Re: [RFC PATCH 1/2] conf: Introduce 'absolute' clock offset

The 'absolute' clock offset type has a 'start' attribute which is an unix epoch timestamp to which the hardware clock is always set at start of the VM. This is useful if some VM needs to be kept set to an arbitrary time for e.g. testing or working around broken software. Signed-off-by: Peter Krempa <pkrempa(a)redhat.com&gt; --- docs/formatdomain.rst | 4 ++ src/conf/domain_conf.c | 13 +++++++ src/conf/domain_conf.h | 4 ++ src/conf/schemas/domaincommon.rng | 8 ++++ src/libxl/libxl_conf.c | 1 + tests/qemuxml2argvdata/clock-absolute.xml | 30 +++++++++++++++ .../clock-absolute.x86_64-latest.xml | 38 +++++++++++++++++++ tests/qemuxml2xmltest.c | 1 + 8 files changed, 99 insertions(+) create mode 100644 tests/qemuxml2argvdata/clock-absolute.xml create mode 100644 tests/qemuxml2xmloutdata/clock-absolute.x86_64-latest.xml diff --git a/docs/formatdomain.rst b/docs/formatdomain.rst index 9be305f3e6..5639a3014b 100644 --- a/docs/formatdomain.rst +++ b/docs/formatdomain.rst @@ -2170,6 +2170,10 @@ Windows, however, expects it to be in so called 'localtime'. the RTC adjustments are lost at each reboot. :since:`Since 0.7.7` :since:`Since 0.9.11` the ``basis`` attribute can be either 'utc' (default) or 'localtime'. + ``absolute`` + The guest clock will be always set to the value of the ``start`` + attribute. The ``start`` attribute takes the an epoch timestamp.

+ :since:`Since 8.4.0`. A ``clock`` may have zero or more ``timer`` sub-elements. :since:`Since 0.8.0`