The capabilities reporting merged for TDX was flawed because
it would always report TDX as supported simply if QEMU was
new enough to have 'tdx-guest'.
IOW, all x86 hosts currently report 'tdx' as fully supported
which is a regression for AMD hosts, as we're now reporting
incorrect data there which can confuse mgmt apps.
Unfortunately the 'query-tdx-capabilities' QMP command that
was in early postings:
https://mail.gnu.org/archive/html/qemu-devel/2021-07/msg01689.html
went missing and I'm not seeing an alternative way to query
QEMU to see if TDX is actually launchable. So in these patches
I open /dev/kvm and directly ask of the 'TDX' VM type is
supported by KVM, which IIUC is equivalent to waht the original
'query-tdx-capabilities' patch was doing.
Daniel P. Berrangé (2):
qemu: correctly detect working TDX support
qemu: always report TDX feature caps on x86
src/qemu/qemu_capabilities.c | 71 +++++++++++++++++--
src/qemu/qemu_capabilities.h | 3 +
.../qemu_10.0.0-q35.x86_64+amdsev.xml | 1 +
.../domaincapsdata/qemu_10.0.0-q35.x86_64.xml | 1 +
.../qemu_10.0.0-tcg.x86_64+amdsev.xml | 1 +
.../domaincapsdata/qemu_10.0.0-tcg.x86_64.xml | 1 +
.../qemu_10.0.0.x86_64+amdsev.xml | 1 +
tests/domaincapsdata/qemu_10.0.0.x86_64.xml | 1 +
.../qemu_10.1.0-tcg.x86_64+inteltdx.xml | 1 +
.../domaincapsdata/qemu_10.1.0-tcg.x86_64.xml | 1 +
.../domaincapsdata/qemu_10.2.0-tcg.x86_64.xml | 1 +
.../domaincapsdata/qemu_6.2.0-q35.x86_64.xml | 1 +
.../domaincapsdata/qemu_6.2.0-tcg.x86_64.xml | 1 +
tests/domaincapsdata/qemu_6.2.0.x86_64.xml | 1 +
.../domaincapsdata/qemu_7.0.0-q35.x86_64.xml | 1 +
.../domaincapsdata/qemu_7.0.0-tcg.x86_64.xml | 1 +
tests/domaincapsdata/qemu_7.0.0.x86_64.xml | 1 +
.../domaincapsdata/qemu_7.1.0-q35.x86_64.xml | 1 +
.../domaincapsdata/qemu_7.1.0-tcg.x86_64.xml | 1 +
tests/domaincapsdata/qemu_7.1.0.x86_64.xml | 1 +
.../qemu_7.2.0-hvf.x86_64+hvf.xml | 1 +
.../domaincapsdata/qemu_7.2.0-q35.x86_64.xml | 1 +
.../qemu_7.2.0-tcg.x86_64+hvf.xml | 1 +
.../domaincapsdata/qemu_7.2.0-tcg.x86_64.xml | 1 +
tests/domaincapsdata/qemu_7.2.0.x86_64.xml | 1 +
.../domaincapsdata/qemu_8.0.0-q35.x86_64.xml | 1 +
.../domaincapsdata/qemu_8.0.0-tcg.x86_64.xml | 1 +
tests/domaincapsdata/qemu_8.0.0.x86_64.xml | 1 +
.../domaincapsdata/qemu_8.1.0-q35.x86_64.xml | 1 +
.../domaincapsdata/qemu_8.1.0-tcg.x86_64.xml | 1 +
tests/domaincapsdata/qemu_8.1.0.x86_64.xml | 1 +
.../domaincapsdata/qemu_8.2.0-q35.x86_64.xml | 1 +
.../domaincapsdata/qemu_8.2.0-tcg.x86_64.xml | 1 +
tests/domaincapsdata/qemu_8.2.0.x86_64.xml | 1 +
.../domaincapsdata/qemu_9.0.0-q35.x86_64.xml | 1 +
.../domaincapsdata/qemu_9.0.0-tcg.x86_64.xml | 1 +
tests/domaincapsdata/qemu_9.0.0.x86_64.xml | 1 +
.../domaincapsdata/qemu_9.1.0-q35.x86_64.xml | 1 +
.../domaincapsdata/qemu_9.1.0-tcg.x86_64.xml | 1 +
tests/domaincapsdata/qemu_9.1.0.x86_64.xml | 1 +
.../qemu_9.2.0-q35.x86_64+amdsev.xml | 1 +
.../domaincapsdata/qemu_9.2.0-q35.x86_64.xml | 1 +
.../qemu_9.2.0-tcg.x86_64+amdsev.xml | 1 +
.../domaincapsdata/qemu_9.2.0-tcg.x86_64.xml | 1 +
.../qemu_9.2.0.x86_64+amdsev.xml | 1 +
tests/domaincapsdata/qemu_9.2.0.x86_64.xml | 1 +
tests/domaincapsmock.c | 6 ++
47 files changed, 120 insertions(+), 4 deletions(-)
--
2.51.1