to iommu group 8
[    0.880370] pci 10000:e1:00.0: Adding to iommu group 8