2:55 a.m.
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.
To support TDX, multiple software components, not only KVM but also QEMU,
guest Linux and virtual bios, need to be updated. For more details, please
check link[1], there are TDX spec links and public repository link at github
for each software component.
This patchset is another software component to extend libvirt to support TDX,
with which one can start a VM 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 add a new way to emulate the reset for TDX guest,
called "hard reboot". We achieve this by killing old qemu and start a new one.
Complete code can be found at [1], matching qemu code can be found at [2].
There are some new properties for tdx-guest object, i.e. `mrconfigid`, `mrowner`,
`mrownerconfig` and `debug` which aren't in matching qemu[2] yet. I keep them
intentionally as they will be implemented in qemu as extention series of [2].
* Test
start/stop/reboot with virsh
stop/reboot trigger in guest
stop with on_poweroff=destroy/restart
reboot with on_reboot=destroy/restart
* Patch organization
- patch 1-3: Support query of TDX capabilities.
- patch 4-6: Add TDX type to launchsecurity framework.
- patch 7-11: Add hard reboot support to TDX guest
[1] https://github.com/intel/libvirt-tdx/commits/tdx_for_upstream_rfcv3
[2] https://github.com/intel/qemu-tdx/tree/tdx-qemu-upstream-v3
Thanks
Zhenzhong
Changelog:
rfcv3:
- Change to generate qemu cmdline with -bios
- drop firmware auto match as -bios is used
- add a hard reboot method to reboot TDX guest
rfcv2:
- give up using qmp cmd and check TDX directly on host for TDX capabilities.
- use launchsecurity framework to support TDX
- use <os>.<loader> for general loader
- add auto firmware match feature for TDX
A example TDVF fimware description file 70-edk2-x86_64-tdx.json:
{
"description": "UEFI firmware for x86_64, supporting Intel TDX",
"interface-types": [
"uefi"
],
"mapping": {
"device": "generic",
"filename": "/usr/share/OVMF/OVMF_CODE-tdx.fd"
},
"targets": [
{
"architecture": "x86_64",
"machines": [
"pc-q35-*"
]
}
],
"features": [
"intel-tdx",
"verbose-dynamic"
],
"tags": [
]
}
rfcv2:
https://www.mail-archive.com/libvir-list@redhat.com/msg219378.html
Chenyi Qiang (3):
qemu: add hard reboot in QEMU driver
qemu: make hard reboot as the TDX default reboot mode
virsh: add new option "timekeep" to keep virsh console alive
Zhenzhong Duan (8):
qemu: Check if INTEL Trust Domain Extention support is enabled
qemu: Add TDX capability
conf: expose TDX feature in domain capabilities
conf: add tdx as launch security type
qemu: Add command line and validation for TDX type
qemu: force special parameters enabled for TDX guest
qemu: Extend hard reboot in Qemu driver
conf: Add support to keep same domid for hard reboot
docs/formatdomaincaps.rst | 1 +
include/libvirt/libvirt-domain.h | 2 +
src/conf/domain_capabilities.c | 1 +
src/conf/domain_capabilities.h | 1 +
src/conf/domain_conf.c | 50 ++++++++++++++++
src/conf/domain_conf.h | 11 ++++
src/conf/schemas/domaincaps.rng | 9 +++
src/conf/schemas/domaincommon.rng | 34 +++++++++++
src/conf/virconftypes.h | 2 +
src/qemu/qemu_capabilities.c | 38 +++++++++++-
src/qemu/qemu_capabilities.h | 1 +
src/qemu/qemu_command.c | 29 +++++++++
src/qemu/qemu_domain.c | 18 ++++++
src/qemu/qemu_domain.h | 4 ++
src/qemu/qemu_driver.c | 85 ++++++++++++++++++++------
src/qemu/qemu_firmware.c | 1 +
src/qemu/qemu_monitor.c | 19 +++++-
src/qemu/qemu_monitor.h | 2 +-
src/qemu/qemu_monitor_json.c | 6 +-
src/qemu/qemu_namespace.c | 1 +
src/qemu/qemu_process.c | 99 ++++++++++++++++++++++++++++++-
src/qemu/qemu_validate.c | 18 ++++++
tools/virsh-console.c | 3 +
tools/virsh-domain.c | 64 +++++++++++++++-----
tools/virsh.h | 1 +
25 files changed, 463 insertions(+), 37 deletions(-)
--
2.34.1