On Mon, Jun 30, 2025 at 02:17:11PM +0800, 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
FYI when I have a guest crash libvirt logs
error : qemuMonitorJSONGuestPanicExtractInfo:638 : internal error: unknown panic info
type 'tdx'
this is a new type of panic data structure from upstream QEMU
that libvirt needs to handle in some way
With regards,
Daniel
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