Re: [PATCH v4 00/23] LIBVIRT: X86: TDX support
On Thu, Jul 10, 2025 at 03:21:02AM -0400, Zhenzhong Duan wrote:
Hi,
This series brings libvirt the x86 TDX support.
* What's TDX?
TDX stands for Trust Domain Extensions which isolates VMs from
the virtual-machine manager (VMM)/hypervisor and any other software on
the platform.
This patchset extends libvirt to support TDX, with which one can start a TDX
guest from high level rather than running qemu directly.
* Misc
As QEMU use a software emulated way to reset guest which isn't supported by TDX
guest for security reason. We simulate reboot for TDX guest by kill and create a
new one in FakeReboot framework.
Complete code can be found at [1].
* Test
Tested with upstream qemu v10.0.0-1724-gf9a3def17b
shutdown/reboot/reset with virsh
shutdown/reboot trigger in guest
shutdown with on_poweroff=destroy/restart
reboot with on_reboot=destroy/restart
GUEST_PANICKED event processing
auto firmware matching
For the whole series
Tested-by: Daniel P. Berrangé <berrange(a)redhat.com>
I've created a VM using
virt-install \
--graphics none \
--import \
--file /var/lib/libvirt/images/f42tdxalt.qcow2 \
--memory 4096 \
--launchSecurity=tdx,quoteGenerationService=on \
--boot uefi \
--machine q35 \
--osinfo fedora41
relying on this
https://github.com/virt-manager/virt-manager/pull/948
and acquired attestation report with SGX 2.26, QEMU current git master, and
upstream LKML (with the patch to enable to build with kexec)
With regards,
Daniel
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