Really fast pass thru xml 24GB 1GB pages on 3950x host 2060 super

amazing-passthru-libvirt.xml

<domain type="kvm">
  <name>win11-2</name>
  <uuid>b9d2089e-cee2-49f2-9d03-295568130120</uuid>
  <title>Windows Guest</title>
  <metadata>
    <libosinfo:libosinfo xmlns:libosinfo="http://libosinfo.org/xmlns/libvirt/domain/1.0">
      <libosinfo:os id="http://microsoft.com/win/11"/>
    </libosinfo:libosinfo>
  </metadata>
  <memory unit="KiB">25165824</memory>
  <currentMemory unit="KiB">25165824</currentMemory>
  <memoryBacking>
    <hugepages/>
  </memoryBacking>
  <vcpu placement="static">8</vcpu>
  <cputune>
    <vcpupin vcpu="0" cpuset="8"/>
    <vcpupin vcpu="1" cpuset="9"/>
    <vcpupin vcpu="2" cpuset="10"/>
    <vcpupin vcpu="3" cpuset="11"/>
    <vcpupin vcpu="4" cpuset="12"/>
    <vcpupin vcpu="5" cpuset="13"/>
    <vcpupin vcpu="6" cpuset="14"/>
    <vcpupin vcpu="7" cpuset="15"/>
  </cputune>
  <os firmware="efi">
    <type arch="x86_64" machine="pc-q35-6.2">hvm</type>
    <smbios mode="host"/>
  </os>
  <features>
    <acpi/>
    <apic/>
    <hyperv mode="custom">
      <relaxed state="on"/>
      <vapic state="on"/>
      <spinlocks state="on" retries="8191"/>
      <vpindex state="on"/>
      <runtime state="on"/>
      <synic state="on"/>
      <stimer state="on"/>
      <frequencies state="on"/>
      <tlbflush state="on"/>
      <ipi state="on"/>
    </hyperv>
    <vmport state="off"/>
  </features>
  <cpu mode="custom" match="exact" check="none">
    <model fallback="allow">qemu64</model>
    <topology sockets="1" dies="1" cores="8" threads="1"/>
    <feature policy="require" name="bmi1"/>
    <feature policy="require" name="bmi2"/>
    <feature policy="require" name="ssse3"/>
    <feature policy="require" name="sse4.1"/>
    <feature policy="require" name="sse4.2"/>
    <feature policy="require" name="avx"/>
    <feature policy="require" name="avx2"/>
    <feature policy="require" name="xsave"/>
    <feature policy="require" name="xsaveopt"/>
    <feature policy="require" name="xsaves"/>
    <feature policy="require" name="umip"/>
    <feature policy="require" name="smap"/>
    <feature policy="require" name="smep"/>
    <feature policy="require" name="rdseed"/>
    <feature policy="require" name="rdrand"/>
    <feature policy="require" name="popcnt"/>
    <feature policy="require" name="fma"/>
    <feature policy="require" name="rdpid"/>
    <feature policy="require" name="aes"/>
    <feature policy="require" name="clflushopt"/>
    <feature policy="require" name="sha-ni"/>
    <feature policy="require" name="adx"/>
    <feature policy="require" name="fsgsbase"/>
    <feature policy="require" name="clzero"/>
    <feature policy="require" name="stibp"/>
    <feature policy="require" name="ssbd"/>
    <feature policy="require" name="ibpb"/>
    <feature policy="require" name="spec-ctrl"/>
    <feature policy="require" name="svm"/>
  </cpu>
  <clock offset="localtime">
    <timer name="rtc" tickpolicy="catchup"/>
    <timer name="pit" tickpolicy="delay"/>
    <timer name="hpet" present="no"/>
    <timer name="hypervclock" present="yes"/>
  </clock>
  <on_poweroff>destroy</on_poweroff>
  <on_reboot>restart</on_reboot>
  <on_crash>destroy</on_crash>
  <pm>
    <suspend-to-mem enabled="no"/>
    <suspend-to-disk enabled="no"/>
  </pm>
  <devices>
    <emulator>/usr/bin/qemu-system-x86_64</emulator>
    <disk type="file" device="cdrom">
      <driver name="qemu" type="raw"/>
      <source file="/var/local/vmiso/Win11_23H2_English_x64v2.iso"/>
      <target dev="sdb" bus="sata"/>
      <readonly/>
      <address type="drive" controller="0" bus="0" target="0" unit="1"/>
    </disk>
    <disk type="file" device="cdrom">
      <driver name="qemu" type="raw"/>
      <source file="/var/local/vmiso/virtio-win-0.1.217.iso"/>
      <target dev="sdd" bus="sata"/>
      <readonly/>
      <address type="drive" controller="0" bus="0" target="0" unit="3"/>
    </disk>
    <disk type="file" device="disk">
      <driver name="qemu" type="raw" cache="writethrough" discard="unmap"/>
