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[Qemu-devel] [Bug 1615823] Re: Windows 10 reports no compatible TPM foun
From: |
Kelvin Middleton |
Subject: |
[Qemu-devel] [Bug 1615823] Re: Windows 10 reports no compatible TPM found yet device manager shows it? |
Date: |
Tue, 20 Sep 2016 10:03:57 -0000 |
So I used the Windows Media Creation tool to generate a more recent ISO
which resulted in a date stamp of July-16. Using this Win10Pro image my
TPM is now recognised by the TPM Administrator, I re-tested my older ISO
in the same guest and this still had the problem so conclusive enough
for me.
Still using 2.7.0 git tag built from source tree
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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
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