[kata-dev] Dax enablement in 2.0

Hi all, One of the features currently available in 2.0.0 is dax support, in an internal discussion virtiofs Dax stability was mentioned as not mature enough yet. For example, some of the weakspots that were mentioned are: * Guest can crash when accessing a DAX page of a truncated file * The stability of the QEMU interface for the mapping is still not there IIUC it's currently enabled by default (qemu), can it be disabled? if not, is it planned to be configurable? Are there currently any upstream issues that can be linked to Dax's instability? Any other insights / thoughts would be highly appreciated. Thank you.