My laptop has a TPM 1.2 chip made by IFX (dmesg: tpm_tis 00:07: 1.2 TPM (device-id 0x1B, rev-id 16))
I couldn't get it to work in libvirt (I am running ubuntu 17.04) until I upgraded my Windows 10 to version 1607. I needed to change the CPU to "core2duo" first before I could apply the version 1607 patch (if you don't do that, you can never apply the patch). After applying this Windows patch, Windows can detect and use the TPM device assigned to it successfully. -- You received this bug notification because you are a member of qemu- devel-ml, which is subscribed to QEMU. https://bugs.launchpad.net/bugs/1615823 Title: Windows 10 reports no compatible TPM found yet device manager shows it? Status in QEMU: New Bug description: Ubuntu 16.04 with stock kvm, libvirt, ovmf Qemu 2.5 installed from stock ubuntu ppa Qemu 2.6.1 built from tarball. Qemu 2.7.0-rc4 built from tarball. Windows 10 guest reports a TPM device is installed and the driver functional under Device Manager-->Security Devices. TPM Administrator however advises no compatible TPM chip can be found. Qemu 2.5 is buggy and prevents the guest loading the TPM driver, this was addressed by http://git.qemu.org/?p=qemu.git;a=commit;h=2b1c2e8e5f1990f0a201a8cbf9d366fca60f4aa8 Have tested the below cmd out on both qemu-2.6.1 and qemu-2.7.0-rc4, both suffer the same problem. My TPM is most certainly compatible as installing Win10Pro onto the same host as bare metal provides me the desired and expected functionality aka Bitlocker and TPM Administrator work. sudo ./qemu-system-x86_64 \ -enable-kvm \ -machine q35 \ -cpu host \ -m 4096 \ -smp 4,sockets=1,cores=2,threads=2 \ -device i82801b11-bridge,id=pci.1,bus=pcie.0,addr=0x1e \ -device pci-bridge,chassis_nr=2,id=pci.2,bus=pci.1,addr=0x1 \ -device qxl-vga,id=video0,ram_size=67108864,vram_size=67108864,vgamem_mb=16,bus=pcie.0,addr=0x2 \ -drive file=/usr/share/qemu/OVMF.fd,if=pflash,format=raw,unit=0,readonly=on \ -drive file=/mnt/120GB_SSD/wintpm_VARS.fd,if=pflash,format=raw,unit=1 \ -drive file=/mnt/120GB_SSD/wintpm.qcow2,format=qcow2,if=none,id=drive-virtio-disk0 \ -device virtio-blk-pci,scsi=off,bus=pci.2,addr=0x3,drive=drive-virtio-disk0,id=virtio-disk0,bootindex=2 \ -drive file="/mnt/share/Filestorage/Images/Microsoft Windows 10 Pro x64.iso",format=raw,if=none,media=cdrom,id=drive-sata0-0-0,readonly=on \ -device ide-cd,bus=ide.0,drive=drive-sata0-0-0,id=sata0-0-0 \ -drive file=/mnt/share/Filestorage/Images/virtio-win-0.1.117.iso,format=raw,if=none,media=cdrom,id=drive-sata0-0-1,readonly=on \ -device ide-cd,bus=ide.1,drive=drive-sata0-0-1,id=sata0-0-1 \ -tpmdev passthrough,id=tpm-tpm0,path=/dev/tpm0,cancel-path=/sys/class/tpm/tpm0/device/cancel \ -device tpm-tis,tpmdev=tpm-tpm0,id=tpm0 To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1615823/+subscriptions