      <source file="/var/lib/libvirt/images/win11-2.img"/>
      <target dev="sde" bus="sata"/>
      <boot order="1"/>
      <address type="drive" controller="0" bus="0" target="0" unit="4"/>
    </disk>
    <disk type="file" device="disk">
      <driver name="qemu" type="raw" cache="writethrough" discard="unmap"/>
      <source file="/var/lib/libvirt/images/win11-1.img"/>
      <target dev="sdf" bus="sata"/>
      <boot order="2"/>
      <address type="drive" controller="0" bus="0" target="0" unit="5"/>
    </disk>
    <disk type="file" device="disk">
      <driver name="qemu" type="raw" cache="writethrough" discard="unmap"/>
      <source file="/var/lib/libvirt/images/win11-g.img"/>
      <target dev="sdg" bus="sata"/>
      <boot order="3"/>
      <address type="drive" controller="1" bus="0" target="0" unit="0"/>
    </disk>
    <controller type="usb" index="0" model="qemu-xhci" ports="15">
      <address type="pci" domain="0x0000" bus="0x01" slot="0x00" function="0x0"/>
    </controller>
    <controller type="pci" index="0" model="pcie-root"/>
    <controller type="pci" index="1" model="pcie-root-port">
      <model name="pcie-root-port"/>
      <target chassis="1" port="0x8"/>
      <address type="pci" domain="0x0000" bus="0x00" slot="0x01" function="0x0" multifunction="on"/>
    </controller>
    <controller type="pci" index="2" model="pcie-root-port">
      <model name="pcie-root-port"/>
      <target chassis="2" port="0x9"/>
      <address type="pci" domain="0x0000" bus="0x00" slot="0x01" function="0x1"/>
    </controller>
    <controller type="pci" index="3" model="pcie-root-port">
      <model name="pcie-root-port"/>
      <target chassis="3" port="0xa"/>
      <address type="pci" domain="0x0000" bus="0x00" slot="0x01" function="0x2"/>
    </controller>
    <controller type="pci" index="4" model="pcie-root-port">
      <model name="pcie-root-port"/>
      <target chassis="4" port="0xb"/>
      <address type="pci" domain="0x0000" bus="0x00" slot="0x01" function="0x3"/>
    </controller>
    <controller type="pci" index="5" model="pcie-root-port">
      <model name="pcie-root-port"/>
      <target chassis="5" port="0xc"/>
      <address type="pci" domain="0x0000" bus="0x00" slot="0x01" function="0x4"/>
    </controller>
    <controller type="pci" index="6" model="pcie-root-port">
      <model name="pcie-root-port"/>
      <target chassis="6" port="0xd"/>
      <address type="pci" domain="0x0000" bus="0x00" slot="0x01" function="0x5"/>
    </controller>
    <controller type="pci" index="7" model="pcie-root-port">
      <model name="pcie-root-port"/>
      <target chassis="7" port="0xe"/>
      <address type="pci" domain="0x0000" bus="0x00" slot="0x01" function="0x6"/>
    </controller>
    <controller type="pci" index="8" model="pcie-root-port">
      <model name="pcie-root-port"/>
      <target chassis="8" port="0xf"/>
      <address type="pci" domain="0x0000" bus="0x00" slot="0x01" function="0x7"/>
    </controller>
    <controller type="pci" index="9" model="pcie-root-port">
      <model name="pcie-root-port"/>
      <target chassis="9" port="0x10"/>
      <address type="pci" domain="0x0000" bus="0x00" slot="0x02" function="0x0" multifunction="on"/>
    </controller>
    <controller type="pci" index="10" model="pcie-root-port">
      <model name="pcie-root-port"/>
      <target chassis="10" port="0x11"/>
      <address type="pci" domain="0x0000" bus="0x00" slot="0x02" function="0x1"/>
    </controller>
    <controller type="pci" index="11" model="pcie-root-port">
      <model name="pcie-root-port"/>
      <target chassis="11" port="0x12"/>
      <address type="pci" domain="0x0000" bus="0x00" slot="0x02" function="0x2"/>
    </controller>
    <controller type="pci" index="12" model="pcie-root-port">
      <model name="pcie-root-port"/>
      <target chassis="12" port="0x13"/>
      <address type="pci" domain="0x0000" bus="0x00" slot="0x02" function="0x3"/>
    </controller>
    <controller type="pci" index="13" model="pcie-root-port">
      <model name="pcie-root-port"/>
