Hi, all.
This patch adds Arm CCA support to QEMU driver for aarch64 system.
CCA is an abbreviation for Arm Confidential Compute Architecture
feature, it enhances the virtualization capabilities of
the platform by separating the management of resources from access
to those resources.
We are not yet at the stage where we can merge this patch as host
Linux/QEMU support is not yet merged, but I would like to receive
reviews and comments on the overall direction.
Changes in v5:
- Changed the target QEMU binary (Linaro's CCA/v10 version with added
QMP functionality)
- Changed the following changes to the CCA QMP command definitions:
- QMP command name: query-rme-guest-capabilities
- CCA capabilities info
- Add ARM CCA support to firmware feature.
[summary]
At this stage, all you can do is getting the CCA capability with
the virsh domcapabilities command and start the CCA VM with
the virsh create command.
capability info uses QEMU QMP to query QEMU options. The option
that exists now is for selecting a hash algorithm.
QEMU QMP sections currently only contains a single member, but
is wrapped in sections for expansion.
[Capability example]
Execution results of 'virsh domcapability" on QEMU
<domaincapabilities>
...
<features>
...
</sgx>
<cca supported='yes'>
<enum name='measurement-algo'>
<value>sha256</value>
<value>sha512</value>
</enum>
</cca>
<hyperv supported='yes'>
...
</features>
</domaincapabilities>
[XML example]
<domain>
...
<launchsecurity type='cca'>
<measurement-algo>sha256</measurement-algo>
</launchsecurity>
...
</domain>
[limitations/tests]
To obtain capability info, it is necessary to support the QEMU QMP
command, (See "[software version]"below).
The JSON file for the CCA firmware feature has not yet been provided by
the distributor. For CCA support, the equivalent of the following JSON
file must be placed in /usr/share/qemu:
tests/qemufirmwaredata/usr/share/qemu/firmware/50-edk2-aarch64-armcca.json
We have confirmed that the added tests (qemucapabilitiestest,
domaincapstest and qemuxmlconftest) and the CCA VM startup test
(starting the CCA VM from the virsh create command) passed.
The "personalization-value" and "measurement-log" parameters that
exist in the current Linaro QEMU cca/latest branch will not be
specified as CCA VM startup parameters with the virsh create
command.
[software version]
I followed the steps in Linaro's blog below.
https://linaro.atlassian.net/wiki/spaces/QEMU/pages/29051027459/Building+an+RME+stack+for+QEMU#Launching-a-Realm-guest-using-QEMU
The QEMU used was enhanced with CCA QMP command and found at:
https://gitlab.com/Linaro/dcap/qemu/-/commits/cca/latest
RFC v1:
https://lists.libvirt.org/archives/list/[email protected]/thread/V4S5657DIO5IYTFSGJLXJ7SM4RCEQQJE/#V4S5657DIO5IYTFSGJLXJ7SM4RCEQQJE
RFC v2:
https://lists.libvirt.org/archives/list/[email protected]/message/5VZV4RGZHJAKKRA6LX36AXD52YL2TN2I/
RFC v3:
https://lists.libvirt.org/archives/list/[email protected]/thread/LLWAPRWXNHYOGE5CKACPHPXOTBGRJN35/
RFC v4
https://lists.libvirt.org/archives/list/[email protected]/thread/3WAWMHMD2CRVNOROKQP4JBWKQ6MVQEQ6/
Signed-off-by: Kazuhiro Abe [email protected]
Akio Kakuno (3):
src: Add ARM CCA support in qemu driver to launch VM
src: Add ARM CCA support in domain capabilities command
src: Add ARM CCA support in domain schema
Kazuhiro Abe (2):
src: Add ARM CCA support in firmware feature
tests: Adds Arm CCA support
docs/formatdomain.rst | 46 +
docs/formatdomaincaps.rst | 27 +-
src/conf/domain_capabilities.c | 48 +
src/conf/domain_capabilities.h | 12 +
src/conf/domain_conf.c | 25 +
src/conf/domain_conf.h | 9 +
src/conf/domain_validate.c | 1 +
src/conf/schemas/domaincaps.rng | 36 +
src/conf/schemas/domaincommon.rng | 26 +
src/conf/virconftypes.h | 2 +
src/libvirt_private.syms | 1 +
src/qemu/qemu_capabilities.c | 146 +
src/qemu/qemu_capabilities.h | 4 +
src/qemu/qemu_cgroup.c | 2 +
src/qemu/qemu_command.c | 30 +
src/qemu/qemu_driver.c | 2 +
src/qemu/qemu_firmware.c | 18 +
src/qemu/qemu_monitor.c | 10 +
src/qemu/qemu_monitor.h | 3 +
src/qemu/qemu_monitor_json.c | 111 +
src/qemu/qemu_monitor_json.h | 4 +
src/qemu/qemu_namespace.c | 2 +
src/qemu/qemu_process.c | 4 +
src/qemu/qemu_validate.c | 4 +
src/security/security_dac.c | 2 +
.../qemu_10.1.0-virt.aarch64+armrme.xml | 250 +
.../qemu_10.1.0.aarch64+armrme.xml | 250 +
tests/qemucapabilitiesdata/README.rst | 5 +
.../caps_10.1.0_aarch64+armrme.replies | 37727 ++++++++++++++++
.../caps_10.1.0_aarch64+armrme.xml | 518 +
.../qemu/firmware/50-edk2-aarch64-armcca.json | 24 +
tests/qemufirmwaretest.c | 3 +
...ch-security-cca.aarch64-latest+armrme.args | 30 +
...nch-security-cca.aarch64-latest+armrme.xml | 24 +
tests/qemuxmlconfdata/launch-security-cca.xml | 16 +
tests/qemuxmlconftest.c | 2 +
36 files changed, 39423 insertions(+), 1 deletion(-)
create mode 100644 tests/domaincapsdata/qemu_10.1.0-virt.aarch64+armrme.xml
create mode 100644 tests/domaincapsdata/qemu_10.1.0.aarch64+armrme.xml
create mode 100644
tests/qemucapabilitiesdata/caps_10.1.0_aarch64+armrme.replies
create mode 100644 tests/qemucapabilitiesdata/caps_10.1.0_aarch64+armrme.xml
create mode 100644
tests/qemufirmwaredata/usr/share/qemu/firmware/50-edk2-aarch64-armcca.json
create mode 100644
tests/qemuxmlconfdata/launch-security-cca.aarch64-latest+armrme.args
create mode 100644
tests/qemuxmlconfdata/launch-security-cca.aarch64-latest+armrme.xml
create mode 100644 tests/qemuxmlconfdata/launch-security-cca.xml
--
2.43.0