      <target chassis="13" port="0x14"/>
      <address type="pci" domain="0x0000" bus="0x00" slot="0x02" function="0x4"/>
    </controller>
    <controller type="pci" index="14" model="pcie-root-port">
      <model name="pcie-root-port"/>
      <target chassis="14" port="0x15"/>
      <address type="pci" domain="0x0000" bus="0x00" slot="0x02" function="0x5"/>
    </controller>
    <controller type="pci" index="15" model="pcie-root-port">
      <model name="pcie-root-port"/>
      <target chassis="15" port="0x16"/>
      <address type="pci" domain="0x0000" bus="0x00" slot="0x02" function="0x6"/>
    </controller>
    <controller type="pci" index="16" model="pcie-to-pci-bridge">
      <model name="pcie-pci-bridge"/>
      <address type="pci" domain="0x0000" bus="0x08" slot="0x00" function="0x0"/>
    </controller>
    <controller type="sata" index="0">
      <address type="pci" domain="0x0000" bus="0x00" slot="0x1f" function="0x2"/>
    </controller>
    <controller type="sata" index="1">
      <address type="pci" domain="0x0000" bus="0x10" slot="0x01" function="0x0"/>
    </controller>
    <controller type="virtio-serial" index="0">
      <address type="pci" domain="0x0000" bus="0x02" slot="0x00" function="0x0"/>
    </controller>
    <controller type="scsi" index="0" model="virtio-scsi">
      <address type="pci" domain="0x0000" bus="0x09" slot="0x00" function="0x0"/>
    </controller>
    <serial type="pty">
      <target type="isa-serial" port="0">
        <model name="isa-serial"/>
      </target>
    </serial>
    <console type="pty">
      <target type="serial" port="0"/>
    </console>
    <channel type="spicevmc">
      <target type="virtio" name="com.redhat.spice.0"/>
      <address type="virtio-serial" controller="0" bus="0" port="1"/>
    </channel>
    <input type="mouse" bus="ps2"/>
    <input type="keyboard" bus="ps2"/>
    <tpm model="tpm-crb">
      <backend type="emulator" version="2.0"/>
    </tpm>
    <audio id="1" type="spice"/>
    <video>
      <model type="none"/>
    </video>
    <hostdev mode="subsystem" type="pci" managed="yes">
      <source>
        <address domain="0x0000" bus="0x0a" slot="0x00" function="0x0"/>
      </source>
      <address type="pci" domain="0x0000" bus="0x03" slot="0x00" function="0x0"/>
    </hostdev>
    <hostdev mode="subsystem" type="pci" managed="yes">
      <source>
        <address domain="0x0000" bus="0x0a" slot="0x00" function="0x1"/>
      </source>
      <address type="pci" domain="0x0000" bus="0x04" slot="0x00" function="0x0"/>
    </hostdev>
    <hostdev mode="subsystem" type="pci" managed="yes">
      <source>
        <address domain="0x0000" bus="0x0a" slot="0x00" function="0x2"/>
      </source>
      <address type="pci" domain="0x0000" bus="0x05" slot="0x00" function="0x0"/>
    </hostdev>
    <hostdev mode="subsystem" type="pci" managed="yes">
      <source>
        <address domain="0x0000" bus="0x0a" slot="0x00" function="0x3"/>
      </source>
      <address type="pci" domain="0x0000" bus="0x06" slot="0x00" function="0x0"/>
    </hostdev>
    <hostdev mode="subsystem" type="usb" managed="yes">
      <source>
        <vendor id="0x2001"/>
        <product id="0x4a00"/>
      </source>
      <address type="usb" bus="0" port="1"/>
    </hostdev>
    <hostdev mode="subsystem" type="usb" managed="yes">
      <source>
        <vendor id="0x17f6"/>
        <product id="0x0862"/>
      </source>
      <address type="usb" bus="0" port="2"/>
    </hostdev>
    <hostdev mode="subsystem" type="usb" managed="yes">
      <source>
        <vendor id="0x046d"/>
        <product id="0xc069"/>
      </source>
      <address type="usb" bus="0" port="3"/>
    </hostdev>
    <redirdev bus="usb" type="spicevmc">
      <address type="usb" bus="0" port="5"/>
    </redirdev>
    <redirdev bus="usb" type="spicevmc">
      <address type="usb" bus="0" port="6"/>
    </redirdev>
    <memballoon model="virtio">
      <address type="pci" domain="0x0000" bus="0x07" slot="0x00" function="0x0"/>
    </memballoon>
  </devices>
</domain>